Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018
A remarkable early sea-ice reduction event was observed in the northern Bering Sea during 2018. In turn, this unusual hydrographic phenomenon affected several marine trophic levels, resulting in delayed phytoplankton blooms, phytoplankton community changes, and a northward shift of fish stocks. Howe...
Published in: | Frontiers in Marine Science |
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2022
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Online Access: | http://dx.doi.org/10.3389/fmars.2022.808910 https://www.frontiersin.org/articles/10.3389/fmars.2022.808910/full |
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crfrontiers:10.3389/fmars.2022.808910 2024-04-28T07:54:48+00:00 Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 Kimura, Fumihiko Matsuno, Kohei Abe, Yoshiyuki Yamaguchi, Atsushi 2022 http://dx.doi.org/10.3389/fmars.2022.808910 https://www.frontiersin.org/articles/10.3389/fmars.2022.808910/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 9 ISSN 2296-7745 Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography journal-article 2022 crfrontiers https://doi.org/10.3389/fmars.2022.808910 2024-04-08T06:44:39Z A remarkable early sea-ice reduction event was observed in the northern Bering Sea during 2018. In turn, this unusual hydrographic phenomenon affected several marine trophic levels, resulting in delayed phytoplankton blooms, phytoplankton community changes, and a northward shift of fish stocks. However, the response of the zooplankton community remains uncharacterized. Therefore, our study sought to investigate the zooplankton community shifts in the northern Bering Sea during the summers of 2017 and 2018 and evaluate the effects of early sea-ice melt events on the zooplankton community, population structure of large copepods, and copepod production. Five zooplankton communities were identified based on cluster analysis. Further, annual changes in the zooplankton community were identified in the Chirikov Basin. In 2017, the zooplankton community included abundant Pacific copepods transported by the Anadyr water. In 2018, however, the zooplankton community was dominated by small copepods and younger stages of large copepods ( Calanus glacialis/marshallae and Metridia pacifica ), which was likely caused by reproduction delays resulting from the early sea-ice reduction event. These environmental abnormalities increased copepod production; however, this higher zooplankton productivity did not efficiently reach the higher trophic levels. Taken together, our findings demonstrated that zooplankton community structure and production are highly sensitive to the environmental changes associated with early sea-ice reduction (e.g., warm temperatures and food availability). Article in Journal/Newspaper Anadyr Anadyr' Bering Sea Calanus glacialis Sea ice Copepods Frontiers (Publisher) Frontiers in Marine Science 9 |
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topic |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
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Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography Kimura, Fumihiko Matsuno, Kohei Abe, Yoshiyuki Yamaguchi, Atsushi Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 |
topic_facet |
Ocean Engineering Water Science and Technology Aquatic Science Global and Planetary Change Oceanography |
description |
A remarkable early sea-ice reduction event was observed in the northern Bering Sea during 2018. In turn, this unusual hydrographic phenomenon affected several marine trophic levels, resulting in delayed phytoplankton blooms, phytoplankton community changes, and a northward shift of fish stocks. However, the response of the zooplankton community remains uncharacterized. Therefore, our study sought to investigate the zooplankton community shifts in the northern Bering Sea during the summers of 2017 and 2018 and evaluate the effects of early sea-ice melt events on the zooplankton community, population structure of large copepods, and copepod production. Five zooplankton communities were identified based on cluster analysis. Further, annual changes in the zooplankton community were identified in the Chirikov Basin. In 2017, the zooplankton community included abundant Pacific copepods transported by the Anadyr water. In 2018, however, the zooplankton community was dominated by small copepods and younger stages of large copepods ( Calanus glacialis/marshallae and Metridia pacifica ), which was likely caused by reproduction delays resulting from the early sea-ice reduction event. These environmental abnormalities increased copepod production; however, this higher zooplankton productivity did not efficiently reach the higher trophic levels. Taken together, our findings demonstrated that zooplankton community structure and production are highly sensitive to the environmental changes associated with early sea-ice reduction (e.g., warm temperatures and food availability). |
format |
Article in Journal/Newspaper |
author |
Kimura, Fumihiko Matsuno, Kohei Abe, Yoshiyuki Yamaguchi, Atsushi |
author_facet |
Kimura, Fumihiko Matsuno, Kohei Abe, Yoshiyuki Yamaguchi, Atsushi |
author_sort |
Kimura, Fumihiko |
title |
Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 |
title_short |
Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 |
title_full |
Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 |
title_fullStr |
Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 |
title_full_unstemmed |
Effects of Early Sea-Ice Reduction on Zooplankton and Copepod Population Structure in the Northern Bering Sea During the Summers of 2017 and 2018 |
title_sort |
effects of early sea-ice reduction on zooplankton and copepod population structure in the northern bering sea during the summers of 2017 and 2018 |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/fmars.2022.808910 https://www.frontiersin.org/articles/10.3389/fmars.2022.808910/full |
genre |
Anadyr Anadyr' Bering Sea Calanus glacialis Sea ice Copepods |
genre_facet |
Anadyr Anadyr' Bering Sea Calanus glacialis Sea ice Copepods |
op_source |
Frontiers in Marine Science volume 9 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2022.808910 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1797576987290632192 |