Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica
The vertical migration of zooplankton and micronekton (hereafter ‘zooplankton’) has ramifications throughout the food web. Here, we present the first evidence that climate fluctuations affect the vertical migration of zooplankton in the Southern Ocean, based on multi-year acoustic backscatter data f...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/524352/ https://nora.nerc.ac.uk/id/eprint/524352/1/La_2019.pdf https://doi.org/10.1038/s41598-019-46423-1 |
id |
ftnerc:oai:nora.nerc.ac.uk:524352 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:524352 2023-05-15T13:23:38+02:00 Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica La, Hyoung Sul Park, Keyhong Wåhlin, Anna Arrigo, Kevin R. Kim, Dong Seon Yang, Eun Jin Atkinson, Angus Fielding, Sophie Im, Jungho Kim, Tae-Wan Shin, Hyoung Chul Lee, SangHoon Ha, Ho Kyung 2019-07 text http://nora.nerc.ac.uk/id/eprint/524352/ https://nora.nerc.ac.uk/id/eprint/524352/1/La_2019.pdf https://doi.org/10.1038/s41598-019-46423-1 en eng https://nora.nerc.ac.uk/id/eprint/524352/1/La_2019.pdf La, Hyoung Sul; Park, Keyhong; Wåhlin, Anna; Arrigo, Kevin R.; Kim, Dong Seon; Yang, Eun Jin; Atkinson, Angus; Fielding, Sophie orcid:0000-0002-3152-4742 Im, Jungho; Kim, Tae-Wan; Shin, Hyoung Chul; Lee, SangHoon; Ha, Ho Kyung. 2019 Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica. Scientific Reports, 9 (1), 10087. https://doi.org/10.1038/s41598-019-46423-1 <https://doi.org/10.1038/s41598-019-46423-1> cc_by_4 CC-BY Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1038/s41598-019-46423-1 2023-02-04T19:48:50Z The vertical migration of zooplankton and micronekton (hereafter ‘zooplankton’) has ramifications throughout the food web. Here, we present the first evidence that climate fluctuations affect the vertical migration of zooplankton in the Southern Ocean, based on multi-year acoustic backscatter data from one of the deep troughs in the Amundsen Sea, Antarctica. High net primary productivity (NPP) and the annual variation in seasonal ice cover make the Amundsen Sea coastal polynya an ideal site in which to examine how zooplankton behavior responds to climate fluctuations. Our observations show that the timing of the seasonal vertical migration and abundance of zooplankton in the seasonally varying sea ice is correlated with the Southern Annular Mode (SAM) and El Niño Southern Oscillation (ENSO). Zooplankton in this region migrate seasonally and overwinter at depth, returning to the surface in spring. During +SAM/La Niña periods, the at-depth overwintering period is shorter compared to −SAM/El Niño periods, and return to the surface layers starts earlier in the year. These differences may result from the higher sea ice cover and decreased NPP during +SAM/La Niña periods. This observation points to a new link between global climate fluctuations and the polar marine food web. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Sea ice Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Amundsen Sea Scientific Reports 9 1 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The vertical migration of zooplankton and micronekton (hereafter ‘zooplankton’) has ramifications throughout the food web. Here, we present the first evidence that climate fluctuations affect the vertical migration of zooplankton in the Southern Ocean, based on multi-year acoustic backscatter data from one of the deep troughs in the Amundsen Sea, Antarctica. High net primary productivity (NPP) and the annual variation in seasonal ice cover make the Amundsen Sea coastal polynya an ideal site in which to examine how zooplankton behavior responds to climate fluctuations. Our observations show that the timing of the seasonal vertical migration and abundance of zooplankton in the seasonally varying sea ice is correlated with the Southern Annular Mode (SAM) and El Niño Southern Oscillation (ENSO). Zooplankton in this region migrate seasonally and overwinter at depth, returning to the surface in spring. During +SAM/La Niña periods, the at-depth overwintering period is shorter compared to −SAM/El Niño periods, and return to the surface layers starts earlier in the year. These differences may result from the higher sea ice cover and decreased NPP during +SAM/La Niña periods. This observation points to a new link between global climate fluctuations and the polar marine food web. |
format |
Article in Journal/Newspaper |
author |
La, Hyoung Sul Park, Keyhong Wåhlin, Anna Arrigo, Kevin R. Kim, Dong Seon Yang, Eun Jin Atkinson, Angus Fielding, Sophie Im, Jungho Kim, Tae-Wan Shin, Hyoung Chul Lee, SangHoon Ha, Ho Kyung |
spellingShingle |
La, Hyoung Sul Park, Keyhong Wåhlin, Anna Arrigo, Kevin R. Kim, Dong Seon Yang, Eun Jin Atkinson, Angus Fielding, Sophie Im, Jungho Kim, Tae-Wan Shin, Hyoung Chul Lee, SangHoon Ha, Ho Kyung Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica |
author_facet |
La, Hyoung Sul Park, Keyhong Wåhlin, Anna Arrigo, Kevin R. Kim, Dong Seon Yang, Eun Jin Atkinson, Angus Fielding, Sophie Im, Jungho Kim, Tae-Wan Shin, Hyoung Chul Lee, SangHoon Ha, Ho Kyung |
author_sort |
La, Hyoung Sul |
title |
Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica |
title_short |
Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica |
title_full |
Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica |
title_fullStr |
Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica |
title_full_unstemmed |
Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica |
title_sort |
zooplankton and micronekton respond to climate fluctuations in the amundsen sea polynya, antarctica |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/524352/ https://nora.nerc.ac.uk/id/eprint/524352/1/La_2019.pdf https://doi.org/10.1038/s41598-019-46423-1 |
geographic |
Southern Ocean Amundsen Sea |
geographic_facet |
Southern Ocean Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctica Sea ice Southern Ocean |
genre_facet |
Amundsen Sea Antarc* Antarctica Sea ice Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/524352/1/La_2019.pdf La, Hyoung Sul; Park, Keyhong; Wåhlin, Anna; Arrigo, Kevin R.; Kim, Dong Seon; Yang, Eun Jin; Atkinson, Angus; Fielding, Sophie orcid:0000-0002-3152-4742 Im, Jungho; Kim, Tae-Wan; Shin, Hyoung Chul; Lee, SangHoon; Ha, Ho Kyung. 2019 Zooplankton and micronekton respond to climate fluctuations in the Amundsen Sea polynya, Antarctica. Scientific Reports, 9 (1), 10087. https://doi.org/10.1038/s41598-019-46423-1 <https://doi.org/10.1038/s41598-019-46423-1> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-019-46423-1 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766373729797931008 |