Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders
Abstract Recent summer surveys of the northeastern Chukchi Sea found pelagic fishes were dominated by large numbers of age-0 Arctic cod (Boreogadus saida, Gadidae) and walleye pollock (Gadus chalcogrammus, Gadidae), while adult fishes were comparatively scarce. The source and fate of these young fis...
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2023
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsad024 https://academic.oup.com/icesjms/article-pdf/80/4/987/50384869/fsad024.pdf |
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croxfordunivpr:10.1093/icesjms/fsad024 2024-04-07T07:48:59+00:00 Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders Levine, R M De Robertis, A Grünbaum, D Wilson, C D Wieczorek, Alina North Pacific Research Board Bureau of Ocean Energy Management Office of Naval Research National Oceanic and Atmospheric Administration University of Alaska Fairbanks U.S. Fish and Wildlife Service National Science Foundation 2023 http://dx.doi.org/10.1093/icesjms/fsad024 https://academic.oup.com/icesjms/article-pdf/80/4/987/50384869/fsad024.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 80, issue 4, page 987-1001 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2023 croxfordunivpr https://doi.org/10.1093/icesjms/fsad024 2024-03-08T02:58:10Z Abstract Recent summer surveys of the northeastern Chukchi Sea found pelagic fishes were dominated by large numbers of age-0 Arctic cod (Boreogadus saida, Gadidae) and walleye pollock (Gadus chalcogrammus, Gadidae), while adult fishes were comparatively scarce. The source and fate of these young fishes remain unclear, as sampling in this region is impeded by seasonal ice cover much of the year. Seafloor-mounted echosounders were deployed at three locations in the northeastern Chukchi Sea from 2017 to 2019 to determine the movement and seasonal variability of these age-0 gadids. These observations indicated that the abundance of pelagic fishes and community composition on the Chukchi Sea shelf were highly variable on seasonal time scales, with few fish present in winter. Tracking indicated that fish movements were strongly correlated with local currents. Fishes were primarily displaced to the northeast in summer and fall, with periodic reversals towards the southwest driven by changes in regional wind patterns. The flux of fishes past the moorings indicated that the prevailing northward currents transport a large proportion of the age-0 pelagic fishes present on the Chukchi shelf in summer to the northeast by fall, leading to relatively low abundances of age-1+fishes in this environment. Article in Journal/Newspaper Arctic cod Arctic Boreogadus saida Chukchi Chukchi Sea Oxford University Press Arctic Chukchi Sea Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) ICES Journal of Marine Science |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Levine, R M De Robertis, A Grünbaum, D Wilson, C D Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Recent summer surveys of the northeastern Chukchi Sea found pelagic fishes were dominated by large numbers of age-0 Arctic cod (Boreogadus saida, Gadidae) and walleye pollock (Gadus chalcogrammus, Gadidae), while adult fishes were comparatively scarce. The source and fate of these young fishes remain unclear, as sampling in this region is impeded by seasonal ice cover much of the year. Seafloor-mounted echosounders were deployed at three locations in the northeastern Chukchi Sea from 2017 to 2019 to determine the movement and seasonal variability of these age-0 gadids. These observations indicated that the abundance of pelagic fishes and community composition on the Chukchi Sea shelf were highly variable on seasonal time scales, with few fish present in winter. Tracking indicated that fish movements were strongly correlated with local currents. Fishes were primarily displaced to the northeast in summer and fall, with periodic reversals towards the southwest driven by changes in regional wind patterns. The flux of fishes past the moorings indicated that the prevailing northward currents transport a large proportion of the age-0 pelagic fishes present on the Chukchi shelf in summer to the northeast by fall, leading to relatively low abundances of age-1+fishes in this environment. |
author2 |
Wieczorek, Alina North Pacific Research Board Bureau of Ocean Energy Management Office of Naval Research National Oceanic and Atmospheric Administration University of Alaska Fairbanks U.S. Fish and Wildlife Service National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Levine, R M De Robertis, A Grünbaum, D Wilson, C D |
author_facet |
Levine, R M De Robertis, A Grünbaum, D Wilson, C D |
author_sort |
Levine, R M |
title |
Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders |
title_short |
Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders |
title_full |
Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders |
title_fullStr |
Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders |
title_full_unstemmed |
Transport-driven seasonal abundance of pelagic fishes in the Chukchi Sea observed with seafloor-mounted echosounders |
title_sort |
transport-driven seasonal abundance of pelagic fishes in the chukchi sea observed with seafloor-mounted echosounders |
publisher |
Oxford University Press (OUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/icesjms/fsad024 https://academic.oup.com/icesjms/article-pdf/80/4/987/50384869/fsad024.pdf |
long_lat |
ENVELOPE(-169.167,-169.167,70.550,70.550) |
geographic |
Arctic Chukchi Sea Chukchi Shelf |
geographic_facet |
Arctic Chukchi Sea Chukchi Shelf |
genre |
Arctic cod Arctic Boreogadus saida Chukchi Chukchi Sea |
genre_facet |
Arctic cod Arctic Boreogadus saida Chukchi Chukchi Sea |
op_source |
ICES Journal of Marine Science volume 80, issue 4, page 987-1001 ISSN 1054-3139 1095-9289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsad024 |
container_title |
ICES Journal of Marine Science |
_version_ |
1795663045772443648 |