Over the years, field activities in the NGA have provided research opportunities and data to numerous graduate students. With several cruises a year, there is plenty of work to be done.
Here is a list of all theses and dissertations produced by students funded by our programs over the years.

Theses
5142352
R52AJLL5
MS
1
technische-universitat-wien
50
date
desc
1372
https://nga.lternet.edu/wp-content/plugins/zotpress/
%7B%22status%22%3A%22success%22%2C%22updateneeded%22%3Afalse%2C%22instance%22%3Afalse%2C%22meta%22%3A%7B%22request_last%22%3A0%2C%22request_next%22%3A0%2C%22used_cache%22%3Atrue%7D%2C%22data%22%3A%5B%7B%22key%22%3A%22IKJ5UV3M%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Norgaard%22%2C%22parsedDate%22%3A%222024-08%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ENorgaard%2C%20Addie%20%28%3Cb%3E2024%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Seasonal%20marine%20inorganic%20carbon%20dynamics%20on%20the%20Northern%20Gulf%20of%20Alaska%20continental%20shelf%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202024%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27http%3A%5C%2F%5C%2Fhdl.handle.net%5C%2F11122%5C%2F15526%27%3Ehttp%3A%5C%2F%5C%2Fhdl.handle.net%5C%2F11122%5C%2F15526%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Seasonal%20marine%20inorganic%20carbon%20dynamics%20on%20the%20Northern%20Gulf%20of%20Alaska%20continental%20shelf%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Addie%22%2C%22lastName%22%3A%22Norgaard%22%7D%5D%2C%22abstractNote%22%3A%22The%20Northern%20Gulf%20of%20Alaska%20supports%20many%20socioeconomic%20and%20ecosystem%20services%20but%20is%20subject%20to%20increasing%20ocean%20temperatures%2C%20marine%20heatwaves%2C%20and%20freshwater%20runoff%2C%20harmful%20algal%20blooms%2C%20and%20ocean%20acidification.%20In%20addition%2C%20large%20natural%20variability%20in%20biological%20and%20physical%20drivers%20complicates%20characterization%20of%20the%20progression%20of%20ocean%20acidification%20and%20variability%20in%20seawater%20inorganic%20carbon%20conditions.%20Here%2C%20we%20present%20two%20years%20%282019-2021%29%20of%20in%20situ%20moored%20upper-ocean%20partial%20pressure%20of%20carbon%20dioxide%20%28pCO2%29%20and%20pH%20data%20on%20the%20outer%20continental%20shelf%20of%20the%20Northern%20Gulf%20of%20Alaska.%20The%20observations%20show%20that%20subsurface%20pCO2%2C%20pH%20and%20aragonite%20mineral%20saturation%20state%20%28%5Cu03a9arag%29%20were%20highly%20seasonal%2C%20although%20generally%20remained%20at%20a%20moderate%20level%20with%20pH%20varying%20between%207.9%20and%208.2%2C%20and%20%5Cu03a9arag%20%3E%202%20throughout%20the%20year.%20The%20influence%20of%20biogeochemistry%2C%20either%20from%20in%20situ%20or%20vertical%20exchange%20changes%2C%20strongly%20drove%20pCO2%2C%20pH%20and%20%5Cu03a9arag%20anomaly%20variations%20throughout%20the%20year%2C%20while%20temperature%20also%20exerted%20a%20strong%20influence%20on%20pCO2%20and%20pH.%20The%20thermal%20and%20biogeochemical%20drivers%20generally%20compensated%20each%20other%2C%20lessening%20the%20amplitude%20of%20seasonal%20variations%3B%20exceptions%20generated%20the%20highest%20and%20lowest%20pH%20and%20pCO2%20conditions%20of%20the%20year.%20In%20spring%2C%20primary%20production%20and%20seasonally%20cold%20temperatures%20led%20to%20the%20highest%20pH%20and%20lowest%20pCO2%20of%20the%20year.%20The%20lowest%20pH%20and%20highest%20pCO2%20of%20the%20year%20occurred%20in%20fall%20as%20high-frequency%20events%20when%20subseasonal%20mixing%20events%20entrained%20deeper%2C%20CO2-enriched%20water%2C%20coincident%20with%20seasonally%20warm%20temperatures.%20Air-sea%20CO2%20flux%20calculations%20suggest%20a%20greater%20wintertime%20atmospheric%20CO2%20source%20than%20previously%20measured.%20This%20work%20complements%20other%20ongoing%20hydrographic%20and%20nearshore%20monitoring%2C%20modeling%2C%20and%20experimental%20work%20needed%20to%20understand%20the%20regional%20progression%20and%20impact%20of%20ocean%20acidification%20on%20this%20variable%20and%20changing%20ecosystem.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%22August%202024%22%2C%22language%22%3A%22%22%2C%22url%22%3A%22http%3A%5C%2F%5C%2Fhdl.handle.net%5C%2F11122%5C%2F15526%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222024-11-27T17%3A56%3A21Z%22%7D%7D%2C%7B%22key%22%3A%22GNWRQWVK%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Stidham%22%2C%22parsedDate%22%3A%222024-05%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EStidham%2C%20Emily%20%28%3Cb%3E2024%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Climate%20Influences%20Emerge%20Within%20Two%20Decades%20of%20Observations%20for%20Pelagic%20Tunicates%20and%20Pelagic%20Snails%20in%20the%20Northern%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202024%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F3051717292%3Faccountid%3D14470.%26sourcetype%3DDissertations%2520%26%2520Theses%27%3Ehttps%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F3051717292%3Faccountid%3D14470.%26sourcetype%3DDissertations%2520%26%2520Theses%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Climate%20Influences%20Emerge%20Within%20Two%20Decades%20of%20Observations%20for%20Pelagic%20Tunicates%20and%20Pelagic%20Snails%20in%20the%20Northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Emily%22%2C%22lastName%22%3A%22Stidham%22%7D%5D%2C%22abstractNote%22%3A%22Mucus-net%20feeders%20are%20under-appreciated%20organisms%20that%20can%20have%20large%20impacts%20on%20how%20organic%20matter%20moves%20through%20food%20webs.%20In%20the%20Northern%20Gulf%20of%20Alaska%20and%20Prince%20William%20Sound%20they%20are%20represented%20primarily%20by%20pelagic%20tunicates%20%28larvaceans%2C%20doliolids%2C%20salps%29%20and%20pelagic%20snails%20%28pteropods%29.%20Over%20a%2020-year%20time-series%20%282001-2021%29%20there%20was%20strong%20seasonality%20of%20larvacean%20abundance%20and%20species%20composition.%20Spring%20was%20dominated%20by%20Oikopleura%20labradoriensis%20and%20Fritillaria%20borealis%2C%20with%20higher%20diversity%20during%20autumn%2C%20due%20largely%20to%20the%20periodic%20presence%20of%20warm-water%20species.%20There%20was%20a%20distinct%20cross-shelf%20gradient%20with%20Oikopleura%20dioica%2C%20spreading%20across%20the%20lower%20salinity%20shelf%20during%20the%20autumn%2C%20and%20Fritillaria%20species%20becoming%20more%20prominent%20at%20offshore%20stations.%20Up%20to%2045%25%20of%20individual%20species%20and%2019%25%20to%2028%25%20of%20the%20tunicate%20community%20variation%20could%20be%20explained%20by%20physical%20variables%20%28Temperature%2C%20Salinity%2C%20Chlorophyll%20%5Cu03b1%29%20and%20climate%20indices%20%28ENSO%2C%20PDO%2C%20NPGO%29%20during%20the%20spring%20and%20autumn%2C%20respectively.%20There%20were%20pronounced%20shifts%20in%20species%20composition%20and%20abundance%20during%20marine%20heatwaves.%20Limacina%20helicina%20showed%20a%20negative%20relationship%20to%20climate%20indices%2C%20with%20strongest%20correlation%20to%20the%20North%20Pacific%20Gyre%20Oscillation%20during%20spring.%20These%20long-term%20species-level%20records%20in%20subarctic%20waters%20provide%20improved%20understanding%20of%20how%20the%20mucus-net%20feeding%20community%20may%20continue%20to%20shift%20in%20a%20changing%20ocean%20climate.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%22May%202024%22%2C%22language%22%3A%22English%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F3051717292%3Faccountid%3D14470.%26sourcetype%3DDissertations%2520%26%2520Theses%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222024-11-27T00%3A21%3A33Z%22%7D%7D%2C%7B%22key%22%3A%22QELJ8MGK%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Blais%22%2C%22parsedDate%22%3A%222024%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EBlais%2C%20Jaime%20%28%3Cb%3E2024%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Rhizaria%20marine%20protists%20are%20unexpectedly%20abundant%20and%20exhibit%20taxonomic%20and%20trophic%20diversity%20in%20the%20northern%20Gulf%20of%20Alaska%2C%20Anacortes%2C%20WA%2C%20Western%20Washington%20University%2C%202024%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1337%5C%2F%27%3Ehttps%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1337%5C%2F%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Rhizaria%20marine%20protists%20are%20unexpectedly%20abundant%20and%20exhibit%20taxonomic%20and%20trophic%20diversity%20in%20the%20northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Jaime%22%2C%22lastName%22%3A%22Blais%22%7D%5D%2C%22abstractNote%22%3A%22Rhizaria%20are%20a%20diverse%20supergroup%20of%20large%20marine%20protists%20that%20are%20often%20overlooked%20due%20to%20their%20lower%20abundances%20and%20wide%20size%20range%20relative%20to%20other%20plankton%2C%20and%20fragility.%20Despite%20their%20global%20distribution%2C%20the%20fundamentals%20of%20Rhizaria%20ecology%20are%20poorly%20understood%20due%20to%20an%20insufficient%20number%20of%20datasets%20and%20differing%20methodologies.%20Here%20we%20present%20the%20first%20characterization%20of%20Rhizaria%20ecology%20in%20the%20northern%20Gulf%20of%20Alaska%20%28NGA%29%2C%20a%20variable%20yet%20productive%20subarctic%20ecosystem%20with%20important%20fisheries%20that%20is%20experiencing%20long-term%20warming.%20This%20knowledge%20will%20provide%20a%20more%20complete%20picture%20of%20protist%20community%20composition%20and%20trophodynamics%20in%20the%20NGA%3B%20shifts%20to%20which%20may%20impact%20food%20web%20resiliency.%20These%20amoeboid%20organisms%20produce%20biomineralized%20skeletons%20and%20use%20sticky%20pseudopodia%20to%20capture%20prey%3B%20structures%20that%20allow%20Rhizaria%20to%20drive%20biogeochemical%20cycling%20and%20carbon%20export.%20Some%20mixotrophic%20taxa%20also%20maintain%20symbiotic%20algae.%20Seawater%20samples%20were%20collected%20from%20CTD-secured%20Niskin%20bottles%20at%20stations%20within%20the%20NGA%20Long-Term%20Ecological%20Research%20study%20area%20during%20summer%202023.%20We%20report%20some%20of%20the%20highest%20Rhizaria%20abundances%20%2825%20cells%20L-1%29%20from%20any%20ocean%20environment%20to%20date%20and%20thus%20suggest%20a%20restructuring%20of%20the%20current%20biogeographical%20paradigm%2C%20where%20abundances%20near%20the%20poles%20are%20similar%20to%20the%20equatorial%20region.%20Acantharia%20was%20the%20most%20ubiquitous%20subgroup.%20Distinct%20depth%20niches%20were%20also%20revealed%3B%20Foraminifera%20dominated%20surface%20waters%2C%20Radiolaria%20exhibited%20a%20cosmopolitan%20distribution%2C%20and%20Cercozoa%20were%20the%20deepest%20living.%20We%20highlight%20Rhizaria%20as%20key%20players%20in%20NGA%20food%20web%20dynamics%20as%20evidenced%20by%20their%20wide%20distributions%2C%20diversity%2C%20and%20unique%20nutrition%20strategies.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22Western%20Washington%20University%22%2C%22date%22%3A%22Fall%202024%22%2C%22language%22%3A%22English%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1337%5C%2F%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222025-01-16T01%3A28%3A30Z%22%7D%7D%2C%7B%22key%22%3A%22AS75NILZ%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22O%27Hara%22%2C%22parsedDate%22%3A%222023-01%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EO%26%23x2019%3BHara%2C%20Megan%20%28%3Cb%3E2023%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Distribution%20and%20Mixotrophy%20of%20Cryptophyte%20Phytoplankton%20in%20the%20Northern%20Gulf%20of%20Alaska%2C%20Bellingham%2C%20WA%2C%20Western%20Washington%20University%2C%202023%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1152%5C%2F%27%3Ehttps%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1152%5C%2F%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Distribution%20and%20Mixotrophy%20of%20Cryptophyte%20Phytoplankton%20in%20the%20Northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Megan%22%2C%22lastName%22%3A%22O%27Hara%22%7D%5D%2C%22abstractNote%22%3A%22The%20Northern%20Gulf%20of%20Alaska%20%28NGA%29%20is%20a%20productive%20subarctic%20marine%20ecosystem%20that%20supports%20high%20abundances%20of%20plankton%2C%20fishes%2C%20seabirds%2C%20and%20mammals.%20Research%20has%20shown%20that%20this%20high%20productivity%20is%20primarily%20controlled%20by%20seasonal%20and%20spatial%20heterogeneity%20in%20the%20lower%20trophic%20level%20food%20web.%20Marine%20cryptophytes%20are%20a%20crucial%2C%20yet%20understudied%2C%20phytoplankton%20group%20in%20the%20NGA.%20Cryptophytes%20have%20the%20capacity%20for%20mixotrophy%20%28acquiring%20energy%20through%20photosynthesis%20and%20feeding%29%20which%20can%20improve%20trophic%20transfer%20efficiency%2C%20increase%20cellular%20growth%20rates%2C%20and%20improve%20retention%20of%20nutrients%20in%20the%20water%20column.%20Field%20samples%20collected%20in%20spring%2C%20summer%2C%20and%20fall%202021%20surveyed%20the%20contribution%20of%20marine%20cryptophytes%20to%20the%20phytoplankton%20community%20in%20the%20NGA%20and%20assessed%20how%20natural%20variability%20in%20environmental%20factors%20influenced%20their%20distribution%20and%20mixotrophic%20capabilities.%20Our%20study%20demonstrated%20high%20spatial%20and%20temporal%20variability%20in%20cryptophyte%20biomass%20and%20community%20composition%20across%20the%20NGA.%20Cryptophytes%20were%20found%20in%20highest%20abundances%20in%20summer%20and%20fall%2C%20with%20smaller%20cells%20%283-%2010%20%5Cu03bcm%29%20dominating%20the%20cryptophyte%20community%20composition%20during%20the%20summer%20in%20nearshore%20waters%20and%20larger%20cells%20%2810-25%20%5Cu03bcm%29%20playing%20an%20important%20role%20offshore%20in%20the%20fall.%20This%20variability%2C%20along%20with%20a%20capacity%20to%20live%20in%20a%20wide%20range%20of%20environmental%20conditions%20in%20the%20NGA%2C%20suggests%20that%20cryptophytes%20are%20versatile%20protists.%20Analysis%20of%20small%20cell-dominated%20phytoplankton%20communities%20generated%20carbon%20biomass%20estimates%20up%20to%20600%20%5Cu03bcgC%5C%2FL%20and%20carbon%20to%20chlorophyll%20ratios%20up%20to%20300.%20These%20values%20were%20higher%20than%20previously%20expected%20for%20a%20small%20cell%20community%20in%20the%20NGA%20and%20indicated%20high%20carbon%20transfer%20potential%20from%20small%20cells%20despite%20low%20chlorophyll%20concentrations%20in%20some%20seasons.%20Cryptophytes%20and%20other%20nanoeukaryotes%20consistently%20made%20up%20~75%20%25%20of%20the%20total%20phytoplankton%20community%20biomass%20in%20summer%20and%20fall%20in%20the%20NGA.%20This%20research%20suggests%20that%20cryptophytes%20are%20a%20critical%20component%20of%20the%20lower%20trophic%20level%20food%20web%20in%20the%20NGA%20in%20summer%20and%20fall.%20Despite%20their%20diverse%20environmental%20range%20in%202021%2C%20time%20series%20analyses%20of%20four%20summers%20%282018-2021%29%20of%20cryptophyte%20data%20showed%20lower%20abundance%2C%20biomass%2C%20and%20average%20cell%20size%20during%202019%2C%20an%20anomalously%20warm%20year%20in%20the%20NGA.%20Finally%2C%20we%20found%20empirical%20evidence%20for%20in%20situ%20mixotrophy%20and%20the%20mechanisms%20that%20regulate%20cryptophyte%20mixotrophy%20in%20the%20NGA.%20Cryptophyte%20mixotrophy%20was%20highest%20in%20larger%20cells%20%28%3E%2010%20%5Cu03bcm%29%20in%20summer%20and%20fall%20and%20had%20a%20strong%20positive%20relationship%20with%20prey%20%28Synechococcus%20spp.%29%20concentration%2C%20a%20moderate%20positive%20relationship%20with%20phosphate%2C%20and%20a%20weak%20negative%20relationship%20with%20ammonium.%20Findings%20from%20this%20research%20improved%20our%20understanding%20of%20the%20basic%20biology%20and%20ecology%20of%20this%20important%20group%20of%20primary%20producers%20and%20will%20provide%20novel%20information%20to%20integrate%20estimates%20of%20cryptophyte%20biomass%20and%20mixotrophy%20into%20our%20ecosystem%20food%20web%20model.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22Western%20Washington%20University%22%2C%22date%22%3A%22January%202023%22%2C%22language%22%3A%22English%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1152%5C%2F%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222023-10-11T00%3A09%3A11Z%22%7D%7D%2C%7B%22key%22%3A%22AIPL3I26%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Cohen%22%2C%22parsedDate%22%3A%222022-12%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ECohen%2C%20Jacob%20%28%3Cb%3E2022%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Shifts%20in%20microbial%20community%20composition%20during%20the%202019%20Pacific%20marine%20heatwave%20in%20the%20northern%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202022%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2758132189%3Faccountid%3D14470.%26sourcetype%3DDissertations%2520%26%2520Theses%27%3Ehttps%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2758132189%3Faccountid%3D14470.%26sourcetype%3DDissertations%2520%26%2520Theses%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Shifts%20in%20microbial%20community%20composition%20during%20the%202019%20Pacific%20marine%20heatwave%20in%20the%20northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Jacob%22%2C%22lastName%22%3A%22Cohen%22%7D%5D%2C%22abstractNote%22%3A%22Climate%20change%20has%20led%20to%20a%20gradual%20increase%20of%20sea%20surface%20temperatures%20in%20the%20Northern%20Gulf%20of%20Alaska%20%28NGA%29%20interspersed%20with%20marine%20heatwaves%20%28MHW%29%20that%20impose%20a%20rapid%20but%20temporary%20perturbation%20of%20sea%20surface%20temperature.%20MHWs%20have%20the%20potential%20to%20alter%20marine%20microbial%20community%20structure%2C%20which%20may%20impact%20the%20production%20and%20transfer%20of%20carbon%20to%20higher%20trophic%20levels.%20The%20year%202019%20was%20characterized%20as%20an%20MHW%20in%20the%20North%20Pacific%2C%20with%20sea%20surface%20temperatures%20in%20the%20NGA%20reaching%20~2.5%20%5Cu00ba%20C%20above%20average%20during%202019%20and%20~1%20%5Cu00ba%20C%20above%20average%20during%202020%2C%20while%202021%20had%20near-average%20sea%20surface%20temperatures.%20To%20characterize%20shifts%20in%20the%20NGA%27s%20microbial%20community%2C%20samples%20for%20DNA%20and%20flow%20cytometry%20were%20collected%20on%20NGA%20Long%20Term%20Ecological%20Research%20cruises%20in%20summers%202018-2021.%20Flow%20cytometry%20sample%20analysis%20revealed%20higher%20abundances%20of%20picoeukaryotes%2C%20Synechococcus%2C%20and%20nanoeukaryotes%20in%20the%20summer%20of%202019%20relative%20to%202020%20and%202021%20on%20the%20continental%20shelf.%20The%20diversity%20of%20eukaryotic%20microbes%20was%20lower%20during%202018-19%20than%202020-2021%2C%20with%20similar%20patterns%20observed%20within%20the%20diversity%20of%20individual%20eukaryotic%20taxa.%20Conversely%2C%20the%20diversity%20of%20prokaryotic%20microbes%20was%20higher%20during%202019%20than%202020.%20Different%20environmental%20conditions%20were%20correlated%20with%20small%20cell%20abundance%20and%20microbial%20diversity.%20Elevated%20picoeukaryote%20abundance%20was%20associated%20with%20higher%20temperature%20and%20inversely%20correlated%20with%20chlorophyll%20a%20concentration%2C%20while%20Synechococcus%20abundance%20was%20anti-correlated%20with%20the%20concentration%20of%20nitrate%20and%20phosphate.%20Shannon%20diversity%20of%2018S%20reads%20correlated%20with%20lower%20salinity%20measurements%20while%20Shannon%20diversity%20of%2016S%20reads%20was%20not%20significantly%20correlated%20with%20any%20tested%20biological%20or%20environmental%20variables.%20These%20correlations%20indicate%20that%20increases%20in%20sea%20surface%20temperature%2C%20along%20with%20associated%20changes%20in%20nutrient%20concentrations%20and%20salinity%2C%20act%20as%20environmental%20drivers%20with%20the%20potential%20to%20shifts%20the%20NGA%27s%20microbial%20community%20structure.%20Such%20a%20community%20shift%20towards%20pico-nanophytoplankton%20may%20reduce%20trophic%20transfer%20efficiency%20and%20decrease%20the%20production%20of%20fisheries%20and%20other%20higher%20trophic%20levels%20in%20a%20warmer%20NGA.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%22December%202022%22%2C%22language%22%3A%22English%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2758132189%3Faccountid%3D14470.%26sourcetype%3DDissertations%2520%26%2520Theses%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222024-11-27T00%3A22%3A00Z%22%7D%7D%2C%7B%22key%22%3A%22E2XPFNLU%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Coleman%22%2C%22parsedDate%22%3A%222022-04-29%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EColeman%2C%20Delaney%20%28%3Cb%3E2022%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Lipid%20Accumulation%20in%20Three%20Species%20of%20Neocalanus%20Copepod%20in%20the%20Northern%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202022%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2652611004%5C%2Fabstract%5C%2F78CB680EE0134260PQ%5C%2F1%3Faccountid%3D14470%27%3Ehttps%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2652611004%5C%2Fabstract%5C%2F78CB680EE0134260PQ%5C%2F1%3Faccountid%3D14470%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Lipid%20Accumulation%20in%20Three%20Species%20of%20Neocalanus%20Copepod%20in%20the%20Northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Delaney%22%2C%22lastName%22%3A%22Coleman%22%7D%5D%2C%22abstractNote%22%3A%22The%20Northern%20Gulf%20of%20Alaska%20experiences%20pronounced%20seasonality%20and%20inter-annual%20variability%20characterized%20by%20a%20significant%20bloom%20of%20phytoplankton%20in%20the%20spring.%20Neocalanus%20copepods%20in%20the%20NGA%20have%20evolved%20to%20match%20their%20lifecycle%20to%20the%20seasonality%20of%20the%20Gulf%20of%20Alaska%20and%20feed%20upon%20the%20spring%20phytoplankton%20bloom.%20All%20three%20of%20these%20Neocalanus%20species%20utilize%20diapause%20as%20an%20over-wintering%20strategy%3B%20acquiring%20large%20stores%20of%20lipid%20to%20sustain%20them%20through%20winter%20hibernation%20and%20subsequent%20reproduction.%5Cn%5CnZooplankton%20were%20sampled%20with%20150%20and%20505%20%5Cu03bcm%20mesh%20nets%20from%200%20to%201200%20m%20along%20the%20Seward%20Line%20and%20within%20Prince%20William%20Sound%20in%20the%20Northern%20Gulf%20of%20Alaska%20during%202018-2020%20to%20track%20the%20physiological%20process%20of%20Neocalanus%20copepods%20preparing%20for%20diapause.%20We%20measured%20lipid%20sac%20area%2C%20lipid%20volume%20and%20percent%20lipid%20to%20quantify%20lipid%20content.%20Neocalanus%20showed%20significant%20interannual%20variability%20in%20final%20lipid%20accumulation%20both%20at%20depth%20and%20in%20the%20surface%20during%20the%20study%20period.%20For%20all%20three%20species%2C%20lipid%20content%20increased%20with%20increasing%20stage%20and%20prosome%20length.%20Lipid%20content%20increased%20from%20spring%20to%20summer%20for%20N.%20flemingeri%2C%20remaining%20steady%20into%20fall%20as%20animals%20molted%20into%20adults%20and%20descended%20to%20depth%20for%20diapause.%20Neocalanus%20plumcrhus%20stored%20lipid%20from%20spring%20to%20summer%20before%20descending%20slightly%20after%20N.%20flemingeri.%20Neocalanus%20cristatus%20exhibited%20dissimilar%20behavior%20to%20the%20other%20two%20species%2C%20storing%20consistently%20low%20amounts%20of%20lipid%2C%20alluding%20to%20a%20different%20lifecycle.%5Cn%5CnEach%20Neocalanus%20species%20displayed%20similar%20lipid%20accumulation%20behavior%20with%20offset%20timing%20from%20one%20another.%20Neocalanus%20exhibits%20an%20earlier%20developmental%20timing%20as%20compared%20to%20other%20lipid%20accumulating%20copepods%20giving%20them%20a%20competitive%20advantage%20to%20reach%20maturity%20in%20time%20to%20feed%20on%20the%20early%20phase%20of%20the%20spring%20phytoplankton%20bloom%20faster%20than%20other%20species.%20Our%20data%20provided%20some%20evidence%20for%20both%20the%20lipid%20accumulation%20hypothesis%20and%20the%20developmental%20program%20hypothesis%20being%20utilized%20in%20Neocalanus%20populations%20in%20the%20Northern%20Gulf%20of%20Alaska.%20This%20work%20serves%20as%20the%20first%20detailed%20study%20of%20body%20condition%20and%20lipid%20sac%20condition%20in%20Neocalanus%20populations%20throughout%20the%20water%20column%20within%20the%20Northern%20Gulf%20of%20Alaska.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222022-04-29%22%2C%22language%22%3A%22English%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2652611004%5C%2Fabstract%5C%2F78CB680EE0134260PQ%5C%2F1%3Faccountid%3D14470%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222022-06-10T21%3A53%3A56Z%22%7D%7D%2C%7B%22key%22%3A%22VQGBE59H%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Busse%22%2C%22parsedDate%22%3A%222021-01-01%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EBusse%2C%20Hana%20%28%3Cb%3E2021%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Mixotrophy%20by%20Phytoflagellates%20in%20the%20Northern%20Gulf%20of%20Alaska%3A%20Impacts%20of%20Physico-Chemical%20Characteristics%20and%20Prey%20Concentration%20on%20Feeding%20by%20Photosynthetic%20Nano-%20and%20Dinoflagellates%2C%20Bellingham%2C%20WA%2C%20Western%20Washington%20University%2C%202021%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1005%27%3Ehttps%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1005%3C%5C%2Fa%3E%2C%20Advisor%3A%20Suzanne%20Strom%3B%5CnCommittee%3A%20Kathryn%20Sobocinski%2C%20Shawn%20Arellano.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Mixotrophy%20by%20Phytoflagellates%20in%20the%20Northern%20Gulf%20of%20Alaska%3A%20Impacts%20of%20Physico-Chemical%20Characteristics%20and%20Prey%20Concentration%20on%20Feeding%20by%20Photosynthetic%20Nano-%20and%20Dinoflagellates%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Hana%22%2C%22lastName%22%3A%22Busse%22%7D%5D%2C%22abstractNote%22%3A%22Long%20term%20monitoring%20in%20the%20Northern%20Gulf%20of%20Alaska%20%28NGA%29%20has%20shown%20that%20the%20high%20productivity%20of%20the%20region%20is%20closely%20coupled%20to%20lower%20trophic%20level%20food%20web%20dynamics.%20From%20previous%20observations%20of%20the%20NGA%2C%20we%20know%20that%20many%20nano-%20and%20dinoflagellates%20that%20compose%20this%20food%20web%20are%20mixotrophic%2C%20and%20therefore%20capable%20of%20both%20phagotrophy%20and%20phototrophy%20in%20a%20single%20cell.%20This%20behavior%20is%20believed%20to%20stabilize%20food%20webs%20by%20providing%20multiple%20pathways%20to%20energy%20and%20nutrients%20and%20may%20play%20an%20important%20role%20in%20the%20NGA%2C%20where%20environmental%20conditions%20are%20harsh%20and%20highly%20variable.%20To%20better%20understand%20the%20role%20of%20mixotrophic%20phytoflagellates%20in%20this%20region%20and%20how%20environmental%20factors%20drive%20mixotrophic%20behavior%2C%20field%20experiments%20and%20environmental%20sampling%20were%20conducted%20in%20summer%20and%20fall%20of%202019.%5Cn%5CnFor%20the%20dinoflagellate%2C%20nanoflagellate%2C%20and%20cryptophyte%20communities%20there%20was%20a%20relationship%20between%20ingestion%20and%20environmental%20factors%2C%20with%20responses%20being%20specific%20to%20each%20taxonomic%20group.%20For%20the%20nanoflagellate%20community%2C%20a%20positive%20correlation%20between%20Synechococcus%20concentration%20and%20ingestion%20and%20a%20negative%20correlation%20between%20phosphate%20concentration%20and%20ingestion%20were%20observed.%20Alternatively%2C%20the%20dinoflagellate%20and%20cryptophyte%20communities%20responded%20to%20ambient%20light%2C%20where%20a%20negative%20correlation%20between%20ingestion%20and%20irradiance%20was%20observed.%20These%20differing%20responses%20indicate%20that%20phytoflagellates%20in%20the%20NGA%20are%20utilizing%20mixotrophy%20for%20both%20energy%20and%20nutrient%20acquisition%20and%20that%20differences%20are%20taxonomically%20specific.%20This%20initial%20study%20of%20small-celled%20mixotrophy%20highlights%20the%20prevalence%20and%20importance%20of%20this%20strategy%20in%20the%20NGA%20and%20indicates%20it%20may%20be%20a%20key%20contributor%20to%20overall%20ecosystem%20resilience%20and%20productivity.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22Western%20Washington%20University%22%2C%22date%22%3A%222021-01-01%22%2C%22language%22%3A%22en-US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F1005%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-08-16T22%3A13%3A17Z%22%7D%7D%2C%7B%22key%22%3A%22952ESMIJ%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Mendoza-Islas%22%2C%22parsedDate%22%3A%222020-11-04%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EMendoza-Islas%2C%20Heidi%20%28%3Cb%3E2020%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Abundance%2C%20composition%20and%20distribution%20of%20predatory%20gelatinous%20zooplankton%20in%20the%20Northern%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202020%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fsearch.proquest.com%5C%2Fdocview%5C%2F2447028430%27%3Ehttps%3A%5C%2F%5C%2Fsearch.proquest.com%5C%2Fdocview%5C%2F2447028430%3C%5C%2Fa%3E%2C%20Chair%3A%20Russell%20Hopcroft%3B%5CnCommittee%3A%20Kenneth%20O.%20Coyle%2C%20Kristen%20Cieciel%2C%20Seth%20Danielson.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Abundance%2C%20composition%20and%20distribution%20of%20predatory%20gelatinous%20zooplankton%20in%20the%20Northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Heidi%22%2C%22lastName%22%3A%22Mendoza-Islas%22%7D%5D%2C%22abstractNote%22%3A%22Jellyfish%20are%20conspicuous%20yet%20under-studied%20components%20of%20marine%20zooplankton%20communities.%20Abundance%2C%20biomass%2C%20size%2C%20and%20distribution%20of%20large-jellyfish%20were%20measured%20during%20July%20and%20September%20of%202018%20and%202019%20as%20part%20of%20the%20Northern%20Gulf%20of%20Alaska%20Long-Term%20Ecological%20Research%20%28NGA-LTER%29%20cruises.%20Nearly%201000%20kg%20dispersed%20among%20~13%2C800%20jellies%20were%20collected%20using%20a%205%20m2%20Methot%20net.%20Catches%20were%20dominated%20by%20two%20macro-jellies%2C%20the%20hydrozoan%20Aequorea%20sp.%20and%20the%20scyphozoan%20Chrysaora%20sp.%20During%202018%2C%20epipelagic%20macro-jellies%20biomass%20averaged%201.46%20%5Cu00b1%200.36%20g%20WW%20m-3%20for%20July%20and%201.14%20%5Cu00b1%200.23%20g%20WW%20m-3%20for%20September%2C%20while%20during%202019%20they%20averaged%200.86%20%5Cu00b1%200.19%20g%20WW%20m-3%20for%20July%20and%200.72%20%5Cu00b1%200.21%20g%20WW%20m-3%20by%20September.%20Despite%20similar%20biomass%20among%20sampling%20seasons%20within%20the%20same%20year%2C%20July%20abundances%20were%20fivefold%20greater%20than%20abundances%20in%20September%2C%20with%20July%20catches%20dominated%20by%20juvenile%20jellyfish%20over%20the%20inner%20shelf%2C%20while%20during%20September%20jellyfish%20adults%20were%20more%20prominent%20and%20most%20predominant%20at%20offshore%20stations.%20Comparison%20to%20over%2020%20years%20of%20data%20from%20standard%20towed%20nets%20allowed%20determination%20of%20the%20relative%20magnitude%20of%20the%20three%20dominant%20predatory%20zooplankton%20components%3A%20Scyphozoans%2C%20Hydrozoans%2C%20and%20Chaetognaths%20in%20the%20NGA.%20The%20biomass%20of%20these%20smaller%20epipelagic%20predators%20%2810%20mg%20WW%20m-3%20for%20hydrozoans%20and%208%20mg%20WW%20m-3%20for%20chaetognaths%29%20is%20a%20low%20percentage%20of%20the%20macro-jellies%2C%20despite%20their%20much%20higher%20numerical%20abundance.%20Acknowledging%20that%20changes%20in%20gelatinous%20biomass%20could%20have%20profound%20effects%20on%20fisheries%2C%20we%20argue%20that%20jellyfish%20should%20be%20quantitatively%20monitored%20in%20ecosystems%20with%20high%20fisheries%20productivity.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%2211%5C%2F4%5C%2F2020%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fsearch.proquest.com%5C%2Fdocview%5C%2F2447028430%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-08-16T22%3A13%3A13Z%22%7D%7D%2C%7B%22key%22%3A%22366UAJXN%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Monell%22%2C%22parsedDate%22%3A%222020-10-27%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EMonell%2C%20Kira%20Jean%20%28%3Cb%3E2020%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Characterization%20of%20Cell%20Division%20in%20the%20Tissues%20of%20the%20Calanoid%20Copepod%2C%20Neocalanus%20flemingeri%20from%20Diapause%20through%20Early%20Oogenesis%2C%20Manoa%2C%20HI%2C%20USA%2C%20University%20of%20Hawai%26%23x2019%3Bi%20at%20Manoa%2C%202020%2C%20abgerufen%20am%2023.07.2021%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27http%3A%5C%2F%5C%2Fscholarspace.manoa.hawaii.edu%5C%2Fhandle%5C%2F10125%5C%2F73356%27%3Ehttp%3A%5C%2F%5C%2Fscholarspace.manoa.hawaii.edu%5C%2Fhandle%5C%2F10125%5C%2F73356%3C%5C%2Fa%3E%2C%20Chair%3A%20Petra%20Lenz%3B%5CnCommittee%3A%20Erica%20Goetze%2C%20Megan%20Porter.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Characterization%20of%20Cell%20Division%20in%20the%20Tissues%20of%20the%20Calanoid%20Copepod%2C%20Neocalanus%20flemingeri%20from%20Diapause%20through%20Early%20Oogenesis%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Kira%20Jean%22%2C%22lastName%22%3A%22Monell%22%7D%5D%2C%22abstractNote%22%3A%22Unlike%20most%20calanoid%20copepods%2C%20females%20of%20the%20diapausing%20copepod%2C%20Neocalanus%20flemingeri%20%28Miller%2C%201988%29%20fuel%20oogenesis%20entirely%20through%20stored%20energy.%20Due%20to%20the%20reliance%20on%20stored%20energy%2C%20N.%20flemingeri%20females%20manage%20their%20internal%20lipid%20stores%20to%20maximize%20oocyte%20production%20which%20differs%20from%20the%20reproductive%20program%20of%20most%20calanoids%20that%20couple%20food%20availability%20with%20oogenesis.%20In%20this%20study%2C%20both%20lipid%20content%20and%20cell%20division%20within%20the%20reproductive%20structures%20in%20females%20were%20examined%20as%20diapause%20was%20terminated%20and%20oogenesis%20began.%20In%20June%20and%20September%202019%2C%20diapausing%20females%20were%20collected%20from%20depth%20in%20Prince%20William%20Sound%2C%20Alaska.%20Incubation%20experiments%20in%205-Ethynyl-2%5Cu00b4-deoxyuridine%20%28EdU%29%20were%20conducted%20to%20quantify%20and%20pinpoint%20the%20location%20of%20cell%20division%20within%20the%20body%20from%20diapause%20through%20early%20oogenesis.%20Imaging%20of%20EdU-treated%20females%20using%20confocal%20microscopy%20revealed%20evidence%20of%20cell%20division%20in%20the%20ovary%20within%2024%20hours%20after%20collection.%20Both%20oogonia%20and%20oocytes%20incorporated%20EdU%20based%20on%20the%20location%20of%20cells%20in%20the%20posterior%20end%20of%20the%20ovary.%20Dividing%20cells%20in%20the%20ovary%20peaked%20in%20number%20at%2072%20hours%2C%20remained%20high%20over%20two%20weeks%2C%20and%20decreased%20thereafter%20with%20no%20staining%20detected%20at%20four%20weeks%20after%20collection.%20Thus%2C%20the%20production%20of%20new%20oocytes%20stopped%20two%20to%20four%20weeks%20before%20females%20release%20their%20first%20clutch%20of%20eggs.%20The%20pattern%20of%20cell%20division%20in%20the%20ovary%20parallels%20the%20up-%20and%20down-regulation%20of%20early%20germline%20development%20genes%20reported%20in%20an%20earlier%20transcriptomics%20study.%20These%20results%20suggest%20that%20oogenesis%20is%20sequential%20in%20N.%20flemingeri%20which%20synchronizes%20egg%20maturation%2C%20unlike%20other%20calanoid%20copepods%20where%20most%20oocyte%20stages%20are%20observed%20concurrently%20within%20the%20ovary.%20The%20magnitude%20of%20cell%20division%20in%20the%20ovary%20of%20individual%20females%20were%20compared%20with%20their%20respective%20total%20lipid%20contents%20and%20prosome%20lengths.%20Numbers%20of%20dividing%20cells%20in%20the%20ovaries%20were%20positively%20correlated%20with%20both%20prosome%20length%20and%20lipid%20content%2C%20suggesting%20that%20total%20fecundity%20is%20higher%20in%20copepods%20with%20longer%20prosome%20lengths%20and%20more%20lipid.%20In%20this%20study%2C%20duration%20of%20the%20period%20of%20active%20cell%20division%20appeared%20to%20be%20similar%20in%20all%20females%20independent%20of%20prosome%20size%20or%20lipid%20content.%20Understanding%20the%20internal%20physiological%20process%20of%20reproduction%20in%20lipid-rich%20copepods%20like%20N.%20flemingeri%20is%20an%20important%20step%20in%20knowing%20how%20and%20to%20what%20magnitude%20egg%20production%20can%20be%20affected%20by%20climate%20change.%20This%20is%20the%20first%20study%20that%20tracked%20cell%20division%20in%20post-diapause%20N.%20flemingeri.%20This%20capital%20breeder%20meters%20its%20energy%20sources%20by%20varying%20the%20number%20of%20dividing%20cells%20and%20limiting%20cell%20division%20in%20the%20ovary%20to%20the%20first%20three%20to%20four%20weeks%20post-diapause.%20As%20waters%20continue%20to%20warm%2C%20predictions%20of%20shorter%20diapause%20lengths%2C%20and%20both%20smaller%20lipid%20reserves%20and%20prosome%20lengths%20have%20been%20hypothesized.%20Negative%20impacts%20on%20egg%20production%20in%20this%20species%20could%20lead%20to%20a%20decrease%20in%20population%20numbers%20and%20thus%20a%20decrease%20in%20a%20vital%20food%20source%20for%20many%20birds%20and%20fishes.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Hawai%27i%20at%20Manoa%22%2C%22date%22%3A%2210%5C%2F27%5C%2F2020%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22http%3A%5C%2F%5C%2Fscholarspace.manoa.hawaii.edu%5C%2Fhandle%5C%2F10125%5C%2F73356%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-08-16T22%3A13%3A09Z%22%7D%7D%2C%7B%22key%22%3A%226U6UD2MH%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Mazur%22%2C%22parsedDate%22%3A%222020-06%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EMazur%2C%20Clayton%20Moore%20%28%3Cb%3E2020%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Comparing%20the%20bioavailability%20of%20a%20natural%20and%20synthetic%20iron%20source%3A%20do%20past%20experiments%20accurately%20model%20phytoplankton%20response%20to%20episodic%20iron%20addition%3F%2C%20Bellingham%2C%20Washington%2C%20Western%20Washington%20University%2C%202020%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F966%5C%2F%27%3Ehttps%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F966%5C%2F%3C%5C%2Fa%3E%2C%20Chair%3A%20Dr.%20Suzanne%20Strom%3B%5CnCommittee%3A%20Brian%20L%20Bingham%2C%20M.%20Brady%20Michael%20Olson.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Comparing%20the%20bioavailability%20of%20a%20natural%20and%20synthetic%20iron%20source%3A%20do%20past%20experiments%20accurately%20model%20phytoplankton%20response%20to%20episodic%20iron%20addition%3F%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Clayton%20Moore%22%2C%22lastName%22%3A%22Mazur%22%7D%5D%2C%22abstractNote%22%3A%22Episodic%20iron%20input%20from%20natural%20sources%20%28e.g.%2C%20riverine%20input%2C%20dust%20deposition%2C%20and%20mesoscale%20eddies%29%20plays%20an%20important%20role%20in%20dictating%20phytoplankton%20growth%2C%20physiology%2C%20and%20community%20structure%20in%20the%20high-nitrate%20low-chlorophyll%20%28HNLC%29%20waters%20of%20the%20Northern%20Gulf%20of%20Alaska%20%28NGA%29.%20Iron%20addition%20experiments%20utilizing%20the%20synthetic%20iron%20source%2C%20FeCl3%2C%20have%20been%20performed%20in%20all%20major%20HNLC%20regions%20and%20have%20resulted%20in%20diatom%20blooms%20with%20significant%20implications%20for%20ecosystem%20productivity%20and%20resilience.%20If%20FeCl3%20and%20natural%20iron%20sources%20differ%20in%20bioavailability%2C%20and%20hence%20potential%20phytoplankton%20production%2C%20re-interpretation%20of%20these%20results%20is%20warranted.%20To%20test%20the%20hypothesis%20that%20natural%20and%20synthetic%20iron%20sources%20are%20differentially%20bioavailable%2C%20we%20performed%20a%20deck-board%20iron%20addition%20experiment%20in%20the%20summer%20of%202019.%20We%20exposed%20the%20NGA%20HNLC%20phytoplankton%20community%20to%20three%20iron%20sources%3A%20FeCl3%2C%20the%20Copper%20River%20plume%2C%20and%20an%20HNLC%20control%20and%20assessed%20net%20growth%2C%20photosynthetic%20efficiency%2C%20community%20composition%2C%20and%20nutrient%20use%20over%20a%205%20d%20incubation.%20Addition%20of%20the%20FeCl3%20and%20Copper%20River%20plume%20iron%20sources%20alleviated%20iron%20stress%20for%20the%20total%20phytoplankton%20community%2C%20yet%20the%20bioavailability%20of%20these%20two%20iron%20sources%20was%20size-dependent.%20Cells%20%3E%2020%20%5Cu00b5m%20responded%20differently%20to%20all%20three%20iron%20sources%2C%20with%20net%20growth%20rates%20and%20photosynthetic%20efficiency%20being%20highest%20in%20the%20FeCl3%20treatment%20and%20intermediate%20in%20the%20Copper%20River%20plume%20treatment.%20In%20contrast%20to%20cells%20%3E%2020%20%5Cu00b5m%2C%20phytoplankton%20%3C%2020%20%5Cu00b5m%20responded%20similarly%20to%20the%20Copper%20River%20plume%20and%20FeCl3%20treatments.%20Consistent%20with%20previous%20experiments%2C%20FeCl3%20addition%20promoted%20diatom%20growth.%20However%2C%20the%20Copper%20River%20plume%20iron%20source%20primarily%20increased%20the%20production%20and%20turnover%20of%20cells%20%3C%2020%20%5Cu00b5m.%20We%20conclude%20that%20diatom%20growth%20and%20physiology%20measured%20in%20previous%20iron%20addition%20experiments%20in%20response%20to%20FeCl3%20do%20not%20directly%20translate%20to%20fluvial%20iron%20sources.%20We%20also%20suggest%20that%20fluvial%20iron%20input%20is%20critical%20to%20maintaining%20ultraplankton%20in%20NGA%20HNLC%20waters%20and%20that%20it%20may%20aid%20the%20rapid%20transport%20of%20biomass%20into%20secondary%20production%20with%20the%20addition%20of%20more%20highly%20bioavailable%20iron%20sources.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22Western%20Washington%20University%22%2C%22date%22%3A%22June%202020%22%2C%22language%22%3A%22eng%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fcedar.wwu.edu%5C%2Fwwuet%5C%2F966%5C%2F%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-08-16T22%3A13%3A00Z%22%7D%7D%2C%7B%22key%22%3A%22AVI3YM2I%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Kandel%22%2C%22parsedDate%22%3A%222020%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EKandel%2C%20Anna%20R.%20Y.%20%28%3Cb%3E2020%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Spatial%20and%20Temporal%20Variability%20of%20Dissolved%20Aluminum%20and%20Manganese%20in%20Surface%20Waters%20of%20the%20Northern%20Gulf%20of%20Alaska%2C%20United%20States%20--%20Alaska%2C%20University%20of%20Alaska%20Fairbanks%2C%202020%2C%20abgerufen%20am%2023.07.2021%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2476549380%5C%2Fabstract%5C%2FCD792F466B734239PQ%5C%2F1%27%3Ehttps%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2476549380%5C%2Fabstract%5C%2FCD792F466B734239PQ%5C%2F1%3C%5C%2Fa%3E%2C%20Chair%3A%20Ana%20Aguilar-Islas%3B%5CnCommittee%3A%20Seth%20Danielson%2C%20Gwenn%20Hennon.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Spatial%20and%20Temporal%20Variability%20of%20Dissolved%20Aluminum%20and%20Manganese%20in%20Surface%20Waters%20of%20the%20Northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Anna%20R.%20Y.%22%2C%22lastName%22%3A%22Kandel%22%7D%5D%2C%22abstractNote%22%3A%22The%20Northern%20Gulf%20of%20Alaska%20%28NGA%29%20shelf%20is%20a%20productive%20high-latitude%20environment%20where%20nutrient%20dynamics%20are%20greatly%20impacted%20by%20the%20seasonal%20variability%20in%20freshwater%20input%20and%20water%20column%20mixing.%20Iron%20is%20a%20key%20nutrient%20on%20the%20NGA%20shelf%20that%20directly%20modulates%20primary%20production%2C%20but%20inputs%20are%20difficult%20to%20quantify%20due%20to%20high%20biological%20uptake%20and%20control%20exerted%20by%20Fe-binding%20organic%20ligands.%20Other%20lithogenic%20elements%20such%20as%20aluminum%20and%20manganese%20have%20the%20same%20sources%20as%20iron%20%28rivers%20and%20sediment%29%20and%20similar%20abiotic%20removal%20via%20particle%20scavenging%2C%20but%20exhibit%20quasi-conservative%20behavior%20in%20seawater%20allowing%20for%20their%20use%20as%20tracers%20of%20these%20sources.%20Thus%2C%20Al%20and%20Mn%20distributions%20can%20help%20provide%20insight%20into%20iron%20inputs%20and%20the%20relative%20importance%20of%20various%20mechanisms%20influencing%20nutrient%20dynamics%20in%20the%20NGA.%5CnThe%20data%20are%20derived%20from%20spring%2C%20summer%2C%20and%20fall%20NGA%20LTER%20%28long%20term%20ecological%20research%29%20cruises%20from%202018%20and%202019%20that%20included%20a%20focused%20five-day%20Copper%20River%20plume%20study%2C%20several%20surface%20transects%20from%20Kayak%20Island%20to%20Kodiak%20Island%2C%20and%20vertical%20profiles%20at%20several%20locations%20sparsely%20distributed%20throughout%20the%20shelf.%20We%20find%20that%20seasonal%20patterns%20in%20the%20surface%20concentrations%20of%20dMn%20and%20dAl%20mirrored%20annual%20glacial%20melt%20cycles%2C%20with%20the%20lowest%20values%20observed%20in%20spring%20and%20higher%20values%20in%20summer%20and%20fall.%20Spatial%20patterns%20were%20also%20apparent%20as%20both%20metals%20tended%20to%20be%20lower%20offshore%20than%20inshore%2C%20and%20were%20also%20lower%20overall%20%28by%201-2%20orders%20of%20magnitude%29%20on%20transects%20further%20from%20the%20outflow%20of%20the%20Copper%20River%2C%20a%20major%20source%20of%20freshwater%20to%20the%20NGA.%20Extremely%20high%20concentrations%20in%20the%20Copper%20River%20plume%20%28%5Cu22641395%20nM%20dAl%2C%20%5Cu2264128%20nM%20dMn%29%20and%20strong%20correlations%20with%20salinity%20%28p%20%3C%200.0001%29%20highlight%20their%20quasi-conservative%20nature%2C%20and%20their%20usefulness%20as%20tracers%20of%20freshwater%20input%2C%20which%20helps%20inform%20iron%20inputs%20from%20this%20source.%20Enhanced%20dAl%20and%20dMn%20concentrations%20within%20nepheloid%20layers%20in%20subsurface%20waters%20indicate%20regions%20where%20a%20sedimentary%20source%20of%20iron%20is%20likely%20to%20be%20important.%20Residence%20times%20for%20dAl%20and%20dMn%20in%20surface%20waters%20over%20the%20NGA%20shelf%20were%20estimated%20to%20be%2031%20days%20%28dAl%29%20and%2042%20days%20%28dMn%29%20on%20average%20based%20on%20summer%20and%20fall%20data%20from%20both%20years.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222020%22%2C%22language%22%3A%22English%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdocview%5C%2F2476549380%5C%2Fabstract%5C%2FCD792F466B734239PQ%5C%2F1%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-08-16T22%3A12%3A55Z%22%7D%7D%2C%7B%22key%22%3A%22CQJD37N4%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Pretty%22%2C%22parsedDate%22%3A%222019-05%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EPretty%2C%20Jessica%20L.%20%28%3Cb%3E2019%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Particles%20in%20the%20Pacific%3A%20how%20productivity%20and%20zooplankton%20relate%20to%20particles%20in%20the%20deep%20sea%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202019%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F10529%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F10529%3C%5C%2Fa%3E%2C%20Chair%3A%20Andrew%20McDonnell%3B%5CnCommittee%3A%20Mark%20Johnson%2C%20Russell%20Hopcroft.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Particles%20in%20the%20Pacific%3A%20how%20productivity%20and%20zooplankton%20relate%20to%20particles%20in%20the%20deep%20sea%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Jessica%20L.%22%2C%22lastName%22%3A%22Pretty%22%7D%5D%2C%22abstractNote%22%3A%22The%20magnitude%20and%20spatio-temporal%20patterns%20of%20particulate%20material%20flux%20from%20the%20surface%20ocean%20through%20mesopelagic%20and%20bathypelagic%20depths%20determines%20sequestration%20of%20atmospheric%20carbon%20and%20the%20food%20supplied%20to%20deep-dwelling%20ocean%20life.%20The%20factors%20that%20influence%20how%20and%20where%20this%20organic%20material%20is%20exported%20from%20euphotic%20depths%20are%20poorly%20understood.%20Zooplankton%20are%20thought%20to%20play%20a%20key%20role%20in%20modulating%20the%20transport%20of%20surface-produced%20particles%20to%20depths%20through%20consumption%2C%20fragmentation%2C%20active%20diel%20vertical%20migration%2C%20and%20fecal%20pellet%20production%2C%20thus%20it%20is%20important%20to%20study%20both%20particulate%20matter%20and%20zooplankton%20in%20tandem.%20In%20this%20study%2C%20I%20use%20an%20in-situ%20optical%20instrument%2C%20the%20Underwater%20Video%20Profiler%205%20%28UVP5%29%2C%20to%20describe%20broad%20scale%20patterns%20of%20large%20%28%3E%20100%20%5Cu03bcm%29%20particles%20and%20zooplankton%20across%20a%20longitudinal%20transect%20of%20the%20Pacific%20Ocean%20during%20April%20to%20June%202015.%20Satellite-derived%20surface%20chlorophyll-a%20was%20employed%20to%20describe%20the%20timescales%20over%20which%20particles%20arrive%20in%20meso-%20and%20bathypelagic%20depths%20after%20a%20productivity%20peak.%20High%20abundances%20and%20volumes%20of%20particles%20are%20noticeable%20beyond%20the%20euphotic%20zone%20across%20the%20Equator%2C%20transition%20zone%2C%20and%20the%20sub-arctic%20Pacific%2C%20indicating%20increased%20export%20in%20these%20high-nutrient%20low-chlorophyll%20%28HNLC%29%20areas.%20In%20two%20of%20these%20areas%2C%20the%20Equator%20and%20transition%20zone%2C%20large%20abundances%20and%20volumes%20of%20particles%20extend%20into%20bathypelagic%20depths.%20High%20abundances%20of%20zooplankton%20were%20seen%20in%20all%20areas%20where%20high%20abundances%20of%20particles%20are%20seen%20in%20bathypelagic%20waters.%20Rhizaria%20were%20revealed%20to%20be%20pervasive%20across%20all%20biogeographic%20regions%2C%20and%20appear%20to%20play%20a%20role%20in%20particle%20attenuation%20in%20the%20sub-arctic%20Pacific.%20The%20insight%20into%20patterns%20between%20particles%2C%20zooplankton%2C%20and%20productivity%20identify%20HNLC%20regions%20as%20deserving%20more%20detailed%20examination%20in%20future%20studies%20of%20biological%20pump%20efficiency.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222019-05%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F10529%22%2C%22collections%22%3A%5B%2224DHDSQ3%22%2C%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-08-16T22%3A12%3A49Z%22%7D%7D%2C%7B%22key%22%3A%22RGF8BD9L%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Turner%22%2C%22parsedDate%22%3A%222015-12%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ETurner%2C%20Jessica%20S.%20%28%3Cb%3E2015%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Investigating%20marine%20particle%20distributions%20and%20processes%20using%20in%20situ%20optical%20imaging%20in%20the%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202015%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F6406%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F6406%3C%5C%2Fa%3E%2C%20Chair%3A%20Andrew%20McDonnell%3B%5CnCommittee%3A%20Mark%20Johnson%2C%26%23xA0%3B%20Ana%20Aguilar-Islas.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Investigating%20marine%20particle%20distributions%20and%20processes%20using%20in%20situ%20optical%20imaging%20in%20the%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Jessica%20S.%22%2C%22lastName%22%3A%22Turner%22%7D%5D%2C%22abstractNote%22%3A%22The%20Gulf%20of%20Alaska%20is%20a%20seasonally%20productive%20ecosystem%20surrounded%20by%20glaciated%20coastal%20mountains%20with%20high%20precipitation.%20With%20a%20combination%20of%20high%20biological%20production%2C%20inputs%20of%20suspended%20sediments%20from%20glacial%20runoff%2C%20and%20contrasting%20nutrient%20regimes%20in%20offshore%20and%20shelf%20environments%2C%20there%20is%20a%20great%20need%20to%20study%20particle%20cycling%20in%20this%20region.%20I%20measured%20the%20concentrations%20and%20size%20distributions%20of%20large%20marine%20particles%20%280.06-27%20mm%29%20during%20four%20cruises%20in%202014%20and%202015%20using%20the%20Underwater%20Vision%20Profiler%20%28UVP%29.%20The%20UVP%20produces%20high%20resolution%20depth%20profiles%20of%20particle%20concentrations%20and%20size%20distributions%20throughout%20the%20water%20column%2C%20while%20generating%20individual%20images%20of%20objects%20%3E500%20%5Cu03bcm%20including%20marine%20snow%20particles%20and%20mesozooplankton.%20The%20objectives%20of%20this%20study%20were%20to%201%29%20describe%20spatial%20variability%20in%20particle%20concentrations%20and%20size%20distributions%2C%20and%202%29%20use%20that%20variability%20to%20identify%20driving%20processes.%20I%20hypothesized%20that%20UVP%20particle%20concentrations%20and%20size%20distributions%20would%20follow%20patterns%20in%20chlorophyll%20a%20concentrations.%20Results%20did%20not%20support%20this%20hypothesis.%20Instead%2C%20a%20major%20contrast%20between%20shelf%20and%20offshore%20particle%20concentrations%20and%20sizes%20was%20observed.%20Total%20concentrations%20of%20particles%20increased%20with%20proximity%20to%20glacial%20and%20fluvial%20inputs.%20Over%20the%20shelf%2C%20particle%20concentrations%20on%20the%20order%20of%201000-10%2C000%5C%2FL%20were%201-2%20orders%20of%20magnitude%20greater%20than%20offshore%20concentrations%20on%20the%20order%20of%20100%5C%2FL.%20Driving%20processes%20over%20the%20shelf%20included%20terrigenous%20inputs%20from%20land%2C%20resuspension%20of%20bottom%20sediments%2C%20and%20advective%20transport%20of%20those%20inputs%20along%20and%20across%20the%20shelf.%20Offshore%2C%20biological%20processes%20were%20drivers%20of%20spatial%20variability%20in%20particle%20concentration%20and%20size.%20High%20quantities%20of%20terrigenous%20sediments%20could%20have%20implications%20for%20enhanced%20particle%20flux%20due%20to%20ballasting%20effects%20and%20for%20offshore%20transport%20of%20particulate%20phase%20iron%20to%20the%20central%20iron-limited%20gyre.%20The%20dominance%20of%20resuspended%20material%20in%20shelf%20processes%20will%20inform%20the%20location%20of%20future%20studies%20of%20the%20biological%20pump%20in%20the%20coastal%20Gulf%20of%20Alaska.%20This%20work%20highlights%20the%20importance%20of%20continental%20margins%20in%20global%20biogeochemical%20processes.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222015-12%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F6406%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A42Z%22%7D%7D%2C%7B%22key%22%3A%225Z7RDUGE%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Kelly%22%2C%22parsedDate%22%3A%222015-05%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EKelly%2C%20James%20Bruce%20%28%3Cb%3E2015%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20An%20examination%20of%20hydrography%20and%20sea%20level%20variability%20in%20the%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202015%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5746%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5746%3C%5C%2Fa%3E%2C%20Chair%3A%20Thomas%20Weingartner%3B%5CnCommittee%3A%20Harper%20Simmons%2C%20Zygmunt%20Kowalik.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22An%20examination%20of%20hydrography%20and%20sea%20level%20variability%20in%20the%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22James%20Bruce%22%2C%22lastName%22%3A%22Kelly%22%7D%5D%2C%22abstractNote%22%3A%22This%20thesis%20summarizes%20a%20detailed%20analysis%20of%20Seward%20sea%20level%20%28SSL%29%20in%20the%20Gulf%20of%20Alaska%20%28GOA%29%20and%20hydrography%20at%20oceanographic%20station%20GAK1%20along%20the%20oceanographic%20monitoring%20line%20outside%20of%20Resurrection%20Bay%2C%20Alaska.%20SSL%20variability%20was%20examined%20with%20respect%20to%20forcing%20by%20tides%2C%20sea%20level%20pressure%20%28SLP%29%2C%20wind%2C%20the%20steric%20contribution%20due%20to%20water%20column%20variations%20in%20temperature%20and%20salinity%2C%20and%20several%20climatic%20indices.%20In%20addition%2C%20multi-decadal%20trends%20in%20sea%20level%20and%20hydrography%20were%20also%20examined.%20The%20period%20of%20analysis%20spans%201970%20-2010.%20Tidal%20motion%20%28periods%20%3C%201day%29%2C%20account%20for%20~97%25%20of%20the%20total%20sea%20level%20%28SL%29%20variance%20while%20SLP%20variations%2C%20induced%20by%20the%20inverted%20barometer%20effect%2C%20account%20for%20~2%25%20of%20the%20total%20variance.%20After%20removing%20these%20influences%2C%20along-shore%20wind%20stress%20and%20sea%20level%20are%20highly%20coherent%20for%20the%202%20-%2060%20day%20subtidal%20period%20range%20and%20account%20for%20~40%20-%2050%25%20of%20the%20SSL%20variance%20over%20these%20timescales.%20The%20steric%20contribution%2C%20based%20on%20the%20geopotential%20height%20referenced%20to%20200%20m%20%28GH200%29%2C%20is%20also%20coherent%20with%20SSL%2C%20but%20it%20only%20accounts%20for%20~10%25%20of%20the%20SSL%20variance%20at%20these%20timescales.%20The%20along-shore%20wind%20stress-SSL%20coherence%20varies%20seasonally%20and%20is%20greatest%20in%20winter%20when%20winds%20are%20strongest%20and%20smaller%20in%20summer%20when%20wind%20variability%20is%20reduced.%20The%20annual%20cycle%20in%20SSL%20is%20coherent%20and%20in-phase%20with%20GH200.%20The%20latter%20is%20primarily%20controlled%20by%20the%20annual%20cycle%20in%20GOA%20coastal%20freshwater%20discharge%20and%20its%20effect%20on%20coastal%20salinities.%20SSL%20variations%20are%20also%20significantly%20correlated%20with%20the%20Pacific%20Decadal%20Oscillation%20%28PDO%29%20and%20the%20Southern%20Oscillation%20Index%20%28SOI%29.%20Over%20the%2040-year%20record%20examined%20here%20SSL%20shows%20a%20decreasing%20trend%20due%20to%20continental%20rebound.%20There%20are%20also%20statistically%20significant%20linear%20long-term%20trends%20in%20temperature%20and%20salinity%20as%20measured%20at%20GAK1.%20These%20trends%20indicate%20that%20the%20upper%20100%20m%20is%20warming%20at%20~0.20%20oC%20decade-1%20and%20at%200.15%20oC%20decade-1%20between%20100%20-%20200%20m.%20Surface%20salinities%20are%20decreasing%20at%200.15%20decade-1%2C%20while%20salinities%20between%20100%20and%20200%20m%20are%20increasing%20by%200.025%20decade-1.%20The%20surface%20salinity%20trends%20are%20consistent%20with%20an%20increase%20in%20coastal%20freshwater%20discharge%20due%20to%20increased%20glacial%20ablation%20and%20increased%20precipitation.%20In%20aggregate%2C%20these%20trends%20indicate%20that%20the%20GOA%20shelf%20has%20become%20more%20stratified%20over%20the%20past%2040%20years.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222015-05%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5746%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A46Z%22%7D%7D%2C%7B%22key%22%3A%22QJTJ6PJE%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Doubleday%22%2C%22parsedDate%22%3A%222013-12%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EDoubleday%2C%20Ayla%20%28%3Cb%3E2013%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Seasonal%20and%20interannual%20patterns%20of%20larvaceans%20and%20pteropods%20in%20the%20coastal%20Gulf%20of%20Alaska%2C%20and%20their%20relationship%20to%20pink%20salmon%20survival%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202013%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F4451%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F4451%3C%5C%2Fa%3E%2C%20Chair%3A%20Russell%20Hopcroft%3B%5CnCommittee%3A%20Rolf%20Gradinger%2C%20Kenneth%20O.%20Coyle.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Seasonal%20and%20interannual%20patterns%20of%20larvaceans%20and%20pteropods%20in%20the%20coastal%20Gulf%20of%20Alaska%2C%20and%20their%20relationship%20to%20pink%20salmon%20survival%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Ayla%22%2C%22lastName%22%3A%22Doubleday%22%7D%5D%2C%22abstractNote%22%3A%22Larvacean%20%28%3Dappendicularians%29%20and%20pteropod%20%28Limacina%20helicina%29%20composition%20and%20abundance%20were%20studied%20with%20physical%20variables%20each%20May%20and%20late%20summer%20across%2011%20years%20%282001%20to%202011%29%2C%20along%20one%20transect%20that%20crosses%20the%20continental%20shelf%20of%20the%20subarctic%20Gulf%20of%20Alaska%20and%20five%20stations%20within%20Prince%20William%20Sound%20%28PWS%29.%20Collection%20with%2053-%5Cu00b5m%20plankton%20nets%20allowed%20the%20identification%20of%20larvaceans%20to%20species%3A%20five%20occurred%20in%20the%20study%20area.%20Temperature%20was%20the%20driving%20variable%20in%20determining%20larvacean%20community%20composition%2C%20yielding%20pronounced%20differences%20between%20spring%20and%20late%20summer%2C%20while%20individual%20species%20were%20also%20affected%20differentially%20by%20salinity%20and%20chlorophyll-a%20concentration.%20During%20the%20spring%20Oikopleura%20labradoriensis%20and%20Fritillaria%20borealis%20were%20most%20abundant%20and%20present%20at%20all%20stations.%20Late%20summer%20had%20highest%20abundances%20of%20O.%20dioica%20at%20nearshore%20stations%2C%20while%20F.%20borealis%20dominated%20numerically%20at%20outer%20stations.%20The%2053-%5Cu00b5m%20plankton%20nets%20collected%20higher%20abundances%20of%20Oikopleura%20spp.%2C%20Fritillaria%20spp.%2C%20and%20L.%20helicina%20than%20coarser%20150%20and%20505-%5Cu00b5m%20plankton%20nets.%20Limacina%20helicina%20abundance%20had%20a%20significant%20interaction%20effect%20among%20years%2C%20seasons%20and%20station%20location.%20Limacina%20helicina%20abundance%20in%20nearby%20PWS%20explained%2030%25%20of%20the%20variability%20in%20pink%20salmon%20survival%3B%20however%2C%20no%20significant%20correlations%20existed%20with%20larvacean%20or%20L.%20helicina%20abundances%20from%20the%20Gulf%20of%20Alaska%20stations.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222013-12%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F4451%22%2C%22collections%22%3A%5B%2224DHDSQ3%22%2C%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A53Z%22%7D%7D%2C%7B%22key%22%3A%22ZALYMNVR%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Shake%22%2C%22parsedDate%22%3A%222011-12%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EShake%2C%20Kristen%20L%20%28%3Cb%3E2011%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Hydrographic%20controls%20and%20seasonal%20variability%20on%20the%20carbonate%20system%20in%20the%20northern%20Gulf%20of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202011%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27http%3A%5C%2F%5C%2Fwww.worldcat.org%5C%2Foclc%5C%2F773929057%27%3Ehttp%3A%5C%2F%5C%2Fwww.worldcat.org%5C%2Foclc%5C%2F773929057%3C%5C%2Fa%3E%2C%20Chair%3A%20Jeremy%20T%20Mathis.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Hydrographic%20controls%20and%20seasonal%20variability%20on%20the%20carbonate%20system%20in%20the%20northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Kristen%20L%22%2C%22lastName%22%3A%22Shake%22%7D%5D%2C%22abstractNote%22%3A%22The%20Northern%20Gulf%20of%20Alaska%20%28GOA%29%20supports%20a%20dynamic%20and%20economically%20viable%20marine%20ecosystem.%20One%20notable%20potential%20stressor%20to%20this%20ecosystem%20is%20ocean%20acidification%20%28OA%29%2C%20a%20byproduct%20of%20the%20increased%20uptake%20of%20anthropogenic%20carbon%20dioxide%20%28CO%5Cu2082%29%20by%20the%20ocean.%20Measurements%20of%20dissolved%20inorganic%20carbon%20%28DIC%29%20and%20total%20alkalinity%20%28TA%29%20were%20made%20along%20the%20continental%20shelf%20of%20the%20northern%20GOA%20and%20in%20Prince%20William%20Sound%20%28PWS%29%20and%20used%20to%20calculate%20seawater%20pH%20and%20the%20saturation%20state%20of%20aragonite%20Warp%29.%20Observations%20showed%20a%20high%20degree%20of%20seasonal%20variability%20in%20DIC%20concentrations%20in%20surface%20and%20bottom%20waters.%20TA%20was%20depleted%20relative%20to%20DIC%20due%20to%20the%20influence%20of%20glacial%20run%20off.%20Seasonally%20high%20rates%20of%20primary%20production%20lowered%20DIC%20concentrations%20causing%20an%20increase%20in%20pH%20and%20%5Bomega%5Darg%20in%20the%20mixed%20layer.%20However%2C%20DIC%20concentrations%20increased%20in%20the%20bottom%20waters%20due%20to%20the%20remineralization%20of%20exported%20organic%20matter%20and%20the%20intrusion%20of%20high%20salinity%20water%20from%20offshore%20waters%2C%20which%20suppressed%20pH%20and%20caused%20%5Bomega%5Darg%20to%20become%20undersaturated.%20Observations%20of%20GOA%20in%202009%20showed%20a%20general%20seasonal%20cycle%20of%20the%20carbon%20parameters%2C%20while%20a%20regional%20downwelling%20anomaly%20observed%20during%20transects%20in%202008%20captured%20the%20effect%20physical%20variability%20has%20on%20the%20carbonate%20system%20in%20this%20region.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222011-12%22%2C%22language%22%3A%22en-US%22%2C%22url%22%3A%22http%3A%5C%2F%5C%2Fwww.worldcat.org%5C%2Foclc%5C%2F773929057%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A32Z%22%7D%7D%2C%7B%22key%22%3A%22TYY87F2R%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Slater%22%2C%22parsedDate%22%3A%222004-08%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ESlater%2C%20Laura%20Michelle%20%28%3Cb%3E2004%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Development%2C%20growth%2C%20and%20egg%20production%20of%20Centropages%20abdominalis%20and%20Neocalanus%20flemingeri%20from%20the%20eastern%20subarctic%20Pacific%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202004%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F4984%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F4984%3C%5C%2Fa%3E%2C%20Chair%3A%20Kenneth%20O.%20Coyle.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Development%2C%20growth%2C%20and%20egg%20production%20of%20Centropages%20abdominalis%20and%20Neocalanus%20flemingeri%20from%20the%20eastern%20subarctic%20Pacific%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Laura%20Michelle%22%2C%22lastName%22%3A%22Slater%22%7D%5D%2C%22abstractNote%22%3A%22Copepods%20dominate%20oceanic%20mesozooplankton%20in%20terms%20of%20abundance%20and%20biomass%20thus%20contributing%20a%20significant%20source%20of%20secondary%20production.%20I%20determined%20development%2C%20growth%2C%20and%20egg%20production%20of%20Centropages%20abdominalis%20and%20Neocalanus%20flemingeri%20at%20temperatures%20representative%20of%20the%20northern%20Gulf%20of%20Alaska%20in%20spring.%20Median%20development%20times%20from%20eggs%20to%20adults%20were%2042%20and%2059%20days%20for%20C.%20abdominalis%20at%205%20and%207%5Cu00b0C%2C%20respectively%2C%20and%20117%20days%20from%20eggs%20to%20copepodite%20stage%20five%20for%20N.%20flemingeri%20at%205%5Cu00b0C.%20Average%20copepodite%20growth%20rates%20were%200.08%20and%200.17%20d%5Cu207b%5Cu00b9%20for%20C.%20abdominalis%20at%205%20and%207%5Cu00b0C%2C%20respectively%2C%20and%200.15%20d%5Cu207b%5Cu00b9%20for%20N.%20flemingeri%20at%205%5Cu00b0C.%20In%20situ%20egg%20production%20of%20C.%20abdominalis%20was%2037%20%5Cu00b1%2022%20eggs%20female%5Cu207b%5Cu00b9%20d%5Cu207b%5Cu00b9%20%28mean%20%5Cu00b1%20S.D.%29%2C%20corresponding%20to%20a%20growth%20rate%20of%200.14%20d%5Cu207b%5Cu00b9.%20Lifetime%20fecundity%20of%20N.%20flemingeri%20determined%20at%205%5Cu00b0C%20was%20535%20%5Cu00b1%20258%20eggs%20female%5Cu207b%5Cu00b9%20%28mean%20%5Cu00b1%20S.D.%29.%20Comparing%20these%20results%20to%20in%20situ%20populations%20reveals%20that%20C.%20abdominalis%20may%20be%20food%20limited%20during%20the%20summer%20and%20fall%2C%20while%20N.%20flemingeri%20is%20likely%20not%20food%20limited%20in%20late%20spring.%20Overall%2C%20this%20information%20helps%20clarify%20the%20life%20history%20patterns%20of%20these%20two%20species%20and%20allows%20production%20to%20be%20estimated%20and%20models%20of%20secondary%20production%20created%20for%20conditions%20within%20the%20Gulf%20of%20Alaska.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222004-08%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F4984%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A10%3A51Z%22%7D%7D%2C%7B%22key%22%3A%222HBD38GW%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Fredrickson%22%2C%22parsedDate%22%3A%222004%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EFredrickson%2C%20Kerri%20A.%20%28Kerri%20Ann%29%20%28%3Cb%3E2004%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20The%20role%20of%20dimethylsulfoniopropionate%20%28DMSP%29%20as%20a%20microzooplankton%20grazing%20deterrent%20in%20northern%20Puget%20Sound%20and%20the%20coastal%20Gulf%20of%20Alaska%2C%20Bellingham%2C%20WA%2C%20Western%20Washington%20University.%2C%202004%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fonesearch.library.wwu.edu%5C%2Fpermalink%5C%2Ff%5C%2F1jlslm9%5C%2FCP71178977730001451%27%3Ehttps%3A%5C%2F%5C%2Fonesearch.library.wwu.edu%5C%2Fpermalink%5C%2Ff%5C%2F1jlslm9%5C%2FCP71178977730001451%3C%5C%2Fa%3E%2C%20Chair%3A%20Suzanne%20Strom.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22The%20role%20of%20dimethylsulfoniopropionate%20%28DMSP%29%20as%20a%20microzooplankton%20grazing%20deterrent%20in%20northern%20Puget%20Sound%20and%20the%20coastal%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Kerri%20A.%20%28Kerri%20Ann%29%22%2C%22lastName%22%3A%22Fredrickson%22%7D%5D%2C%22abstractNote%22%3A%22%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22Western%20Washington%20University.%22%2C%22date%22%3A%222004%22%2C%22language%22%3A%22%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fonesearch.library.wwu.edu%5C%2Fpermalink%5C%2Ff%5C%2F1jlslm9%5C%2FCP71178977730001451%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A10%3A31Z%22%7D%7D%2C%7B%22key%22%3A%22UQB8IJ4T%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Childers%22%2C%22parsedDate%22%3A%222001-08%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EChilders%2C%20Amy%20Ruehs%20%28%3Cb%3E2001%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Major%20nutrient%20distribution%20in%20relation%20to%20the%20physical%20structure%20of%20the%20Gulf%20of%20Alaska%20shelf%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202001%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5213%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5213%3C%5C%2Fa%3E%2C%20Chair%3A%20Dean%20Stockwell%3B%26%23xA0%3B%20Committee%3A%20Thomas%20Weingartner%2C%20Terry%20Whitledge.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Major%20nutrient%20distribution%20in%20relation%20to%20the%20physical%20structure%20of%20the%20Gulf%20of%20Alaska%20shelf%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Amy%20Ruehs%22%2C%22lastName%22%3A%22Childers%22%7D%5D%2C%22abstractNote%22%3A%22The%20northern%20Gulf%20of%20Alaska%20is%20a%20biologically%20productive%20downwelling%20shelf.%20Nutrient%20sources%20supporting%20such%20productivity%20have%20not%20been%20adequately%20studied.%20Thirteen%20primary%20stations%20were%20occupied%20twelve%20times%20throughout%201998%20and%201999%20in%20an%20attempt%20to%20clarify%20nutrient%20distributions%20and%20sources.%20The%20shelf%20waters%20were%20warmer%2C%20fresher%2C%20lower%20in%20nitrate%2C%20and%20higher%20in%20phytoplankton%20biomass%20in%20the%20spring%20of%201998%20compared%20to%201999.%20Nitrate%2C%20silicate%2C%20and%20phosphate%20were%20positively%20correlated%20with%20salinity%20indicating%20an%20offshore%20nutrient%20source.%20The%20largest%20rates%20of%20new%20production%2C%20estimated%20from%20nitrate%20drawdown%20in%20the%20upper%20layer%20between%20March%20and%20July%5C%2FAugust%2C%20were%202.6%20mmole%20nitrate%20m%5Cu207b%5Cu00b2%20day%5Cu207b%5Cu00b9%20in%201998%20and%201.9%20mmole%20nitrate%20m%5Cu207b%5Cu00b2%20day%5Cu207b%5Cu00b9%20in%201999.%20There%20was%20evidence%20of%20a%20summer%20onshore%20flux%20of%20dense%2C%20nutrient-rich%20bottom%20water%20when%20the%20downwelling%20regime%20relaxed%20or%20reversed.%20This%20seasonal%20flux%20was%2020%25%20less%20than%20the%20estimated%20nitrate%20flux%20through%20nearby%20Hinchinbrook%20Canyon.%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222001-08%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5213%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A03Z%22%7D%7D%2C%7B%22key%22%3A%22LK95NPJK%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Pinchuk%22%2C%22parsedDate%22%3A%221997-08%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EPinchuk%2C%20Alexei%20I.%20%28%3Cb%3E1997%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Early%20life%20history%20of%20Metridia%20pacifica%20brodsky%20%28Copepoda%3A%20Calanoida%29%20from%20the%20southeastern%20Bering%20Sea%20and%20Gulf%20of%20Alaska%2C%20University%20of%20Alaska%20Fairbanks%2C%201997%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5039%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5039%3C%5C%2Fa%3E%2C%20Chair%3A%20Russell%20Hopcroft.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Early%20life%20history%20of%20Metridia%20pacifica%20brodsky%20%28Copepoda%3A%20Calanoida%29%20from%20the%20southeastern%20Bering%20Sea%20and%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Alexei%20I.%22%2C%22lastName%22%3A%22Pinchuk%22%7D%5D%2C%22abstractNote%22%3A%22Thesis%20%28M.S.%29%20University%20of%20Alaska%20Fairbanks%2C%201997%22%2C%22thesisType%22%3A%22MS%20Thesis%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%221997-08%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5039%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A20%3A32Z%22%7D%7D%5D%7D
Norgaard, Addie (2024): Seasonal marine inorganic carbon dynamics on the Northern Gulf of Alaska continental shelf, Fairbanks, AK, University of Alaska Fairbanks, 2024, http://hdl.handle.net/11122/15526.
Stidham, Emily (2024): Climate Influences Emerge Within Two Decades of Observations for Pelagic Tunicates and Pelagic Snails in the Northern Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2024, https://www.proquest.com/docview/3051717292?accountid=14470.&sourcetype=Dissertations%20&%20Theses.
Blais, Jaime (2024): Rhizaria marine protists are unexpectedly abundant and exhibit taxonomic and trophic diversity in the northern Gulf of Alaska, Anacortes, WA, Western Washington University, 2024, https://cedar.wwu.edu/wwuet/1337/.
O’Hara, Megan (2023): Distribution and Mixotrophy of Cryptophyte Phytoplankton in the Northern Gulf of Alaska, Bellingham, WA, Western Washington University, 2023, https://cedar.wwu.edu/wwuet/1152/.
Cohen, Jacob (2022): Shifts in microbial community composition during the 2019 Pacific marine heatwave in the northern Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2022, https://www.proquest.com/docview/2758132189?accountid=14470.&sourcetype=Dissertations%20&%20Theses.
Coleman, Delaney (2022): Lipid Accumulation in Three Species of Neocalanus Copepod in the Northern Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2022, https://www.proquest.com/docview/2652611004/abstract/78CB680EE0134260PQ/1?accountid=14470.
Busse, Hana (2021): Mixotrophy by Phytoflagellates in the Northern Gulf of Alaska: Impacts of Physico-Chemical Characteristics and Prey Concentration on Feeding by Photosynthetic Nano- and Dinoflagellates, Bellingham, WA, Western Washington University, 2021, https://cedar.wwu.edu/wwuet/1005, Advisor: Suzanne Strom;
Committee: Kathryn Sobocinski, Shawn Arellano.
Mendoza-Islas, Heidi (2020): Abundance, composition and distribution of predatory gelatinous zooplankton in the Northern Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2020, https://search.proquest.com/docview/2447028430, Chair: Russell Hopcroft;
Committee: Kenneth O. Coyle, Kristen Cieciel, Seth Danielson.
Monell, Kira Jean (2020): Characterization of Cell Division in the Tissues of the Calanoid Copepod, Neocalanus flemingeri from Diapause through Early Oogenesis, Manoa, HI, USA, University of Hawai’i at Manoa, 2020, abgerufen am 23.07.2021, http://scholarspace.manoa.hawaii.edu/handle/10125/73356, Chair: Petra Lenz;
Committee: Erica Goetze, Megan Porter.
Mazur, Clayton Moore (2020): Comparing the bioavailability of a natural and synthetic iron source: do past experiments accurately model phytoplankton response to episodic iron addition?, Bellingham, Washington, Western Washington University, 2020, https://cedar.wwu.edu/wwuet/966/, Chair: Dr. Suzanne Strom;
Committee: Brian L Bingham, M. Brady Michael Olson.
Kandel, Anna R. Y. (2020): Spatial and Temporal Variability of Dissolved Aluminum and Manganese in Surface Waters of the Northern Gulf of Alaska, United States -- Alaska, University of Alaska Fairbanks, 2020, abgerufen am 23.07.2021, https://www.proquest.com/docview/2476549380/abstract/CD792F466B734239PQ/1, Chair: Ana Aguilar-Islas;
Committee: Seth Danielson, Gwenn Hennon.
Pretty, Jessica L. (2019): Particles in the Pacific: how productivity and zooplankton relate to particles in the deep sea, Fairbanks, AK, University of Alaska Fairbanks, 2019, https://scholarworks.alaska.edu/handle/11122/10529, Chair: Andrew McDonnell;
Committee: Mark Johnson, Russell Hopcroft.
Turner, Jessica S. (2015): Investigating marine particle distributions and processes using in situ optical imaging in the Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2015, https://scholarworks.alaska.edu/handle/11122/6406, Chair: Andrew McDonnell;
Committee: Mark Johnson, Ana Aguilar-Islas.
Kelly, James Bruce (2015): An examination of hydrography and sea level variability in the Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2015, https://scholarworks.alaska.edu/handle/11122/5746, Chair: Thomas Weingartner;
Committee: Harper Simmons, Zygmunt Kowalik.
Doubleday, Ayla (2013): Seasonal and interannual patterns of larvaceans and pteropods in the coastal Gulf of Alaska, and their relationship to pink salmon survival, Fairbanks, AK, University of Alaska Fairbanks, 2013, https://scholarworks.alaska.edu/handle/11122/4451, Chair: Russell Hopcroft;
Committee: Rolf Gradinger, Kenneth O. Coyle.
Shake, Kristen L (2011): Hydrographic controls and seasonal variability on the carbonate system in the northern Gulf of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2011, http://www.worldcat.org/oclc/773929057, Chair: Jeremy T Mathis.
Slater, Laura Michelle (2004): Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific, Fairbanks, AK, University of Alaska Fairbanks, 2004, https://scholarworks.alaska.edu/handle/11122/4984, Chair: Kenneth O. Coyle.
Fredrickson, Kerri A. (Kerri Ann) (2004): The role of dimethylsulfoniopropionate (DMSP) as a microzooplankton grazing deterrent in northern Puget Sound and the coastal Gulf of Alaska, Bellingham, WA, Western Washington University., 2004, https://onesearch.library.wwu.edu/permalink/f/1jlslm9/CP71178977730001451, Chair: Suzanne Strom.
Childers, Amy Ruehs (2001): Major nutrient distribution in relation to the physical structure of the Gulf of Alaska shelf, Fairbanks, AK, University of Alaska Fairbanks, 2001, https://scholarworks.alaska.edu/handle/11122/5213, Chair: Dean Stockwell; Committee: Thomas Weingartner, Terry Whitledge.
Pinchuk, Alexei I. (1997): Early life history of Metridia pacifica brodsky (Copepoda: Calanoida) from the southeastern Bering Sea and Gulf of Alaska, University of Alaska Fairbanks, 1997, https://scholarworks.alaska.edu/handle/11122/5039, Chair: Russell Hopcroft.
Dissertations
5142352
R52AJLL5
PhD
1
technische-universitat-wien
50
date
desc
1372
https://nga.lternet.edu/wp-content/plugins/zotpress/
%7B%22status%22%3A%22success%22%2C%22updateneeded%22%3Afalse%2C%22instance%22%3Afalse%2C%22meta%22%3A%7B%22request_last%22%3A0%2C%22request_next%22%3A0%2C%22used_cache%22%3Atrue%7D%2C%22data%22%3A%5B%7B%22key%22%3A%22UELCQNHV%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22O%27Daly%22%2C%22parsedDate%22%3A%222024-08%22%2C%22numChildren%22%3A0%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EO%26%23x2019%3BDaly%2C%20Stephanie%20Hicks%20%28%3Cb%3E2024%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Transformations%20and%20Deep%20Intrusions%20of%20Particles%20and%20Plankton%20in%20the%20Global%20Oceans%3A%20Which%20Particles%20Sink%20Deeper%20and%20Why%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202024%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdissertations-theses%5C%2Ftransformations-deep-intrusions-particles%5C%2Fdocview%5C%2F3094176930%5C%2Fse-2%3Faccountid%3D14470%27%3Ehttps%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdissertations-theses%5C%2Ftransformations-deep-intrusions-particles%5C%2Fdocview%5C%2F3094176930%5C%2Fse-2%3Faccountid%3D14470%3C%5C%2Fa%3E.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Transformations%20and%20Deep%20Intrusions%20of%20Particles%20and%20Plankton%20in%20the%20Global%20Oceans%3A%20Which%20Particles%20Sink%20Deeper%20and%20Why%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Stephanie%20Hicks%22%2C%22lastName%22%3A%22O%27Daly%22%7D%5D%2C%22abstractNote%22%3A%22Sinking%20marine%20particles%20transport%20carbon%20from%20the%20ocean%5Cu2019s%20surface%20to%20the%20deep%20ocean%2C%20thereby%20contributing%20to%20atmospheric%20carbon%20dioxide%20modulation%20and%20benthic%20food%20supply.%20Many%20studies%20have%20shown%20that%20particle%20size%20is%20not%20a%20good%20predictor%20of%20particle%20sinking%20speed%20or%20behavior.%20Thus%2C%20the%20overarching%20question%20of%20this%20dissertation%3A%20why%20do%20certain%20particles%20sink%20faster%20or%20deeper%20than%20others%2C%20and%20is%20there%20a%20way%20to%20predict%20what%20depth%20a%20particle%20will%20reach%20in%20the%20ocean%3F%20Multiple%20facets%20of%20the%20ocean%5Cu2019s%20biological%20carbon%20pump%20are%20investigated%20using%20a%20combination%20of%20sediment%20traps%2C%20in%20situ%20particle%20imaging%2C%20and%20machine%20learning%20technology.%20In%20the%20Gulf%20of%20Alaska%2C%20we%20find%20aggregates%20contributed%2061%25%20to%20total%20carbon%20flux%2C%20suggesting%20that%20aggregation%20processes%2C%20not%20zooplankton%20repackaging%2C%20played%20a%20dominant%20role%20in%20carbon%20export.%20The%20role%20of%20the%20physical%20environment%20on%20the%20biological%20carbon%20pump%20was%20investigated%20in%20the%20Southern%20Ocean.%20Fluffy%20aggregates%20and%20grazers%20were%20most%20common%20at%20the%20surface%20during%20a%20phytoplankton%20bloom%2C%20whereas%201-3%20months%20after%20a%20bloom%2C%20grazers%20are%20in%20the%20mesopelagic%20and%20feces%20and%20dense%20aggregates%20are%20in%20high%20abundance%20in%20the%20bathypelagic.%20These%20results%20shed%20light%20on%20how%20frontal%20structures%20in%20the%20Southern%20Ocean%20influence%20patterns%20of%20particle%20export%20and%20remineralization%20in%20the%20mesopelagic%20with%20implications%20for%20how%20this%20influences%20global%20biogeochemical%20cycles.%20Finally%2C%20the%20effect%20of%20biogeochemical%20province%20and%20carbonate%20saturation%20state%20was%20investigated%20in%20the%20tropical%20and%20subtropical%20North%20Atlantic%20and%20Pacific.%20We%20find%20that%20plankton%20distribution%20and%20marine%20particle%20morphology%20in%20the%20Atlantic%20Ocean%20are%20more%20strongly%20impacted%20by%20aragonite%20and%20calcite%20saturation%20state%2C%20despite%20much%20shallower%20saturation%20horizons%20in%20the%20Pacific.%20This%20research%20can%20help%20better%20predict%20how%20the%20strength%20of%20carbon%20storage%20in%20the%20ocean%20may%20change%20with%20climate%20change%2C%20which%20is%20critical%20for%20climate%20modelers%20to%20predict%20the%20effects%20of%20climate%20change%20more%20accurately.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%22August%202024%22%2C%22language%22%3A%22%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fwww.proquest.com%5C%2Fdissertations-theses%5C%2Ftransformations-deep-intrusions-particles%5C%2Fdocview%5C%2F3094176930%5C%2Fse-2%3Faccountid%3D14470%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222024-11-27T18%3A32%3A25Z%22%7D%7D%2C%7B%22key%22%3A%22MUUAUB6R%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22De%20Sousa%22%2C%22parsedDate%22%3A%222011%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EDe%20Sousa%2C%20Leandra%20%28%3Cb%3E2011%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Seabird%20Habitat%20Use%20And%20Zooplankton%20Abundance%20And%20Biomass%20In%20Relation%20To%20Water%20Mass%20Properties%20In%20The%20Northern%20Gulf%20Of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202011%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F9077%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F9077%3C%5C%2Fa%3E%2C%20Chairs%3A%20Kenneth%20O.%20Coyle%2C%26%23xA0%3B%20Thomas%20Weingartner%3B%5CnCommittee%3A%20Ronald%20Barry%2C%20Alan%20Springer%2C%20George%20Hunt%20Jr.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Seabird%20Habitat%20Use%20And%20Zooplankton%20Abundance%20And%20Biomass%20In%20Relation%20To%20Water%20Mass%20Properties%20In%20The%20Northern%20Gulf%20Of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Leandra%22%2C%22lastName%22%3A%22De%20Sousa%22%7D%5D%2C%22abstractNote%22%3A%22Understanding%20of%20biological%20and%20physical%20mechanisms%20that%20control%20the%20Gulf%20of%20Alaska%20%28GOA%29%20ecosystem%20is%20of%20major%20importance%20to%20predicting%20the%20responses%20of%20bird%20and%20zooplankton%20communities%20to%20environmental%20changes%20in%20this%20region.%20I%20investigated%20seasonal%20%28March-October%29%20changes%20in%20seabird%20abundance%20in%20relation%20to%20changes%20in%20zooplankton%20biomass%20and%20water%20mass%20properties%20from%201998%20to%202003.%20Oceanodroma%20furcata%20and%20Fratercula%20cirrhata%20were%20most%20abundant%20during%20the%20peak%20of%20the%20zooplankton%20production%20season%20%28May-August%29.%20Overall%20abundance%20of%20seabirds%20did%20not%20follow%20seasonal%20changes%20in%20zooplankton%20biomass.%20Seabird%20abundance%20was%20low%20in%20the%20study%20area%20when%20compared%20to%20other%20regions%20in%20the%20GOA.%20Furthermore%2C%20low%20bird%20densities%20suggest%20that%20productivity%20in%20this%20study%20area%20is%20not%20high%20enough%20to%20sustain%20a%20significant%20seasonal%20increase%20in%20local%20seabird%20abundance.%20%20%20%20I%20further%20investigated%20the%20distribution%20and%20abundance%20of%20seabird%20foraging%20guilds%20across%20the%20neritic%20and%20oceanic%20domains%20in%20relation%20to%20water%20mass%20properties%20and%20zooplankton%20biomass%20during%20March%20and%20April.%20Overall%20zooplankton%20biomass%20increased%20from%20the%20inner%20shelf%20to%20the%20oceanic%20domain.%20Highest%20density%20of%20subsurface-foraging%20seabirds%20occurred%20in%20the%20middle%20shelf%20and%20surface-feeding%20seabirds%20were%20most%20abundant%20in%20the%20middle%20shelf%20and%20oceanic%20domain.%20Murre%20%28Uria%20spp.%29%20abundance%20was%20positively%20correlated%20with%20the%20biomass%20of%20Thysanoessa%20inermis%2C%20and%20Northern%20Fulmars%20%28Fulmarus%20glacialis%29%20were%20associated%20with%20cephalopod%20paralarvae%20and%20Eucalanus%20bungii.%20Elevated%20biomass%20of%20Thysanoessa%20inermis%20in%20March%20and%20April%20may%20be%20an%20important%20factor%20influencing%20habitat%20choice%20of%20wintering%20murres%20in%20this%20region.%20%20%20Lastly%2C%20I%20investigated%20the%20inter-annual%20variation%20in%20the%20abundance%20of%20sixteen%20zooplankton%20taxa%20in%20relation%20to%20water%20mass%20properties%20during%20May%20from%201998%20to%202009.%20Significant%20variations%20in%20temperature%2C%20salinity%20and%20zooplankton%20abundance%20were%20identified.%20Thysanoessa%20inermis%20and%20%20Calanus%20marshallae%20had%20increased%20abundances%20in%20years%20when%20there%20was%20a%20strong%20phytoplankton%20spring%20bloom%20preceded%20by%20anomalously%20cold%20winters.%20However%2C%20abundances%20of%20Pseudocalanus%20spp.%2C%20Neocalanus%20plumchrus%5C%2FNeocalanus%20flemingeri%2C%20Euphausia%20pacifica%20and%20Oithona%20spp.%20were%20not%20strongly%20affected%20by%20relatively%20higher%20mean%20water%20temperatures.%20The%20abundance%20of%20zooplankton%20in%20the%20northern%20GOA%20was%20highly%20influenced%20by%20advective%20processes.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222011%22%2C%22language%22%3A%22en-US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F9077%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A37Z%22%7D%7D%2C%7B%22key%22%3A%22E3K4DQQ3%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Janout%22%2C%22parsedDate%22%3A%222009%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EJanout%2C%20Markus%20A.%20%28%3Cb%3E2009%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Heat%20And%20Freshwater%20Controlling%20Processes%20On%20The%20Northern%20Gulf%20Of%20Alaska%20Shelf%2C%202009%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F9010%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F9010%3C%5C%2Fa%3E%2C%20Chair%3A%20Thomas%20Weingartner%3B%5CnCommittee%3A%20Kenneth%20O.%20Coyle%2C%20Katherine%20Hedstrom%2C%20Mark%20Johnson%2C%20Stephen%20Okkonen.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Heat%20And%20Freshwater%20Controlling%20Processes%20On%20The%20Northern%20Gulf%20Of%20Alaska%20Shelf%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Markus%20A.%22%2C%22lastName%22%3A%22Janout%22%7D%5D%2C%22abstractNote%22%3A%22We%20examined%20conditions%20and%20processes%20that%20control%20the%20distribution%20of%20heat%20and%20freshwater%20on%20the%20northern%20Gulf%20of%20Alaska%20%28GOA%29%20shelf.%20Cross-shelf%20heat%20gradients%20are%20weak%20throughout%20the%20year%2C%20while%20salinity%20gradients%20are%20substantial%20due%20to%20the%20impact%20of%20coastal%20freshwater%20runoff.%20Outer%20shelf%20water%20properties%20are%20influenced%20by%20large%20anticyclonic%20eddies%2C%20while%20the%20inner%20and%20middle%20shelves%20may%20be%20regulated%20by%20wind%20and%20freshwater%20runoff%20dynamics%20around%20the%20Alaska%20Coastal%20Current%20%28ACC%29.%20%20%20%20On%20the%20outer%20shelf%2C%20anticyclonic%20eddies%20propagate%20from%20the%20eastern%20GOA%20southwestward%20along%20the%20continental%20slope%2C%20where%20they%20favor%20on-shelf%20%28off-shelf%29%20transport%20of%20saline%20and%20nutrient-rich%20%28fresh%20and%20iron-rich%29%20waters%20Certain%20along-shelf%20locations%20are%20identified%20where%20low-salinity%20coastal%20waters%20are%20found%20near%20the%20shelfbreak%20within%20reach%20of%20eddies%20and%20may%20be%20regions%20of%20enhanced%20cross-shelf%20freshwater%20transport.%20The%20eddies%20have%20lifetimes%20of%20~5%20years%20and%20increase%20in%20size%20and%20sea%20level%20anomaly%20west%20of%20the%20Seward%20Line%2C%20which%20implies%20more%20vigorous%20eddy%20cross-shelf%20exchange%20in%20the%20northwestern%20GOA.%20%20%20%20By%20comparison%2C%20on%20the%20inner%20shelf%20the%20heat%20and%20freshwater%20distribution%20is%20dominated%20by%20large%20coastal%20river%20runoff%2C%20which%20forces%20the%20ACC%20and%20controls%20the%20vertical%20distribution%20of%20temperatures%20through%20stratification.%20In%20May%202007%2C%20the%20coastal%20GOA%20revealed%20some%20of%20the%20lowest%20ocean%20temperatures%20since%20the%20early%201970s%2C%20initiated%20by%20strong%20atmospheric%20cooling%20and%20reduced%20coastal%20runoff%20in%20November%202006.%20Stepwise%20regression%20shows%20that%2081%25%20of%20the%20variability%20of%20deep%20temperatures%20is%20explained%20by%20salinity%20stratification%20and%20air-sea%20heat%20fluxes.%20Weak%20baroclinic%20flow%20in%20May%202007%20likely%20aided%20the%20cooling%20through%20reduced%20along-shore%20heat%20transport.%20%20%20%20A%20more%20detailed%20examination%20of%20heat%20transport%20indicated%20that%20along-shore%20heat%20flux%20convergence%20in%20the%20ACC%20may%20re-supply%2010-35%25%20of%20the%20heat%20removed%20by%20air-sea%20fluxes%20throughout%20the%20coastal%20GOA%20cooling%20season%2C%20while%20the%20annual%20mean%20cross-shore%20heat%20flux%20convergence%20is%20insignificant.%20Spatial%20gradients%20show%20increasing%20heat%20fluxes%20from%20off-%20to%20on-shore%20and%20from%20east%20to%20west.%20The%20cross-shore%20gradients%20result%20from%20wind%20speed%20gradients%20due%20to%20ageostrophic%20near-shore%20wind%20jets%20near%20coastal%20mountains%2C%20while%20the%20along-shore%20gradients%20result%20from%20larger-scale%20pressure%20systems.%20While%20the%20ACC%20advects%20coastal%20freshwater%20around%20the%20GOA%20shelf%20its%20waters%20are%20subjected%20to%20disproportional%20heat%20loss%20west%20of%20the%20Seward%20Line.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22%22%2C%22date%22%3A%222009%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F9010%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A24Z%22%7D%7D%2C%7B%22key%22%3A%22BEHRX4T9%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Schroeder%22%2C%22parsedDate%22%3A%222007%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ESchroeder%2C%20Isaac%20%28%3Cb%3E2007%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Annual%20and%20interannual%20variability%20in%20the%20wind%20field%20and%20the%20hydrography%20along%20the%20Seward%20Line%20in%20the%20northern%20Gulf%20of%20Alaska%2C%20Norfolk%2C%20VA%2C%20Old%20Dominion%20University%2C%202007%2C%20abgerufen%20am%2025.03.2021%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fdigitalcommons.odu.edu%5C%2Foeas_etds%5C%2F81%5C%2F%27%3Ehttps%3A%5C%2F%5C%2Fdigitalcommons.odu.edu%5C%2Foeas_etds%5C%2F81%5C%2F%3C%5C%2Fa%3E%2C%20DOI%3A%2010.25777%5C%2F91VW-RQ18%2C%20Chair%3A%20Thomas%20C.%20Royer%3B%5CnCommittee%3A%20Chester%20Grosch%2C%20Nicholas%20Bond%2C%20Larry%20P.%20Atkinson.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Annual%20and%20interannual%20variability%20in%20the%20wind%20field%20and%20the%20hydrography%20along%20the%20Seward%20Line%20in%20the%20northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Isaac%22%2C%22lastName%22%3A%22Schroeder%22%7D%5D%2C%22abstractNote%22%3A%22The%20Northeast%20Pacific%20GLOBEC%20%28GLOBal%20ocean%20Ecosystems%20dynamics%29%20program%20%28October%201997%20to%20December%202004%29%20collected%20hydrographic%20data%20along%20the%20Seward%20Line%20that%20stretches%20from%20the%20inner%20shelf%20%28GAM%2059.8%5Cu00b0N%2C%20149.5%5Cu00b0W%29%20and%20extends%20over%20200%20km%20beyond%20the%20continental%20slope%20%28GAK13%2058.1%5Cu00b0N%2C%20147.8%5Cu00b0W%29.%20The%20complexity%20of%20the%20interannual%20hydrographic%20variability%20in%20this%20area%20stems%20from%20the%20interacting%20influences%20of%20local%20forcing%20such%20as%20winds%2C%20coastal%20freshwater%20discharge%2C%20eddies%2C%20fronts%20and%20remote%20forcing%20like%20El%20Ni%5Cu00f1o-Southern%20Oscillation.%20Until%20now%2C%20the%20influence%20of%20winds%20on%20the%20system%20has%20been%20calculated%20using%20coarse%20resolution%20upwelling%20index%20data%20or%20spatially%20sparse%20buoy%20data.%20The%20coarse%20resolution%20wind%20measurements%20cannot%20describe%20the%20cross%20shelf%20spatial%20variations%20of%20the%20winds%20which%20are%20expected%20to%20be%20significant%20due%20to%20the%20influence%20of%20the%20high%20coastal%20mountain%20chain%20on%20atmospheric%20motion.%20A%20new%20source%20of%20high%20resolution%20wind%20velocity%20data%20is%20from%20satellite%20scatterometers.%20Scatterometer%20wind%20data%20have%20spatial%20resolutions%20fine%20enough%20to%20calculate%20velocity%20shears%20across%20the%20shelf.%20On%20average%20the%20wind%20shears%20produce%20positive%20wind%20stress%20curls%20which%20promote%20upwelling%20due%20to%20Ekman%20pumping.%20Calculations%20show%20that%20the%20transport%20due%20to%20this%20upwelling%20is%2025%25%20-%2050%25%20of%20the%20transport%20due%20to%20Ekman%20transport.%20On%20average%20Ekman%20transport%20produces%20downwelling%20while%20the%20transport%20due%20to%20Ekman%20pumping%20produces%20upwelling.%20The%20effect%20of%20the%20downwelling%20due%20to%20Ekman%20transport%20is%20apparent%20near%20the%20coast%20%280%20-%2020%20km%20from%20the%20coast%29%20at%20depths%20between%2050%20-%20250%20m.%20In%20this%20area%20there%20is%20a%20significant%20positive%20correlation%20between%20the%20anomalies%20of%20salinity%20with%20the%20anomalies%20of%20Ekman%20transport.%20The%20effect%20of%20the%20upwelling%20due%20to%20Ekman%20pumping%20is%20seen%20in%20the%20mid-shelf%20area%20%2840%20-%2080%20km%20from%20the%20coast%29%20at%20depths%20between%20100%20-%20200%20m.%20Here%20the%20anomalies%20of%20salinity%20are%20positively%20correlated%20with%20the%20anomalies%20of%20vertical%20velocities.%20The%20covariance%20between%20the%20temperature%20and%20salinity%20across%20the%20Seward%20Line%20suggests%20that%20offshore%20surface%20spreading%20of%20the%20Alaska%20Coastal%20Current%20and%20entrainment%20generates%20a%20deep%20onshore%20flow%20of%20high%20saline%2C%20warm%20water%20onto%20the%20shelf.%20The%20onshore%20flow%20of%20water%20is%20expected%20to%20be%20high%20in%20nutrients%20which%20can%20then%20be%20brought%20up%20to%20the%20euphotic%20zone%20by%20the%20upwelling%20produced%20by%20Ekman%20pumping.%20The%20upwelling%20could%20be%20an%20important%20mechanism%20to%20supply%20nutrients%20to%20the%20surface%20layer.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22Old%20Dominion%20University%22%2C%22date%22%3A%222007%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fdigitalcommons.odu.edu%5C%2Foeas_etds%5C%2F81%5C%2F%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-03-27T20%3A24%3A48Z%22%7D%7D%2C%7B%22key%22%3A%22SIFIXMMI%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Sarkar%22%2C%22parsedDate%22%3A%222007%22%2C%22numChildren%22%3A1%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ESarkar%2C%20Nandita%20%28%3Cb%3E2007%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Mixed%20Layer%20Dynamics%20Along%20the%20Seward%20Line%20in%20the%20Northern%20Gulf%20of%20Alaska%2C%20Norfolk%2C%20VA%2C%20Old%20Dominion%20University%2C%202007%2C%20abgerufen%20am%2025.03.2021%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fdigitalcommons.odu.edu%5C%2Foeas_etds%5C%2F82%5C%2F%27%3Ehttps%3A%5C%2F%5C%2Fdigitalcommons.odu.edu%5C%2Foeas_etds%5C%2F82%5C%2F%3C%5C%2Fa%3E%2C%20DOI%3A%2010.25777%5C%2FZM8Q-N531%2C%20Chair%3A%20Thomas%20C.%20Royer%3B%5CnCommittee%3A%20Chester%20Grosch%2C%20John%20A.%20Adam%2C%20John%20M.%20Klinck%2C%20Thomas%20J.%20Weingartner.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Mixed%20Layer%20Dynamics%20Along%20the%20Seward%20Line%20in%20the%20Northern%20Gulf%20of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Nandita%22%2C%22lastName%22%3A%22Sarkar%22%7D%5D%2C%22abstractNote%22%3A%22The%20northern%20Gulf%20of%20Alaska%20marine%20ecosystem%20is%20very%20productive%20with%20a%20%5C%22nutrient%20paradox%5C%22.%20Primary%20producers%20require%20light%20and%20nutrients%20for%20photosynthesis.%20A%20primary%20source%20of%20nutrients%20is%20the%20deep%20ocean%2C%20while%20light%20is%20available%20in%20a%20relatively%20shallow%20layer%20in%20the%20upper%20ocean.%20In%20most%20productive%20parts%20of%20the%20world%20oceans%2C%20nutrients%20are%20brought%20to%20surface%20waters%20by%20upwelling.%20However%2C%20in%20the%20northern%20Gulf%20of%20Alaska%2C%20the%20winds%20are%20generally%20downwelling%20inducing%20and%20the%20mechanism%28s%29%20by%20which%20nutrients%20are%20brought%20to%20the%20euphotic%20zone%20are%20not%20known.%20One%20mechanism%20that%20might%20bring%20nutrients%20into%20the%20euphotic%20zone%20is%20the%20deepening%20of%20mixed%20layers.%20This%20dissertation%20is%20the%20first%20study%20of%20mixed%20layer%20depths%20%28MLDs%29%20across%20the%20continental%20shelf%20of%20the%20northern%20Gulf%20of%20Alaska.%20Hydrographic%20and%20nutrient%20data%20have%20been%20collected%20as%20part%20of%20the%20GLOBEC%20NEP%20%28GLOBal%20ocean%20Ecosystem%20dynamics%20North%20East%20Pacific%29%20project%20along%20the%20Seward%20Line%20in%20the%20northern%20Gulf%20of%20Alaska.%20The%20Seward%20Line%20of%20hydrographic%20stations%20extends%20from%20the%20coast%2C%20across%20the%20continental%20shelf%20and%20beyond%20the%20shelf%20break.%20It%20intersects%20two%20major%20circulation%20features%5Cu2014the%20Alaska%20Coastal%20Current%20%28ACC%29%20on%20the%20inner%20shelf%20and%20the%20Alaska%20Current%20offshore%20of%20the%20shelf-break.%5CnThis%20dissertation%20contains%20calculations%20and%20descriptions%20of%20the%20across-shelf%20and%20temporal%20%28seasonal%20and%20interannual%29%20variability%20in%20the%20MLDs%20and%20assessments%20of%20the%20role%20of%20MLDs%20in%20providing%20nutrients%20to%20the%20euphotic%20zone.%20The%20MLDs%20across%20the%20shelf%20are%20deepest%20in%20late%20winter%5C%2Fearly%20spring%20and%20shallowest%20in%20summer.%20In%20general%2C%20MLDs%20on%20the%20shelf%20are%20deeper%20than%20those%20offshelf%2C%20with%20deepest%20MLDs%20near%20the%20shelf-break.%20This%20annual%20cycle%20is%20primarily%20in%20response%20to%20freshwater%20discharge%2C%20winds%20and%20solar%20insolation.%20On%20longer%20timescales%2C%20four%20forcing%20mechanisms%20have%20been%20identified%3A%20the%20direct%20interaction%20of%20freshwater%20discharge%20and%20winds%3B%20an%20estuarine-type%20circulation%20controlled%20by%20freshwater%20discharge%20and%20winds%3B%20upwelling%20related%20to%20the%20curl%20of%20the%20wind%20stress%3B%20and%20interactions%20with%20anticylonic%20eddies.%5CnInterannually%2C%20deep%20winter%20MLDs%20show%20a%20deepening%20trend%20near%20the%20coast%20and%20a%20shoaling%20trend%20mid-shelf%20and%20at%20the%20shelf-break.%20This%20might%20lead%20to%20greater%20productivity%20near%20the%20coast%20and%20decreasing%20productivity%20offshore.%20A%20primary%20source%20of%20nutrients%20to%20the%20region%20is%20the%20deep%20ocean%2C%20but%20the%20coastal%20runoff%20might%20be%20a%20secondary%20source%20at%20the%20inner%20shelf.%20The%20nutrients%20correlate%20well%20with%20MLDs%20on%20the%20inner%20and%20mid-shelf%2C%20where%20they%20play%20a%20significant%20role%20in%20the%20supply%20of%20nutrients%20to%20the%20euphotic%20zone.%20However%2C%20at%20the%20shelf-break%20and%20beyond%2C%20other%20mechanisms%20might%20be%20more%20important%20for%20supplying%20nutrients.%20Further%20studies%20need%20to%20be%20done%20to%20include%20the%20effects%20of%20bathymetric%20interactions%20and%20horizontal%20advection%20and%20to%20resolve%20the%20episodic%20wind%20events%20that%20are%20possibly%20responsible%20for%20deep%20mixing.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22Old%20Dominion%20University%22%2C%22date%22%3A%222007%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fdigitalcommons.odu.edu%5C%2Foeas_etds%5C%2F82%5C%2F%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222021-03-27T20%3A25%3A04Z%22%7D%7D%2C%7B%22key%22%3A%223FWYCWVL%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Pinchuk%22%2C%22parsedDate%22%3A%222006%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EPinchuk%2C%20Alexei%20I.%20%28%3Cb%3E2006%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Distribution%2C%20Growth%20And%20Egg%20Production%20Of%20Euphausiids%20In%20The%20Northern%20Gulf%20Of%20Alaska%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202006%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8916%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8916%3C%5C%2Fa%3E%2C%20Chair%3A%20Russell%20Hopcroft.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Distribution%2C%20Growth%20And%20Egg%20Production%20Of%20Euphausiids%20In%20The%20Northern%20Gulf%20Of%20Alaska%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Alexei%20I.%22%2C%22lastName%22%3A%22Pinchuk%22%7D%5D%2C%22abstractNote%22%3A%22The%20euphausiids%20Thysanoessa%20inermis%2C%20Thysanoessa%20spinifera%20and%20Euphausia%20pacifica%20are%20key%20pelagic%20grazers%20and%20important%20prey%20for%20many%20vertebrates%20in%20the%20Gulf%20of%20Alaska%20%28GOA%29.%20This%20thesis%20provides%20the%20first%20account%20of%20distribution%2C%20egg%20production%2C%20growth%2C%20development%2C%20and%20temporal%20variability%20in%20abundance%20of%20the%20euphausiids%20in%20relation%20to%20environmental%20variations%20in%20the%20northern%20GOA.%20T.%20inermis%20and%20T%20spinifera%20were%20abundant%20on%20the%20shelf%20within%20120-130%20km%20from%20the%20coast%2C%20while%20E.%20pacifica%20originated%20from%20offshore%20and%20was%20advected%20onto%20the%20shelf%20during%20summer.%20E.%20pacifica%20produced%20multiple%20broods%20with%20brood%20size%20strongly%20related%20to%20ambient%20chlorophyll%20a%20concentrations.%20In%20contrast%2C%20T.%20inermis%20released%20eggs%20once%20in%20the%20season%20and%20its%20brood%20size%20did%20not%20depend%20on%20chlorophyll%20content.%20Early%20development%20of%20these%20species%20showed%20a%20remarkably%20similar%20response%20to%20changes%20in%20temperature.%20The%20highest%20molting%20increments%20were%20observed%20during%20the%20spring%20phytoplankton%20bloom%20for%20T.%20inermis%2C%20and%20in%20summer%20for%20%20T.%20spinifera%20and%20E.%20pacifica%2C%20suggesting%20coupling%20with%20food%20availability.%20The%20molting%20rates%20were%20strongly%20influenced%20by%20temperature.%20Growth%20rates%20depended%20on%20euphausiid%20size%2C%20and%20were%20close%20to%200%20in%20early%20spring%2C%20reaching%20maximum%20values%20in%20May%20%280.123%20mm%20d-1%20or%200.023%20d%20-1%20for%20T.%20inermis%29%20and%20July%20%280.091%20mm%20d-1%20%20or%200.031%20d-1%20for%20T.%20spinifera%29.%20The%20growth%20rates%20for%20E.%20pacifica%20remained%20below%200.07%20mm%20d%20-1%20%280.016%20d-1%29%20throughout%20the%20season.%20The%20relationship%20between%20T.%20inermis%20weight%20specific%20growth%20rate%20%28adjusted%20to%205%5CufffdC%29%20and%20ambient%20chlorophyll-a%20concentration%20fit%20a%20Michaelis-Menten%20curve%20%28r2%3D0.48%29%2C%20but%20such%20relationships%20were%20not%20significant%20for%20T.%20spinifera%20or%20E.%20pacifica.%20Reproduction%20of%20T.%20inermis%20occurred%20during%20April%20in%201998%20and%202003%2C%20and%20was%20extended%20through%20May%20in%201999-2002.%20The%20spawning%20of%20T.%20inermis%20and%20T.%20spinifera%20was%20related%20to%20the%20spring%20diatom%20bloom%20on%20the%20inner%20shelf%2C%20while%20the%20spawning%20of%20%20E.%20pacifica%20occurred%20later%20in%20season%2C%20when%20the%20water%20temperature%20increased.%20A%20strong%20increase%20in%20abundance%20of%20T.%20inermis%2C%20associated%20with%20the%20extended%20colder%20phase%20in%20the%20North%20Pacific%2C%20indicates%20that%20progressive%20cooling%20in%201999-2002%20may%20have%20resulted%20in%20greater%20reproductive%20success%20of%20early%20spawning%20T.%20inermis%20on%20the%20inner%20shelf.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222006%22%2C%22language%22%3A%22en-US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8916%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A09Z%22%7D%7D%2C%7B%22key%22%3A%22LKXBNB2F%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Liu%22%2C%22parsedDate%22%3A%222006%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3ELiu%2C%20Hui%20%28%3Cb%3E2006%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Growth%20Rates%20Of%20Calanoid%20Copepods%20In%20The%20Northern%20Gulf%20Of%20Alaska%2C%20And%20Their%20Relationships%20To%20Temperature%2C%20Chlorophyll%20And%20Body%20Size%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202006%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8914%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8914%3C%5C%2Fa%3E%2C%20Chair%3A%20Russell%20Hopcroft%3B%5CnCommitee%3A%20Kenneth%20O.%20Coyle%2C%20Thomas%20Wiengartner.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Growth%20Rates%20Of%20Calanoid%20Copepods%20In%20The%20Northern%20Gulf%20Of%20Alaska%2C%20And%20Their%20Relationships%20To%20Temperature%2C%20Chlorophyll%20And%20Body%20Size%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Hui%22%2C%22lastName%22%3A%22Liu%22%7D%5D%2C%22abstractNote%22%3A%22The%20juvenile%20growth%20rate%20and%20development%20time%20of%20the%20dominant%20calanoid%20copepods%20in%20the%20northern%20Gulf%20of%20Alaska%20were%20investigated.%20The%20utility%20of%20the%20artificial-cohort%20method%20was%20successfully%20validated%20as%20the%20most%20practical%20approach%20for%20estimating%20copepod%20growth%20rates%20in%20this%20ecosystem.%20The%20underlying%20functional%20responses%20of%20growth%20rates%20to%20temperature%2C%20food%20concentration%2C%20and%20body%20size%20were%20thoroughly%20explored%20for%20Neocalanus%20flemingeri%5C%2Fplumchrus%2C%20Metridia%20pacifica%2C%20Calanus%20marshallae%2C%20C.%20pacificus%20and%20%20Pseudocalanus%20spp.%20These%20results%20lay%20the%20foundation%20for%20the%20calculation%20of%20copepod%20secondary%20production%20and%20ongoing%20ecosystem%20modeling%20activities%20for%20the%20northern%20Gulf%20of%20Alaska%2C%20and%20will%20contribute%20to%20the%20refinement%20of%20global%20models%20of%20copepod%20growth%20rates.%20%20%20%20In%20general%2C%20the%20rates%20of%20copepod%20growth%20were%20negatively%20size-dependent.%20However%2C%20a%20positive%20relationship%20between%20growth%20rate%20and%20body%20size%20within%20each%20stage%20emerged%20in%20response%20to%20food%20climate.%20The%20effect%20of%20temperature%20on%20growth%20rates%20was%20prominent%2C%20but%20confounded%20with%20food%20conditions%20and%20body%20sizes%2C%20which%20also%20vary%20with%20temperature%20conditions.%20Copepod%20growth%20rates%20were%20significantly%20related%20to%20chlorophyll%20a%2C%20and%20were%20frequently%20food-limited%2C%20particularly%20for%20later%20developmental%20stages%20during%20the%20summer.%20Compared%20to%20other%20co-occurring%20calanoid%20copepods%2C%20egg-carrying%20species%20%28i.e.%20%20Pseudocalanus%29%20tend%20to%20grow%20slowly%20to%20meet%20their%20unique%20life%20history%20strategy.%20Statistically%2C%20more%20variability%20in%20temperature%20corrected%20growth%20rates%20can%20be%20explained%20by%20composite%20nonlinear%20models%20that%20incorporate%20development%20stage%20and%20body%20size%20into%20the%20traditional%20Michaelis-Menten%20relationship.%20The%20species-specific%20comparisons%20of%20the%20measured%20growth%20rates%20with%20those%20predicted%20by%20global%20models%20of%20copepod%20growth%20suggested%20more%20direct%20measurements%20of%20copepod%20growth%20rates%20in%20various%20ecosystems%20are%20required%20for%20fully%20appreciating%20the%20global%20patterns%20of%20copepod%20growth.%20Caution%20should%20be%20used%20in%20the%20widespread%20application%20of%20those%20models%20for%20estimating%20copepod%20secondary%20production%2C%20especially%20in%20polar%20and%20sub-polar%20waters.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222006%22%2C%22language%22%3A%22en-US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8914%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A11%3A20Z%22%7D%7D%2C%7B%22key%22%3A%22UYPZSR94%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Childers%22%2C%22parsedDate%22%3A%222005%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EChilders%2C%20Amy%20Ruehs%20%28%3Cb%3E2005%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Nutrient%20Dynamics%20In%20The%20Northern%20Gulf%20Of%20Alaska%20And%20Prince%20William%20Sound%3A%201998--2001%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202005%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8872%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8872%3C%5C%2Fa%3E%2C%20Chair%3A%20Terry%20Whitledge.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Nutrient%20Dynamics%20In%20The%20Northern%20Gulf%20Of%20Alaska%20And%20Prince%20William%20Sound%3A%201998--2001%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Amy%20Ruehs%22%2C%22lastName%22%3A%22Childers%22%7D%5D%2C%22abstractNote%22%3A%22The%20northern%20Gulf%20of%20Alaska%20%28GOA%29%20shelf%20is%20a%20productive%20coastal%20region%20that%20supports%20several%20commercially%20important%20fisheries.%20The%20mechanisms%20supporting%20such%20high%20levels%20of%20productivity%20over%20this%20shelf%20are%20not%20understood%2C%20however%2C%20since%20it%20is%20a%20downwelling-dominated%20shelf.%20In%20an%20effort%20to%20understand%20the%20mechanisms%20underlying%20such%20high%20biological%20productivity%2C%20nutrient%20distributions%20were%20determined%2025%20times%20throughout%201998%2C%201999%2C%202000%2C%20and%202001%20from%20over%20the%20northern%20GOA%20shelf%20and%20in%20Prince%20William%20Sound%20%28PWS%29.%20%20%20%20Deep%20water%20%28%3E75%20m%29%20nitrate%2C%20silicate%20and%20phosphate%20concentrations%20were%20positively%20correlated%20with%20salinity%20indicating%20an%20offshore%20nutrient%20source.%20The%20average%20annual%20cycle%20was%20established%2C%20in%20which%20nitrate%2C%20silicate%20and%20phosphate%20responded%20seasonally%20to%20physical%20and%20biological%20processes.%20Ammonium%20concentrations%20were%20generally%20low%20and%20uniform%20%28%3C1.2%20muM%29%20with%20occasional%20patches%20of%20higher%20concentrations.%20During%20each%20summer%2C%20an%20onshore%20flux%20of%20dense%20nutrient-rich%20bottom%20water%20onto%20the%20shelf%20was%20evident%20when%20the%20downwelling%20relaxed.%20This%20seasonal%20flux%20created%20nutrient%20reservoirs%20over%20the%20deeper%20shelf%20regions%20that%20were%20eventually%20mixed%20throughout%20the%20water%20column%20during%20the%20winter%20months.%20This%20annual%20evolution%20may%20be%20vital%20to%20the%20productivity%20of%20this%20shelf.%20%20%20%20A%20large%20degree%20of%20interannual%20variability%20was%20found%20during%20the%20study%2C%20which%20included%20El%20Nino%20%281998%29%20and%20La%20Nina%20%281999%29%20years.%20Spring%20phytoplankton%20biomass%20over%20the%20shelf%20was%20highest%20in%202000%20when%20the%20upper%20waters%20were%20nutrient%20enriched%20and%20strongly%20stratified.%20The%20highest%20phytoplankton%20biomass%20was%20measured%20in%20May%201999%20during%20the%20passage%20of%20a%20slope%20eddy%2C%20which%20demonstrated%20the%20potential%20of%20these%20phenomena%20to%20greatly%20enhance%20primary%20productivity.%20A%20large%20degree%20of%20spatial%20variability%20was%20also%20found%2C%20both%20cross-shelf%20and%20along-shelf.%20Hinchinbrook%20Canyon%20was%20found%20to%20consistently%20have%20high%20salinity%2C%20nutrient-enriched%20bottom%20waters%20suggesting%20it%20plays%20an%20important%20role%20in%20the%20transport%20of%20slope%20waters%20onto%20the%20shelf%20and%20probably%20into%20PWS.%20Along-shelf%20trends%20were%20found%20in%20the%20upper%20coastal%20waters%20in%20the%20winter%20and%20spring%2C%20with%20higher%20salinities%2C%20temperatures%2C%20and%20nutrient%20concentrations%20upstream%20of%20PWS.%20The%20nutrient%20dynamics%20were%20similar%20in%20PWS%20and%20over%20the%20shelf%5C%2Fslope%20in%202001%3B%20however%2C%20nutrient%20drawdown%2C%20followed%20by%20depletion%2C%20and%20the%20spring%20bloom%20appeared%20earlier%20and%20stronger%20in%20PWS.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222005%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8872%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A10%3A57Z%22%7D%7D%2C%7B%22key%22%3A%22779CVXNL%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Gibson%22%2C%22parsedDate%22%3A%222004-12%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EGibson%2C%20Georgina%20Anne%20%28%3Cb%3E2004%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Non-linear%20dynamics%20of%20marine%20ecosystem%20models%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202004%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5035%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5035%3C%5C%2Fa%3E%2C%20Chair%3A%20David%20Musgrave.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Non-linear%20dynamics%20of%20marine%20ecosystem%20models%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22Georgina%20Anne%22%2C%22lastName%22%3A%22Gibson%22%7D%5D%2C%22abstractNote%22%3A%22Despite%20a%20rapid%20trend%20towards%20more%20realistic%20Nutrient-Phytoplankton-Zooplankton%20%28NPZ%29%20models%2C%20in%20which%20zooplankton%20are%20presented%20with%20multiple%20nutritional%20resources%2C%20investigations%20into%20the%20fundamental%20dynamics%20of%20these%20newer%20models%20have%20been%20limited.%20The%20objective%20of%20this%20dissertation%20was%20to%20explore%20the%20dynamical%20behavior%20of%20such%20NPZ%20models%20parameterized%20for%20the%20coastal%20Gulf%20of%20Alaska.%20With%20alternative%20stationary%20forcing%20regimes%20and%20zooplankton%20grazing%20functions%2C%20the%20dynamics%20of%20one-dimensional%20NPZ%20models%20were%20investigated%20for%20a%20range%20of%20specific%20predation%20rates%20%28h%29%20and%20predation%20exponents%20%28q%29%2C%20which%20together%20define%20the%20form%20of%20the%20predation%20%28model%20closure%29%20function.%20Oscillations%20in%20state%20variables%20are%20shown%20to%20be%20an%20intrinsic%20property%20of%20the%20NPZ%20models%2C%20not%20dependent%20on%20variable%20seasonal%20forcing%20for%20their%20existence.%20Increasing%20mixed%20layer%20diffusivity%20or%20reducing%20mixed%20layer%20depth%20increased%20model%20excitability%3B%20it%20is%20hypothesized%20that%20this%20is%20due%20to%20the%20resultant%20increase%20in%20flux%20of%20utilizable%20nutrient.%20Model%20behavior%20was%20also%20strongly%20influenced%20by%20the%20form%20of%20both%20the%20grazing%20and%20predation%20functions.%20For%20all%20of%20the%20grazing%20functions%20implemented%2C%20Hopf%20bifurcations%2C%20where%20the%20form%20of%20the%20solution%20transitioned%20between%20steady%20equilibrium%20and%20periodic%20limit%20cycles%2C%20persisted%20across%20the%20q-h%20parameter%20space.%20Regardless%20of%20the%20values%20of%20h%20and%20q%2C%20with%20some%20forms%20of%20the%20grazing%20function%20steady%20equilibrium%20solutions%20that%20simultaneously%20comprised%20non-zero%20concentrations%20for%20all%20model%20components%20could%20not%20be%20found.%20The%20inclusion%20of%20sinking%20detritus%20in%20the%20model%20had%20important%20implications%20for%20the%20composition%20and%20excitability%20of%20model%20solutions%2C%20generally%20increasing%20the%20region%20of%20q-h%20space%20for%20which%20oscillatory%20solutions%20were%20found.%20Therefore%2C%20in%20order%20to%20correctly%20simulate%20the%20depth-explicit%20concentrations%20of%20model%20components%2C%20or%20to%20have%20an%20accurate%20understanding%20of%20the%20potential%20excitability%20of%20the%20system%2C%20inclusion%20of%20this%20component%20is%20valuable.%20This%20dissertation%20highlights%20the%20importance%20of%20understanding%20the%20potential%20impact%20that%20choice%20of%20functional%20response%20may%20have%20on%20the%20intrinsic%20oscillatory%20nature%20of%20a%20model%20prior%20to%20interpreting%20results%20from%20coupled%20bio-physical%20simulations.%20As%20we%20come%20to%20rely%20more%20on%20ecosystem%20models%20as%20a%20tool%20to%20interpret%20marine%20ecosystem%20functionality%20it%20will%20be%20important%20to%20improve%20our%20understanding%20of%20the%20non-linear%20behavior%20inherent%20in%20these%20models.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%222004-12%22%2C%22language%22%3A%22en_US%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F5035%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A10%3A42Z%22%7D%7D%2C%7B%22key%22%3A%22KETZGWZ7%22%2C%22library%22%3A%7B%22id%22%3A5142352%7D%2C%22meta%22%3A%7B%22creatorSummary%22%3A%22Williams%22%2C%22parsedDate%22%3A%222003-06-14%22%2C%22numChildren%22%3A2%7D%2C%22bib%22%3A%22%3Cdiv%20class%3D%5C%22csl-bib-body%5C%22%20style%3D%5C%22line-height%3A%201.35%3B%20padding-left%3A%201em%3B%20text-indent%3A-1em%3B%5C%22%3E%5Cn%20%20%3Cdiv%20class%3D%5C%22csl-entry%5C%22%3E%3Cb%3EWilliams%2C%20William%20James%20%28%3Cb%3E2003%3C%5C%2Fb%3E%29%3A%3C%5C%2Fb%3E%20Idealized%20Modeling%20Of%20Seasonal%20Variation%20In%20The%20Alaska%20Coastal%20Current%2C%20Fairbanks%2C%20AK%2C%20University%20of%20Alaska%20Fairbanks%2C%202003%2C%20%3Ca%20class%3D%27zp-ItemURL%27%20href%3D%27https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8670%27%3Ehttps%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8670%3C%5C%2Fa%3E%2C%20Chair%3A%20Thomas%20Weingartner.%3C%5C%2Fdiv%3E%5Cn%3C%5C%2Fdiv%3E%22%2C%22data%22%3A%7B%22itemType%22%3A%22thesis%22%2C%22title%22%3A%22Idealized%20Modeling%20Of%20Seasonal%20Variation%20In%20The%20Alaska%20Coastal%20Current%22%2C%22creators%22%3A%5B%7B%22creatorType%22%3A%22author%22%2C%22firstName%22%3A%22William%20James%22%2C%22lastName%22%3A%22Williams%22%7D%5D%2C%22abstractNote%22%3A%22Analytical%20and%20idealized-numerical%20models%20were%20used%20to%20understand%20the%20physical%20processes%20that%20govern%20the%20seasonal%20variation%20and%20fate%20of%20the%20freshwater%20in%20the%20Alaska%20Coastal%20Current%20%28ACC%29.%20The%20ACC%20is%20forced%20by%20freshwater%20inflow%20and%20by%20mean%20easterly%20winds%20that%20cause%20downwelling%20over%20the%20shelf.%20%20%20%20Two-dimensional%20modeling%20using%20a%20line-source%20buoyant%20inflow%20gives%20the%20coastal%20current%20depth%20%3Cmath%3E%20%3Cf%3E%20H%3D%3Cfr%3E%3Cnu%3E3%3Csup%3E2%5C%2F3%3C%5C%2Fsup%3E%3C%5C%2Fnu%3E%3Cde%3E2%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%3Cfen%20lp%3D%5C%22par%5C%22%3E%3Cfr%3E%3Cnu%3E%20f%3Csup%3E2%3C%5C%2Fsup%3EQ%3Csup%3E2%3C%5C%2Fsup%3E%3C%5C%2Fnu%3E%3Cde%3Eg%3Csup%3E%27%3C%5C%2Fsup%3E%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%20%3Crp%20post%3D%5C%22par%5C%22%3E%3C%5C%2Ffen%3Et%3Csup%3E2%5C%2F3%3C%5C%2Fsup%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%20and%20coastal%20current%20width%20%3Cmath%3E%20%3Cf%3E%20Y%3Cinf%3E2D%3C%5C%2Finf%3E%3D3%3Csup%3E1%5C%2F3%3C%5C%2Fsup%3E%3Cfen%20lp%3D%5C%22par%5C%22%3E%3Cfr%3E%3Cnu%3Eg%3Csup%3E%27%20%3C%5C%2Fsup%3EQ%3C%5C%2Fnu%3E%3Cde%3Ef%3Csup%3E2%3C%5C%2Fsup%3E%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%3Crp%20post%3D%5C%22par%5C%22%3E%3C%5C%2Ffen%3E%3Csup%3E%201%5C%2F3%3C%5C%2Fsup%3Et%3Csup%3E1%5C%2F3%3C%5C%2Fsup%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%2C%20where%20f%20is%20the%20Coriolis%20frequency%2C%20g%20%27%20is%20reduced%20gravity%2C%20Q%20is%20inflow%20rate%20and%20%20t%20is%20time%20since%20inflow%20began.%20Addition%20of%20downwelling%20wind-stress%20causes%20a%20steep%20coastal%20current%20front%20that%20intersects%20the%20bottom%20and%20is%20either%20convecting%2C%20stable%20and%20steady%2C%20or%20stable%20and%20oscillatory%20depending%20on%20%3Cmath%3E%20%3Cf%3E%20%3Cfr%3E%3Cnu%3ED%3C%5C%2Fnu%3E%3Cde%3E%3Cg%3Ed%3C%5C%2Fg%3E%3Cinf%3E%2A%3C%5C%2Finf%3E%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%20and%20%3Cmath%3E%20%3Cf%3E%20%3Cfr%3E%3Cnu%3Eb%3Cinf%3Ey%3C%5C%2Finf%3E%3C%5C%2Fnu%3E%3Cde%3Ef%3Csup%3E2%3C%5C%2Fsup%3E%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%2C%20where%20D%20is%20bottom%20depth%2C%20delta%2A%20is%20an%20Ekman%20depth%20and%20by%20is%20the%20cross-shelf%20buoyancy%20gradient.%20%20%20%20Three-dimensional%20modeling%20of%20a%20half-line%20source%20initially%20develops%20two-dimensionally%20but%20becomes%20three-dimensional%20from%20a%20balance%20between%20coastal%20influx%20of%20buoyancy%20and%20its%20downstream%20transport.%20This%20balance%20results%20in%20a%20coastal%20current%20depth%20limit%20%3Cmath%3E%20%3Cf%3E%20H%3Cinf%3E%3Crf%3Emax%3C%5C%2Frf%3E%3C%5C%2Finf%3E%3D%3Cfen%20lp%3D%5C%22par%5C%22%3E%3Cfr%3E%3Cnu%3E2Qf%3C%5C%2Fnu%3E%3Cde%3Eg%3Csup%3E%20%27%3C%5C%2Fsup%3E%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%3Crp%20post%3D%5C%22par%5C%22%3E%3C%5C%2Ffen%3E%3Csup%3E1%5C%2F2%3C%5C%2Fsup%3Ex%3Csup%3E%201%5C%2F2%3C%5C%2Fsup%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%2C%20where%20x%20is%20along-shelf%20distance.%20This%20limit%20is%20unchanged%20under%20downwelling%20wind-stress%20and%20is%20reached%20on%20time%20scales%20of%20less%20than%201%20month%20for%20the%20ACC.%20The%20half-line%20source%20coastal%20current%20width%20develops%20as%20%3Cmath%3E%20%3Cf%3E%20Y%3Cinf%3E2D%3C%5C%2Finf%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%20away%20from%20the%20beginning%20of%20the%20line%20source.%20Imposition%20of%20a%20downwelling%20wind-stress%20tau%20results%20in%20an%20approximate%20balance%20among%20wind-stress%20and%20along-%20and%20cross-shelf%20momentum%20advection%20so%20that%20the%20current%20width%20is%20reduced%20to%20%3Cmath%3E%20%3Cf%3E%20Y%3Cinf%3Ewind%3C%5C%2Finf%3E%26ap%3BL%3Cinf%3ED%3C%5C%2Finf%3E%3Cfen%20lp%3D%5C%22par%5C%22%3E%3Cfr%3E%3Cnu%3EQf%3C%5C%2Fnu%3E%20%3Cde%3E%3Cg%3Et%3C%5C%2Fg%3E%5C%2F%3Cg%3Er%3C%5C%2Fg%3E%3Cinf%3E0%3C%5C%2Finf%3E%3C%5C%2Fde%3E%3C%5C%2Ffr%3E%3Crp%20post%3D%5C%22par%5C%22%3E%3C%5C%2Ffen%3E%3Csup%3E%201%5C%2F2%3C%5C%2Fsup%3E%3C%5C%2Ff%3E%20%3C%5C%2Fmath%3E%2C%20where%20LD%20is%20the%20Rossby%20radius%20of%20deformation.%20%20%20%20Waves%20and%20eddying%20motions%20eventually%20grow%20in%20the%20half-line%20source%20coastal%20current%20with%20wavelengths%20proportional%20to%20the%20coastal%20current%20width%20and%20with%20a%20downstream%20phase%20speed%20slower%20than%20the%20maximum%20current%20speed.%20These%20features%20cause%20an%20offshore%20flux%20of%20buoyant%20water%2C%20a%20broader%20coastal%20current%20and%20accumulation%20of%20buoyancy%20on%20the%20shelf.%20Increasing%20downwelling%20wind%20stress%20reduces%20the%20effects%20of%20the%20instabilities.%20Although%20buoyancy%20accumulates%20on%20the%20shelf%20during%20most%20model%20runs%2C%20there%20is%20little%20accumulation%20under%20maximum%20winter%20downwelling%20wind-stress.%20This%20suggests%20that%20freshwater%20accumulates%20on%20the%20shelf%20from%20spring%20through%20fall%2C%20but%20is%20then%20transported%20downstream%20during%20winter.%22%2C%22thesisType%22%3A%22PhD%20Dissertation%22%2C%22university%22%3A%22University%20of%20Alaska%20Fairbanks%22%2C%22date%22%3A%226%5C%2F14%5C%2F2003%22%2C%22language%22%3A%22en%22%2C%22url%22%3A%22https%3A%5C%2F%5C%2Fscholarworks.alaska.edu%5C%2Fhandle%5C%2F11122%5C%2F8670%22%2C%22collections%22%3A%5B%22R52AJLL5%22%5D%2C%22dateModified%22%3A%222020-12-01T03%3A10%3A37Z%22%7D%7D%5D%7D
O’Daly, Stephanie Hicks (2024): Transformations and Deep Intrusions of Particles and Plankton in the Global Oceans: Which Particles Sink Deeper and Why, Fairbanks, AK, University of Alaska Fairbanks, 2024, https://www.proquest.com/dissertations-theses/transformations-deep-intrusions-particles/docview/3094176930/se-2?accountid=14470.
De Sousa, Leandra (2011): Seabird Habitat Use And Zooplankton Abundance And Biomass In Relation To Water Mass Properties In The Northern Gulf Of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2011, https://scholarworks.alaska.edu/handle/11122/9077, Chairs: Kenneth O. Coyle, Thomas Weingartner;
Committee: Ronald Barry, Alan Springer, George Hunt Jr.
Janout, Markus A. (2009): Heat And Freshwater Controlling Processes On The Northern Gulf Of Alaska Shelf, 2009, https://scholarworks.alaska.edu/handle/11122/9010, Chair: Thomas Weingartner;
Committee: Kenneth O. Coyle, Katherine Hedstrom, Mark Johnson, Stephen Okkonen.
Schroeder, Isaac (2007): Annual and interannual variability in the wind field and the hydrography along the Seward Line in the northern Gulf of Alaska, Norfolk, VA, Old Dominion University, 2007, abgerufen am 25.03.2021, https://digitalcommons.odu.edu/oeas_etds/81/, DOI: 10.25777/91VW-RQ18, Chair: Thomas C. Royer;
Committee: Chester Grosch, Nicholas Bond, Larry P. Atkinson.
Sarkar, Nandita (2007): Mixed Layer Dynamics Along the Seward Line in the Northern Gulf of Alaska, Norfolk, VA, Old Dominion University, 2007, abgerufen am 25.03.2021, https://digitalcommons.odu.edu/oeas_etds/82/, DOI: 10.25777/ZM8Q-N531, Chair: Thomas C. Royer;
Committee: Chester Grosch, John A. Adam, John M. Klinck, Thomas J. Weingartner.
Pinchuk, Alexei I. (2006): Distribution, Growth And Egg Production Of Euphausiids In The Northern Gulf Of Alaska, Fairbanks, AK, University of Alaska Fairbanks, 2006, https://scholarworks.alaska.edu/handle/11122/8916, Chair: Russell Hopcroft.
Liu, Hui (2006): Growth Rates Of Calanoid Copepods In The Northern Gulf Of Alaska, And Their Relationships To Temperature, Chlorophyll And Body Size, Fairbanks, AK, University of Alaska Fairbanks, 2006, https://scholarworks.alaska.edu/handle/11122/8914, Chair: Russell Hopcroft;
Commitee: Kenneth O. Coyle, Thomas Wiengartner.
Childers, Amy Ruehs (2005): Nutrient Dynamics In The Northern Gulf Of Alaska And Prince William Sound: 1998--2001, Fairbanks, AK, University of Alaska Fairbanks, 2005, https://scholarworks.alaska.edu/handle/11122/8872, Chair: Terry Whitledge.
Gibson, Georgina Anne (2004): Non-linear dynamics of marine ecosystem models, Fairbanks, AK, University of Alaska Fairbanks, 2004, https://scholarworks.alaska.edu/handle/11122/5035, Chair: David Musgrave.
Williams, William James (2003): Idealized Modeling Of Seasonal Variation In The Alaska Coastal Current, Fairbanks, AK, University of Alaska Fairbanks, 2003, https://scholarworks.alaska.edu/handle/11122/8670, Chair: Thomas Weingartner.