Contribution of Calanus to the mesozooplankton biomass in the Barents Sea
Copepods from the genus Calanus are crucial prey for fish, seabirds and mammals in the Nordic and Barents Sea ecosystems. The objective of this study is to determine the contribution of Calanus species to the mesozooplankton biomass in the Barents Sea. We analyse an extensive dataset of Calanus finm...
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2018
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Online Access: | http://hdl.handle.net/1956/19658 https://doi.org/10.1093/icesjms/fsx221 |
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ftunivbergen:oai:bora.uib.no:1956/19658 2023-05-15T14:58:34+02:00 Contribution of Calanus to the mesozooplankton biomass in the Barents Sea Aarflot, Johanna Myrseth Skjoldal, Hein Rune Dalpadado, Padmini Skern-Mauritzen, Mette 2018 application/pdf http://hdl.handle.net/1956/19658 https://doi.org/10.1093/icesjms/fsx221 eng eng Oxford University Press Three-dimensional zooplankton distributions seen through the lens of fish in the Barents Sea urn:issn:1054-3139 http://hdl.handle.net/1956/19658 https://doi.org/10.1093/icesjms/fsx221 cristin:1550721 Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright International Council for the Exploration of the Sea 2017 ICES Journal of Marine Science 75 7 2342-2354 Peer reviewed Journal article 2018 ftunivbergen https://doi.org/10.1093/icesjms/fsx221 2023-03-14T17:41:44Z Copepods from the genus Calanus are crucial prey for fish, seabirds and mammals in the Nordic and Barents Sea ecosystems. The objective of this study is to determine the contribution of Calanus species to the mesozooplankton biomass in the Barents Sea. We analyse an extensive dataset of Calanus finmarchicus, Calanus glacialis, and Calanus hyperboreus, collected at various research surveys over a 30-year period. Our results show that the Calanus species are a main driver of variation in the mesozooplankton biomass in the Barents Sea, and constitutes around 80% of the total. The proportion of Calanus decreases at low zooplankton biomass, possibly due to a combination of advective processes (low C. finmarchicus in winter) and size selective foraging. Though the Calanus species co-occur in most regions, C. glacialis dominates in the Arctic water masses, while C. finmarchicus dominates in Atlantic waters. The larger C. hyperboreus has considerably lower biomass in the Barents Sea than the other Calanus species. Stages CIV and CV have the largest contribution to Calanus species biomass, whereas stages CI-CIII have an overall low impact on the biomass. In the western area of the Barents Sea, we observe indications of an ongoing borealization of the zooplankton community, with a decreasing proportion of the Arctic C. glacialis over the past 20 years. Atlantic C. finmarchicus have increased during the same period. publishedVersion Article in Journal/Newspaper Arctic Barents Sea Calanus finmarchicus Calanus glacialis Calanus hyperboreus Zooplankton Copepods University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Barents Sea ICES Journal of Marine Science 75 7 2342 2354 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Copepods from the genus Calanus are crucial prey for fish, seabirds and mammals in the Nordic and Barents Sea ecosystems. The objective of this study is to determine the contribution of Calanus species to the mesozooplankton biomass in the Barents Sea. We analyse an extensive dataset of Calanus finmarchicus, Calanus glacialis, and Calanus hyperboreus, collected at various research surveys over a 30-year period. Our results show that the Calanus species are a main driver of variation in the mesozooplankton biomass in the Barents Sea, and constitutes around 80% of the total. The proportion of Calanus decreases at low zooplankton biomass, possibly due to a combination of advective processes (low C. finmarchicus in winter) and size selective foraging. Though the Calanus species co-occur in most regions, C. glacialis dominates in the Arctic water masses, while C. finmarchicus dominates in Atlantic waters. The larger C. hyperboreus has considerably lower biomass in the Barents Sea than the other Calanus species. Stages CIV and CV have the largest contribution to Calanus species biomass, whereas stages CI-CIII have an overall low impact on the biomass. In the western area of the Barents Sea, we observe indications of an ongoing borealization of the zooplankton community, with a decreasing proportion of the Arctic C. glacialis over the past 20 years. Atlantic C. finmarchicus have increased during the same period. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Aarflot, Johanna Myrseth Skjoldal, Hein Rune Dalpadado, Padmini Skern-Mauritzen, Mette |
spellingShingle |
Aarflot, Johanna Myrseth Skjoldal, Hein Rune Dalpadado, Padmini Skern-Mauritzen, Mette Contribution of Calanus to the mesozooplankton biomass in the Barents Sea |
author_facet |
Aarflot, Johanna Myrseth Skjoldal, Hein Rune Dalpadado, Padmini Skern-Mauritzen, Mette |
author_sort |
Aarflot, Johanna Myrseth |
title |
Contribution of Calanus to the mesozooplankton biomass in the Barents Sea |
title_short |
Contribution of Calanus to the mesozooplankton biomass in the Barents Sea |
title_full |
Contribution of Calanus to the mesozooplankton biomass in the Barents Sea |
title_fullStr |
Contribution of Calanus to the mesozooplankton biomass in the Barents Sea |
title_full_unstemmed |
Contribution of Calanus to the mesozooplankton biomass in the Barents Sea |
title_sort |
contribution of calanus to the mesozooplankton biomass in the barents sea |
publisher |
Oxford University Press |
publishDate |
2018 |
url |
http://hdl.handle.net/1956/19658 https://doi.org/10.1093/icesjms/fsx221 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Calanus finmarchicus Calanus glacialis Calanus hyperboreus Zooplankton Copepods |
genre_facet |
Arctic Barents Sea Calanus finmarchicus Calanus glacialis Calanus hyperboreus Zooplankton Copepods |
op_source |
ICES Journal of Marine Science 75 7 2342-2354 |
op_relation |
Three-dimensional zooplankton distributions seen through the lens of fish in the Barents Sea urn:issn:1054-3139 http://hdl.handle.net/1956/19658 https://doi.org/10.1093/icesjms/fsx221 cristin:1550721 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright International Council for the Exploration of the Sea 2017 |
op_doi |
https://doi.org/10.1093/icesjms/fsx221 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
7 |
container_start_page |
2342 |
op_container_end_page |
2354 |
_version_ |
1766330708929806336 |