Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean
In recent decades, the central Arctic Ocean has been experiencing dramatic decline in sea ice coverage, thickness and extent, which is expected to have a tremendous impact on all levels of Arctic marine life. Here, we analyze the regional and temporal changes in pan-Arctic distribution and populatio...
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Online Access: | https://hdl.handle.net/10037/21950 https://doi.org/10.1111/gcb.15562 |
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ftunivtroemsoe:oai:munin.uit.no:10037/21950 2023-05-15T14:25:17+02:00 Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean Ershova, Elizaveta A. Kosobokova, Ksenia N. Banas, Neil S. Ellingsen, Ingrid Niehoff, Barbara Hildebrandt, Nicole Hirche, Hans-Juergen 2021-02-19 https://hdl.handle.net/10037/21950 https://doi.org/10.1111/gcb.15562 eng eng Wiley Global Change Biology Ershova, Kosobokova, Banas, Ellingsen, Niehoff, Hildebrandt, Hirche. Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean. Global Change Biology. 2021;27(10):2128-2143 FRIDAID 1921606 doi:10.1111/gcb.15562 1354-1013 1365-2486 https://hdl.handle.net/10037/21950 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1111/gcb.15562 2021-08-11T22:53:41Z In recent decades, the central Arctic Ocean has been experiencing dramatic decline in sea ice coverage, thickness and extent, which is expected to have a tremendous impact on all levels of Arctic marine life. Here, we analyze the regional and temporal changes in pan-Arctic distribution and population structure of the key zooplankton species Calanus glacialis and C. hyperboreus in relation to recent changes in ice conditions, based on historical (1993–1998) and recent (2007–2016) zooplankton collections and satellite-based sea ice observations. We found strong correlations between Calanus abundance/population structure and a number of sea ice parameters. These relationships were particularly strong for C. glacialis , with higher numbers being observed at locations with a lower ice concentration, a shorter distance to the ice edge, and more days of open water. Interestingly, early stages of C. hyperboreus followed the same trends, suggesting that these two species substantially overlap in their core distribution area in the Arctic Ocean. Calanus glacialis and C. hyperboreus have been historically classified as shelf versus basin species, yet we conclude that both species can inhabit a wide range of bottom depths and their distribution in the Arctic Ocean is largely shaped by sea ice dynamics. Our data suggest that the core distribution patterns of these key zooplankton are shifting northwards with retreating sea ice and changing climate conditions. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Calanus glacialis Sea ice Zooplankton University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Global Change Biology 27 10 2128 2143 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 Ershova, Elizaveta A. Kosobokova, Ksenia N. Banas, Neil S. Ellingsen, Ingrid Niehoff, Barbara Hildebrandt, Nicole Hirche, Hans-Juergen Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 |
description |
In recent decades, the central Arctic Ocean has been experiencing dramatic decline in sea ice coverage, thickness and extent, which is expected to have a tremendous impact on all levels of Arctic marine life. Here, we analyze the regional and temporal changes in pan-Arctic distribution and population structure of the key zooplankton species Calanus glacialis and C. hyperboreus in relation to recent changes in ice conditions, based on historical (1993–1998) and recent (2007–2016) zooplankton collections and satellite-based sea ice observations. We found strong correlations between Calanus abundance/population structure and a number of sea ice parameters. These relationships were particularly strong for C. glacialis , with higher numbers being observed at locations with a lower ice concentration, a shorter distance to the ice edge, and more days of open water. Interestingly, early stages of C. hyperboreus followed the same trends, suggesting that these two species substantially overlap in their core distribution area in the Arctic Ocean. Calanus glacialis and C. hyperboreus have been historically classified as shelf versus basin species, yet we conclude that both species can inhabit a wide range of bottom depths and their distribution in the Arctic Ocean is largely shaped by sea ice dynamics. Our data suggest that the core distribution patterns of these key zooplankton are shifting northwards with retreating sea ice and changing climate conditions. |
format |
Article in Journal/Newspaper |
author |
Ershova, Elizaveta A. Kosobokova, Ksenia N. Banas, Neil S. Ellingsen, Ingrid Niehoff, Barbara Hildebrandt, Nicole Hirche, Hans-Juergen |
author_facet |
Ershova, Elizaveta A. Kosobokova, Ksenia N. Banas, Neil S. Ellingsen, Ingrid Niehoff, Barbara Hildebrandt, Nicole Hirche, Hans-Juergen |
author_sort |
Ershova, Elizaveta A. |
title |
Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean |
title_short |
Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean |
title_full |
Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean |
title_fullStr |
Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean |
title_full_unstemmed |
Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean |
title_sort |
sea ice decline drives biogeographical shifts of key calanus species in the central arctic ocean |
publisher |
Wiley |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/21950 https://doi.org/10.1111/gcb.15562 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Calanus glacialis Sea ice Zooplankton |
genre_facet |
Arctic Arctic Arctic Ocean Calanus glacialis Sea ice Zooplankton |
op_relation |
Global Change Biology Ershova, Kosobokova, Banas, Ellingsen, Niehoff, Hildebrandt, Hirche. Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean. Global Change Biology. 2021;27(10):2128-2143 FRIDAID 1921606 doi:10.1111/gcb.15562 1354-1013 1365-2486 https://hdl.handle.net/10037/21950 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1111/gcb.15562 |
container_title |
Global Change Biology |
container_volume |
27 |
container_issue |
10 |
container_start_page |
2128 |
op_container_end_page |
2143 |
_version_ |
1766297717320974336 |