Zooplankton densities collected from a seasonally hypoxic fjord (Hood Canal, Salish Sea, USA) on 2012-2013 cruises

Julie E. Keister; Timothy Essington; John K. Horne; Sandra Parker-Stetter; BethElLee Herrmann; Lingbo Li; Emilio Mayorga; Amanda Winans

doi:10.15468/a7upu6

Zooplankton densities collected from a seasonally hypoxic fjord (Hood Canal, Salish Sea, USA) on 2012-2013 cruises

Citation

Keister J E, Essington T, Horne J K, Parker-Stetter S, Herrmann B, Li L, Mayorga E, Winans A (2024). Zooplankton densities collected from a seasonally hypoxic fjord (Hood Canal, Salish Sea, USA) on 2012-2013 cruises. Version 1.2. United States Geological Survey. Samplingevent dataset. https://doi.org/10.15468/a7upu6 accessed via GBIF.org on 2024-12-12.

Description

This zooplankton dataset was collected as part of a larger study examining the effects of hypoxia on species composition, distributions, and predator-prey interactions between zooplankton and fish in a pelagic marine ecosystem. Day/night paired zooplankton sampling was conducted in Hood Canal, Puget Sound (Washington state, US), during 10 monthly cruises from June to October, 2012 and 2013, at five stations: Dabob, Union, Hoodsport, Duckabush and Twanoh. An obliquely towed multi-net system was used to collect depth stratified and full water column samples. For the depth-stratified sampling, depth layers were based on the dissolved oxygen profiles from CTD casts. In the laboratory, zooplankton were quantitatively subsampled and microscopically counted, with zooplankton densities calculated. All individuals were identified to species or larger taxonomic grouping, and by life stages for some species, within each sample. This dataset as published with OBIS incorporates corrections and updates to a dataset previously published on BCO-DMO.

Sampling Description

Study Extent

Sampling conducted at 5 stations in Hood Canal, Puget Sound, Washington state, US. These stations are Dabob, Union, Hoodsport, Duckabush, and Twanoh. Day and night paired sampling took place during 10 monthly cruises from June to October, 2012 and 2013, spanning the period from 2012-06-11 to 2013-10-04.

Sampling

We conducted day/night paired zooplankton sampling in Hood Canal in June-October, 2012 and 2013. Sampling stations included Dabob, Union, Hoodsport, Duckabush, and Twanoh. A Hydrobios MultiNet (five-net capacity) was used to collect depth-stratified and full water column samples. Net mouth area was 0.25 m2; 200- and 335-um mesh nets were used to sample different size zooplankton. Nets were towed obliquely at 1-2.5 knots (slower tows for smaller mesh size), with inner and outer flow meters to measure water volume sampled. For the depth-stratified sampling, depth layers were based on the dissolved oxygen profiles from CTD casts. In the laboratory, zooplankton were quantitatively subsampled and microscopically counted. All individuals were identified to species or larger taxonomic grouping, and by life stages for some species, within each sample.

Method steps

The starting point data file for OBIS Darwin Core alignment was obtained from a previous data submission to BCO-DMO available at doi:10.1575/1912/bco-dmo.682074.1. After downloading the file in csv format from the BCO-DMO ERDDAP server (https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_682074.csv), we performed the following revisions and corrections, based on more recent information from the PI's lab: - Assigned the correct timezone: PDT (local time, UTC-7), rather than UTC. - Populated missing times for 6 sampling events. - Corrected multiple life history stage entries. - Updated or corrected several taxa assignments. - Corrected a zooplankton density value. - Identified duplicate entries where only the zooplankton density values differed. In such cases, reduced the duplicates to single entries (17) with the mean density from the duplicate pairs.

Additional info

The publication of this dataset in OBIS was supported by the Northwest Association of Networked Ocean Observing Systems (NANOOS, https://www.nanoos.org), the Regional Association of the national US Integrated Ocean Observing System (IOOS, https://ioos.noaa.gov) for the US Pacific Northwest.

Taxonomic Coverages

N/A

Chordata
rank: phylum
Metridinidae
rank: family
Paracalanidae
rank: family
Mollusca
rank: phylum
Arthropoda
rank: phylum
Hydrozoa
rank: class
Trachymedusae
rank: order
Corycaeidae
rank: family
Euphausiidae
rank: family
Bivalvia
rank: class
Calanidae
rank: family
Calanoida
rank: order
Ostracoda
rank: class
Copepoda
rank: class
Siphonophorae
rank: order
Oithonidae
rank: family
Thecostraca
rank: class
Diphyidae
rank: family
Animalia
rank: kingdom
Euphausiacea
rank: order
Larvacea
rank: class
Clausocalanidae
rank: family
Pteropoda
rank: order
Oncaeidae
rank: family
Annelida
rank: phylum
Rhopalonematidae
rank: family
Polychaeta
rank: class
Cyclopoida
rank: order
Limacinidae
rank: family
Malacostraca
rank: class
Centropagidae
rank: family
Gastropoda
rank: class
Acartiidae
rank: family
Cnidaria
rank: phylum
Bryozoa
rank: phylum

Geographic Coverages

Hood Canal in Puget Sound, Washington State, USA. Puget Sound is part of the Salish Sea.

Bibliographic Citations

Li, L., J.E. Keister, T.E. Essington and J. Newton. 2019. Vertical distributions and abundances of life stages of the euphausiid Euphausia pacifica in relation to oxygen and temperature in a seasonally hypoxic fjord. Journal of Plankton Research 41(2): 188–202, doi:10.1093/plankt/fbz009 - https://doi.org/10.1093/plankt/fbz009
Moriarty, P. E., T. E. Essington, J. K. J. E. Horne, Keister, L. Li, S. L. Parker-Stetter, and M. Sato. 2020. Unexpected food web responses to low dissolved oxygen in an estuarine fjord. Ecological Applications 30(8):e02204. doi:10.1002/eap.2204 - https://doi.org/10.1002/eap.2204

Contacts

Julie E. Keister
originator
position: Professor
University of Washington
US
email: jkeister@u.washington.edu
homepage: https://faculty.washington.edu/jkeister/
userId: https://orcid.org/0000-0002-9385-5889

Timothy Essington
originator
position: Professor
University of Washington
US
email: essing@uw.edu
homepage: https://fish.uw.edu/faculty/tim-essington/
userId: https://orcid.org/0000-0002-9986-7100

John K. Horne
originator
position: Professor
University of Washington
US
email: jhorne@uw.edu
homepage: https://fish.uw.edu/faculty/john-horne/
userId: https://orcid.org/0000-0002-3610-5379

Sandra Parker-Stetter
originator
position: Program Manager
NOAA Alaska Fisheries Science Center
US
email: sandy.parker-stetter@noaa.gov
homepage: https://www.fisheries.noaa.gov/contact/sandra-parker-stetter
userId: https://orcid.org/0000-0001-5866-4975

BethElLee Herrmann
originator
position: Biological Oceanography
University of Washington
US
email: blh1975@uw.edu
homepage: https://www.ocean.washington.edu/home/BethElLee_Herrmann
userId: https://orcid.org/0000-0003-1097-643X

Lingbo Li
originator
position: Fisheries Biologist
Fisheries and Oceans Canada
CA
email: lingbo.li@dfo-mpo.gc.ca
userId: https://orcid.org/0000-0002-1546-1171

Emilio Mayorga
originator
position: Senior Oceanographer
University of Washington
US
email: emiliom@uw.edu
homepage: https://apl.uw.edu/people/profile.php?last_name=Mayorga&first_name=Emilio
userId: https://orcid.org/0000-0003-2574-4623

Amanda Winans
originator
position: Research Scientist
University of Washington
US
email: awinans@uw.edu
homepage: https://www.ocean.washington.edu/home/Amanda%20Winans
userId: https://orcid.org/0000-0002-8093-1694

Julie E. Keister
metadata author
position: Professor
University of Washington
US
email: jkeister@u.washington.edu
homepage: https://faculty.washington.edu/jkeister/
userId: https://orcid.org/0000-0002-9385-5889

Emilio Mayorga
metadata author
position: Senior Oceanographer
University of Washington
US
email: emiliom@uw.edu
homepage: https://apl.uw.edu/people/profile.php?last_name=Mayorga&first_name=Emilio
userId: https://orcid.org/0000-0003-2574-4623

Emilio Mayorga
processor
position: Senior Oceanographer
University of Washington
US
email: emiliom@uw.edu
homepage: https://apl.uw.edu/people/profile.php?last_name=Mayorga&first_name=Emilio
userId: https://orcid.org/0000-0003-2574-4623

John K. Horne
principal investigator
position: Professor
University of Washington
US
email: jhorne@uw.edu
homepage: https://fish.uw.edu/faculty/john-horne/
userId: https://orcid.org/0000-0002-3610-5379

Sandra Parker-Stetter
principal investigator
position: Program Manager
NOAA Alaska Fisheries Science Center
US
email: sandy.parker-stetter@noaa.gov
homepage: https://www.fisheries.noaa.gov/contact/sandra-parker-stetter
userId: https://orcid.org/0000-0001-5866-4975

Timothy Essington
principal investigator
position: Professor
University of Washington
US
email: essing@uw.edu
homepage: https://fish.uw.edu/faculty/tim-essington/
userId: https://orcid.org/0000-0002-9986-7100

Julie E. Keister
principal investigator
position: Professor
University of Washington
US
email: jkeister@u.washington.edu
homepage: https://faculty.washington.edu/jkeister/
userId: https://orcid.org/0000-0002-9385-5889

Julie E. Keister
administrative point of contact
position: Professor
University of Washington
US
email: jkeister@u.washington.edu
homepage: https://faculty.washington.edu/jkeister/
userId: https://orcid.org/0000-0002-9385-5889