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Trawl Catch and Species Abundance from the 2019 Gulf of Alaska International Year of the Salmon Expedition

Dataset homepage

Citation

Neville, C., Esenkulova, S., Weitkamp, L., Urawa, S., Waters, C., & Somov, A. (2021). Trawl Catch and Species Abundance from the 2019 Gulf of Alaska International Year of the Salmon Expedition [Data set]. North Pacific Anadromous Fish Commission. https://doi.org/10.21966/DPHZ-AS73 accessed via GBIF.org on 2023-09-30.

Description

Fish species abundance and species-specific length and weight data was collected in the Gulf of Alaska using a midwater trawl net. These data were collected as part of the International Year of the Salmon (IYS) High Seas Expedition conducted in February and March 2019, to further improve the understanding of factors impacting salmon marine winter survival. A total of 64 tows were conducted, and for each tow the total species-specific weight and total (species-specific) catch numbers were recorded. This dataset only contains taxa that were identified to a species level, omitting some Aequorea, Salpa, Gonatidae, Calycopsis, Paralepididae and Ctenophora observations. For the full dataset, it is recommended to contact the data provider. Additionally, for some species individual biometrics were recorded, such as length, wet weight, sex and age class (maturation stage) where possible. The data collected from these trawls aims to improve our understanding of the food web structure.

Sampling Description

Study Extent

A total of 64 tows were conducted throughout the Gulf of Alaska between February 19 and March 16 as part of the International Year of the Salmon High Seas Expedition.

Sampling

To further improve the understanding of factors impacting salmon marine winter survival, a total of 64 midwater trawls were conducted (trawl opening ~ 30 x 40 meter). Total species-specific catch numbers and weight were recorded. Taxa were identified to the lowest taxonomic rank possible. For some species the individual biometrics were recorded, such as length (fork, total, standard, mantle or bell diameter), wet weight, sex, and maturation stage. In addition, DNA samples, otoliths, muscle tissue, scales and live/gonad data of salmonids were collected for further analysis in Alaskan and UBC labs. The data collected from the trawls aim to improve our understanding of the food web structure.

Method steps

  1. Taxonomic records were identified to the lowest taxonomic rank possible. Additionally, for some species some individual biometrics were recorded, such as (fork, total, standard and/or mantle) length, weight, sex and age class. Furthermore for salmonids, DNA samples, otoliths, muscle tissue, scales and liver/gonad data were collected for further analysis in Alaskan and UBC labs.

Taxonomic Coverages

Geographic Coverages

Gulf of Alaska

Bibliographic Citations

Contacts

Chrys Neville
originator
position: Research Biologist
Fisheries and Oceans Canada
CA
email: chrys.neville@dfo-mpo.gc.ca
Svetlana Esenkulova
originator
position: Biologist
Pacific Salmon Foundation
CA
Laurie Weitkamp
originator
position: Research Fisheries Biologist
National Oceanic and Atmospheric Association
US
Shigehiko Urawa
originator
position: Fisheries Biologist
Hokkaido National Research Institute
JP
Charlie Waters
originator
position: Research Fisheries Biologist
National Oceanic and Atmospheric Association
US
Aleksey Somov
originator
position: Fisheries Biologist
Russian Federal Fisheries Research Institute for Fisheries and Oceanography
RU
Chrys Neville
metadata author
position: Research Biologist
Fisheries and Oceans Canada
CA
email: chrys.neville@dfo-mpo.gc.ca
Tim van der Stap
distributor
position: Research Technician
Hakai Institute
Hakai Institute PO Box 25039
Campbell River
V9W 0B7
British Columbia
CA
email: tim.vanderstap@hakai.org
Brett Johnson
distributor
position: Research Technician
Hakai Institute
Hakai Institute PO Box 25039
Campbell River
V9W 0B7
British Columbia
CA
email: brett.johnson@hakai.org
userId: http://orcid.org/0000-0001-9317-0364
Chrys Neville
administrative point of contact
position: Research Biologist
Fisheries and Oceans Canada
CA
email: chrys.neville@dfo-mpo.gc.ca
Svetlana Esenkulova
administrative point of contact
position: Biologist
Pacific Salmon Foundation
CA
email: svesen@uvic.ca
Laurie Weitkamp
administrative point of contact
position: Research Fisheries Biologist
National Oceanic and Atmospheric Association
US
email: laurie.weitkamp@noaa.gov
Shigehiko Urawa
administrative point of contact
position: Fisheries Biologist
Hokkaido National Research Institute
JP
email: urawa@affrc.go.jp
Charlie Waters
administrative point of contact
position: Research Fisheries Biologist
National Oceanic and Atmospheric Association
US
email: charlie.waters@noaa.gov
Aleksey Somov
administrative point of contact
position: Fisheries Biologist
Russian Federal Fisheries Research Institute for Fisheries and Oceanography
RU
email: alekseysomoff@gmail.com
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