Home » Highlights

Category: Highlights

Gulf of Alaska Research Opportunity: Murdock Trust Seed Funding (GEO)

We are seeking new partners for the newly installed Northern Gulf of Alaska shelf moored ecosystem observatory (GEO).

CEO mooring deployment
Sister mooring of GEO: the Chukchi Ecosystem Observatory (CEO) being deployed [credit: Seth Danielson]

Current GEO

The M.J. Murdock Charitable Trust funded the University of Alaska Fairbanks (UAF) to construct a moored Gulf of Alaska Ecosystem Observatory (GEO) in late 2017. Consequently, in 2018-2019, investigators designed the system, purchased components, assembled the moorings, and finally deployed the moorings in July 2019.

Now, an array of one sub-surface and two surface moorings collects high-resolution biological, physical, and chemical data year-round. Some sensors report data in real-time.

Opportunity

This year, the Murdock Trust is making $42,600 in “seed” funds available to bring new partners into the observatory consortium. As a result, we seek short proposals by UAF-based researchers for innovative new observing technologies that can be integrated into the upcoming May 2020 GEO deployment. In other words, this effort aims to encourage new partnerships and technology developments that can be applied to ocean observing via moorings in Alaska’s marine environment.

Deployment of GEO sediment trap
Deployment of GEO sediment trap, R/V Sikuliaq July 2019 [credit: Seth Danielson]

Proposal Guidelines

Interested investigators should e-mail a project description (2-page limit, exclusive of references and budget) and itemized budget to sldanielson@alaska.edu prior to Friday, October 4th, 2019. After notification of proposal success (by November 1st), funds will be available immediately and need to be spent before the end of FY20. In all, we anticipate funding 1-3 proposals. However, by stipulation of the Trust, all seed funds must go to UAF-based researchers.

For a full description of the project background and scope, please refer to the Gulf of Alaska Seed Funding Opportunity announcement.

Further information on the GEO can also be found at:

Murdock Trust logo

Expedition Gulf of Alaska Seamounts 2019

The Habitat

In the deep water south of the NGA LTER study area lies an abyssal plain punctuated by volcanic seamounts – mountains that rise from the sea floor. The seamounts provide rocky, hard substrate that makes a good habitat for cold-water corals and sponges. Above the seamounts, ocean currents upwell nutrients to the surface where they feed planktonic organisms. This productivity attracts fish and seabirds to create relative hot-spots of biodiversity in the open ocean.

Map of seamounts in the North Pacific
Bathymetric map of the Gulf of Alaska, showing its deep basin with seamount chains. Grey – land, Green – continental shelf, Yellow – continental slope, Orange – deep basin. [credit: Seth Danielson]

The Expedition

Immediately following the NGA LTER’s RV Sikuliaq cruise, summer 2019, several of our team members are setting out to extended our knowledge of the Gulf of Alaska. Dr. Russ Hopcroft, Dr. Petra Lenz, Dr. Vittoria Roncalli, Heidi Mendoza Islas, Callie Gesmundo, and Caitlin Smoot are joining our collaborators from Microcosm and other expedition members aboard R/V Sikuliaq to investigate seamounts in the Gulf of Alaska from an ecological perspective.

ROV Global Explorer
ROV Global Explorer by Oceaneering has a multitude of imaging and sampling capabilities ideal for deepwater exploration. [credit: Katrin Iken]

The ROV Global Explorer is a critical tool of this expedition. Operated by Oceaneering International, the ROV will take video and still images of organisms on the sea floor; this is the least-invasive method of sampling communities that could be damaged by bottom trawls and other collection methods. ROV Global Explorer will also collect fragile jellyfish by gently enclosing them in a sampler. This avoids the bias of previous sampling towards hard-shelled organisms that survive net tows.

Expedition Gulf of Alaska Seamounts 2019 will even be employing DNA sequencing to identify microbes. Previously, a NOAA Office of Ocean Exploration and Research expedition to the Gulf of Alaska seamounts in 2002 found that the corals there were distinct habitats for microbes.

Follow Along

The NOAA Office of Ocean Exploration and Research has created a website where visitors can follow the Mission Logs. Additionally, educators can also learn more about the expedition purpose and find videos and other classroom materials.

collage of benthic organisms
Benthic collage. [credit: Gulf of Alaska Seamounts 2019 Expedition]

NOAA Office of Ocean Exploration and Research funds this project, with additional ship support by the National Science Foundation and the University of Alaska Fairbanks. Science partners during this mission include scientists from the University of Alaska Fairbanks, the University of Manitoba Canada, the Japan Agency for Marine-Earth Science and Technology (JAMSTEC), the University of Hawaii, University of Barcelona Spain, Lamont Doherty Earth Observatory at Columbia University, the U.S. Fish and Wildlife Service, and a Microcosm film team from Montrose Pictures. The partner for the ROV is Oceaneering.

R/V Sikuliaq Cruise, Summer 2019

satellite chlorophyll
Satellite observed Chlorophyll in the Gulf of Alaska with NGA station locations. [credit: Rachel Potter]

The Summer 2019 cruise aboard R/V Sikuliaq has begun. 2019 is the 50th consecutive year of samples taken at oceanographic station GAK1 (begun December 1970) and the 23nd consecutive year of Seward Line physical-chemical-phytoplankton-zooplankton-seabird sampling. However, many new things are happening too.

Special Studies

Deploying GEO mooring
Deployment of a Gulf Ecosystem Observatory (GEO) mooring aboard R/V Sikuliaq [credit: Seth Danielson]

One of our special studies involves several days of high-resolution sampling of the Copper River discharge plume. We suspect this plume is a source of iron (and other nutrients), therefore driving some of the high productivity in the Gulf of Alaska. To investigate this, we’ll be deploying drifters, making maps of data along the plume edge, and performing incubation growth experiment using both shelf and offshore water.

In addition, the Gulf of Alaska Ecosystem Observatory (GEO) is being deployed this week. During the next year, it will report oceanographic conditions in real-time. The GEO moorings will provide the NGA LTER program with year-long data about conditions in the Gulf, so we can know what is happening even when we can’t be there. Two of the three moorings in the array report real-time data on ocean surface conditions. You can view data from these moorings in the Ocean Data Explorer system provided by AOOS and Axiom Data Science:

Special Communication

2019 NGA REU students
Research Experience for Undergraduates (REU) students Ayanda, Kelsie, Adrianna, Kate, and Delphina on the deck of R/V Sikuliaq on the 4th of July following safety training for bear guards, compressed air grapnel hook cannon demonstrations, and deployment of satellite-tracked drifters. [credit: Seth Danielson]

Five Research Experience for Undergraduate students are also aboard. Most of their time is spent in the labs at UAF and WWU, but for a few weeks, they are experiencing life at sea. They are:

  • Adrianna, working with Russ Hopcroft (UAF),
  • Kate, working with Russ Hopcroft (UAF),
  • Ayanda, working with Seth Danielson (UAF),
  • Delphina, working with Suzanne Strom (WWU), and
  • Kelsie, working with Ana Aguilar-Islas (UAF).

Participants are also updating several blogs about their work.

Internet communication with ships in the Gulf of Alaska is spotty, but these blogs will be updated as often as possible. Katie Gavenus’s completed blog from the Spring cruise gives even more insight into our work.

Jellyfish Make News

Methot net for catching jellyfish
Heidi Mendoza-Islas stands in front of a Methot net used for collecting large jellyfish in the Gulf of Alaska. Photo credit: Loring Schaible.

Lauren Frisch, Public Information Officer for the College of Fisheries and Ocean Sciences, UAF, wrote a news item describing interesting NGA LTER research:
Overlooked jellyfish play big role in Gulf of Alaska.

Yes, until now even the NGA LTER project website has overlooked jellyfish. Instead, our major research components focus on the primary producers and zooplankton that are the base of the food chain. Worse, at sea, jellyfish are often simply a nuisance whose tentacles drape on instruments and clog sensors. However, Heidi Mendoza-Islas, a graduate student in the NGA LTER project, studies the important role that jellyfish play in the Gulf of Alaska ecosystem. Read the article to find out more.

2019 REU Potential Projects

Research Experience for Undergraduates

The ideas for REU projects give an overview of currently interesting research topics at the NGA LTER. They range from physics to chemistry to biology. They involve retrospective analysis of decades worth of data or cutting-edge sampling aboard R/V Sikuliaq. The following are project ideas submitted by UAF investigators. REU students might work one of them, or use them as inspiration to design their own summer project. At the end of the summer, students will present their findings.

REU project with Seth Danielson:

The physics of the Prince William Sound
Prince William Sound (PWS) is a fjord adjacent to the Gulf of Alaska. A shallow sill separates the deep waters within the fjord from the Gulf, which provides sheltered habitat for zooplankton that over-winter there during diapause. Since the Exxon Valdez oil spill, physical oceanographic measurements, such as temperature and salinity, have been taken in PWS. The REU student will assemble these measurements (and the density calculated from them) from multiple sources, and will compute monthly means and time-series of anomalies. Consequently, we can investigate:

  • Do the deep waters in PWS get replaced every year?
  • Are there trends in the temperature and salinity properties?
  • How much do the deep properties vary from one year to the next?

The student will gain experience analyzing physical oceanographic data, and will code algorithms in either MATLAB or Python.

CTD in PWS
CTD sampling in Prince William Sound.

REU project with Ana Aguilar-Islas:

Investigating nutrient cycling in the Northern Gulf of Alaska (NGA)
Along with light, nutrients are essential resources for phytoplankton (unicellular primary producers). In the NGA, the relative availability of macronutrients (i.e., nitrate, phosphate, silicic acid) and the micronutrient iron exert a key control on the phytoplankton community structure, which in turn influences higher trophic level communities.

The REU student will participate in the summer 2019 LTER cruise onboard R/V Sikuliaq in late June/early July. Onboard, they will:

  • Participate in water sampling while collecting macronutrients, and
  • Help perform iron dissolution experiments.

Back in the lab, the student will work with archived nutrient data to investigate inter-annual (2017 and 2018) and seasonal (spring and fall) variability in macronutrient distributions along the Seward Line in the NGA. The student will gain seagoing experience, will learn best-practices in the collection of seawater for nutrient analysis, will gain experience plotting and interpreting oceanographic chemical data.

Incubation Experiment
Performing an incubation experiment aboard R/V Sikuliaq, Spring 2018

REU project with Russ Hopcroft:

Computers help count zooplankton
NGA-LTER scientists collect millions of zooplankton during our net tows in the Gulf of Alaska. These must be identified into species and counted to order to understand the Gulf’s community structure. But that is tedious work. Therefore, we are teaching computers to do it for us. First, a watertight, flat-bed scanner (ZooScan) creates a digital image of a plankton sample from a net tow. Then software isolates individual images and sorts them into taxonomic groups (or particles and detritus). To teach the software how to do the sorting, scientists create a training set and then double-check the output. The REU student will gain lab experience as they scan and sort samples, and then will have the opportunity to look for differences in communities across stations and cruises.

REU project with Russ Hopcroft:

Telling sisters apart
The Gulf of Alaska zooplankton contains many examples of closely related “sibling species”. These species occupy similar niches in the environment, but are slightly different in ways that may create advantages under changing conditions. It is likely that climate change acts by tipping the scales on which sister species are more successful. Unfortunately, zooplankton sampling in previous years did not always differentiate between these sisters. To gain knowledge about how things have changed in the NGA over the years, we hope a detail-oriented REU student will look back through our archived samples. They will help establish the shifting ratio of two keystone copepod species during the first decade of our time series, while they gain experience in microscope work and taxonomic classification. Moreover, we are also open to other small projects that might utilize our historical samples.

REU project: net tow samples
Contents of plankton net samples vary dramatically by station.

Graduate Student Opportunities, 2019

Graduate Student Opportunities at UAF, Starting Fall 2019

Overview

credit: Mette Kaufman

The Northern Gulf of Alaska Long Term Ecological Research (NGA LTER) project announces multiple openings for graduate students at the University of Alaska Fairbanks that will begin Fall, 2019. Specialities include trace metal biogeochemistry, zooplankton ecology or physiology, and high latitude physical oceanography.

This project is part of the NGA LTER site. Therefore, student research will focus on the enhanced production and high environmental variability characteristic of the ocean shelf and slope regions of the NGA. This is a field intensive project with 3 yearly cruises from spring to fall. Projects will include fieldwork on UAF-operated R/V Sikuliaq and smaller regional vessels.

The student will be required to present work at international conferences, and to produce publishable manuscripts. Additionally, they join the national LTER network, with the opportunity of interactions with graduate students at other sites as a member of the LTER Graduate Student Committee. Collaboration with the interdisciplinary LTER research community is essential.

ASM poster session
An ASM poster session in full swing. Nearly 300 posters were presented over 2 sessions.
Credit: Kristen Weiss

Position Details

Applicants must have a strong background in oceanography and/or marine biology, chemistry, or physics, as well as strong written and oral communication skills. Experience participating in field research and/or working in laboratory is desirable. Members of groups under-represented in earth and environmental science are particularly encouraged to apply.

Positions include full stipend, health insurance, and a tuition waiver. Initial acceptance is typically at the Master’s level with possibilities to later expand into a Ph.D., or directly into a Ph.D. for those already at the M.S. level.

Application Deadline

CFOS logo

UAF’s College of Fisheries and Ocean Sciences provides application information. For Fall 2019 admission, UAF must receive applications for graduate admission with all supporting documentation, transcripts and test scores no later than June 1, 2019. Contact the appropriate faculty advisor (see below) before April 15, 2019 for more specific information.

More Information

REU Opportunity, Summer 2019

Research Experience for Undergraduates (REU) Summer 2019

Overview

The Northern Gulf of Alaska Long Term Ecological Research (NGA LTER) project invites undergraduate students to participate in our interdisciplinary oceanographic research. Two or three REU students will join our team from June 3 to August 23, 2019. The application period closes May 7, 2019 March 15, 2019; applicants will be notified soon thereafter.

We seek highly motivated undergraduates with interest in marine science, biology, chemistry, physics, and/or computer science to work with scientists at the University of Alaska Fairbanks. The students’ research will integrate with work currently being done on the NGA LTER ecosystem. Oceanographic research projects include water column characterization measurements, zooplankton studies, particle dynamics studies, data analysis, and numerical oceanographic modeling.

The time period of this REU position includes our summer cruise aboard R/V Sikuliaq. So participation in ship-board research activities is also possible.

Details

Salary

  • $12/hr for a summer full-time position (40 hours per week) over 12 weeks.
  • Discretionary funds may be available to offset housing and transportation costs.

Qualifications

  • Required:
    • College level background in biology, chemistry, physics, computer science, or marine science
    • The ability to carefully follow instructions
    • The ability to successfully work in a team setting
    • Good communication skills.
  • Desired:
    • Upper division status in a B.S. program
    • An interest in continuing scientific research upon graduation

Eligibility

  • Must be a registered student in an undergraduate program.
  • Citizenship or permanent residency in the United States or its possessions is required.

To Apply

To apply, email your resume and a cover letter to Elizabeth Dobbins (eldobbins@alaska.edu). The cover letter should include a brief description of your interest in participating in LTER research. Make sure your resume includes:

  • Contact information: email address and telephone numbers,
  • Applicable completed coursework,
  • Previous laboratory/field experience, and
  • Anticipated graduation date

Preliminary contact with potential mentors is highly suggested. You can find potential mentors and their fields of study on our Personnel Page.

Members of groups under-represented in earth and environmental science are particularly encouraged to apply.

More Information: NGA_LTER_oceanographic_REU
Potential project ideas are also available.

Expanded Teacher at Sea Program

NOAA Teacher at Sea logo

It is with great excitement that we announce our new partnership with NOAA’s Teacher at Sea program!

In 2018, educators participated in each of our three Gulf of Alaska research cruises. Michele Hoffman Trotter, Per Fosstveit, and Mark Van Arsdale filmed creatures, helped with sampling, and developed lesson plans that will introduce students to our Alaskan ecosystem. Altogether, their contributions enabled our LTER program succeed. In general, however, it’s been challenging to connect with teachers and educators who want to get involved in our future cruises.

Mark Van Arsdale
Alaska high school science teacher Mark Van Arsdale on the fall, 2018, NGA LTER cruise

Over the summer, our marine education specialist, Marilyn Sigman, researched existing teacher research experience programs to find the best partner for the NGA LTER. Luckily for us, Mr. Van Arsdale joined us via NOAA’s Teacher at Sea program (TAS), which watered the seed of this new opportunity. As a result, NOAA and CFOS-UAF have made an agreement that will allow more K-12 teachers and marine educators who work in informal settings to take part in our research. In 2019, TAS’s established procedure will recruit teachers to come on our cruises. The educators will also take advantage of TAS infrastructure to post blogs and will participate in the network of TAS alumni. More information about NOAA’s program can be found at the TAS FAQ.

For the 2019 field season, educators will apply through NOAA’s TAS Online Application. We are spreading the word to teachers, informal educators, and administrators, particularly emphasizing educators in Southcentral Alaska.

Interested teachers should apply online before November 30, 2018, for the 2019 Teacher at Sea field season (sample application). Both K-12 teachers and informal educators (such as museum docents) are eligible to apply.

LTER All Scientists’ Meeting, 2018

Investigators with the Northern Gulf of Alaska LTER program will be traveling to Asilomar Conference Grounds in Pacific Grove, California for the 2018 All Scientists’ Meeting, October 1-4. More information will be posted here as the time of the meeting draws near.

Several posters will be presented that relate to NGA LTER research. They include:

Danielson, S. L. (2018, October). It is a finescale line: Acrobat observations from along the Gulf of Alaska hydrographic tightrope (A-F055). Poster presented at the 2018 LTER All Scientists' Meeting, Pacific Grove, California.
Strom, S. L. (2018, October). Site Poster: The Northern Gulf of Alaska (NGA) LTER: Resilience Amidst a Sea of Change (A-K114). Poster presented at the 2018 LTER All Scientists' Meeting, Pacific Grove, California.
Kuletz, K. (2018, October). Seabird distribution relative to biophysical oceanographic properties in North Pacific ecosystems (A-F048). Poster presented at the 2018 LTER All Scientists' Meeting, Pacific Grove, California.

Four Stories about the Spring 2018 Cruise

Lauren Frisch, Public Information Officer for the College of Fisheries and Ocean Sciences, UAF, authored a series of four stories about our May 2018 cruise. Although these stories focus on the on-board capabilities of R/V Sikuliaq, they also include engaging descriptions of our research. Find the links to these stories below:

Sikuliaq expands ways to study Gulf of Alaska ecosystems

Russ Hopcroft at the microscope Studies of zooplankton such as copepods have expanded because of LTER funding and the workspace available aboard R/V Sikuliaq. For instance, CFOS researcher Russ Hopcroft isolates, identifies, photographs, and assesses live animals soon after net tows.
Read full story >>

Submarine ‘airplane’ revolutionizes measurement of seawater content

retrieval of the Acrobat off Sikuliaq's stern CFOS’s Seth Danielson operates an Acrobat instrument, which he described as the underwater version of an airplane. The Acrobat measures temperature and salinity on fine spatial scales. As a result, LTER scientists can track freshwater from the land and investigate how it mixes with ocean water.
Read full story >>

Sikuliaq improves analysis of phytoplankton’s nutrient needs

incubation experiments on phytoplankton CFOS’s Ana Aguilar-Islas brings her own specialized clean sampling instruments onto Sikuliaq so she can quantify nutrients like iron that are essential to phytoplankton. Additionally, Aguilar-Islas and WWU’s Suzanne Strom performed incubation experiments to study how iron availability affects plankton growth.
Read full story >>

Sikuliaq researchers find odd, abundant animal-plant plankton

net tows aboard the Sikuliaq Nutritional flexibility in ciliates and dinoflagellates stabilizes food chains in the Gulf of Alaska. WWU’s Suzanne Strom isolates cells and preserves them soon after they are collected, so she can analyse them at sea and in her onshore lab.
Read full story >>