Phytoplankton and microzooplankton samples are housed at Shannon Point Marine Center in Anacortes, WA. They are collected from the upper 50 meters via niskin bottles on a CTD rosette and gently siphoned (with pre-rinsed silicone tubing) into glass bottles containing acid Lugol’s (5% final concentration) or borate-buffered formalin (2% final concentration). Phytoplankton and microzooplankton are denoted as 'Plankton' in the Sample Type column.

Sample descriptor column key:

• Preservative
  > F = Formalin
  > L = Lugol's

Zooplankton samples are housed at the University of Alaska Fairbanks, College of Fisheries and Ocean Sciences in Fairbanks, AK.  Zooplankton are collected throughout the water column using a vertically hauled Quadnet with four 25 cm diameter net frames (CVQ), obliquely (MNT) and vertically (MNV) hauled Hydrobios Midi-Multinets, obliquely hauled paired 60 cm diamter Bongo frames (BON), and an obliquely hauled 1 m² Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS; MOC).

Sample descriptor column key:
Mesh Size - Gear Type - Preservative

• Mesh Size
  > ### µm
• Gear Type
  > BON = Oblique Bongo Frame
  > CVQ = Vertical Quadnet
  > MNT = Oblique Multinet
  > MNV = Vertical Multinet
  > MOC = Oblique MOCNESS
• Preservative
  > E = Ethanol
  > F = Formalin

Genomic DNA (gDNA) samples are housed at the University of Alaska Fairbanks, College of Fisheries and Ocean Sciences in Fairbanks, AK. They were collected via niskin bottles on a CTD rosette from depths ranging from the surface to 5 m above the bottom. Niskin bottles were sampled with pre-rinsed silicone tubing into an acid-cleaned carboy. 1-5 L of whole seawater was filtered onto a 0.2 micron sterivex filter and stored at -80°C until extraction. Filters were extracted for gDNA and stored in nuclease-free water at -80°C.

Sample descriptor column key:

• gDNA Extraction
  > E = Extracted
  > U = Unextracted