Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic
Abstract Recent warming in the Barents Sea has led to changes in the spatial distribution of both zooplankton and fish, with boreal communities expanding northwards. A similar northward expansion has been observed in several rorqual species that migrate into northern waters to take advantage of high...
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2021
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crspringernat:10.1007/s00300-021-02835-2 2023-05-15T15:00:59+02:00 Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic Solvang, Hiroko K. Haug, Tore Knutsen, Tor Gjøsæter, Harald Bogstad, Bjarte Hartvedt, Siri Øien, Nils Lindstrøm, Ulf Research Council of Norway Institute of Marine Resaerch Institute Of Marine Research 2021 http://dx.doi.org/10.1007/s00300-021-02835-2 http://link.springer.com/content/pdf/10.1007/s00300-021-02835-2.pdf http://link.springer.com/article/10.1007/s00300-021-02835-2/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Polar Biology volume 44, issue 4, page 761-782 ISSN 0722-4060 1432-2056 General Agricultural and Biological Sciences journal-article 2021 crspringernat https://doi.org/10.1007/s00300-021-02835-2 2022-01-04T12:48:06Z Abstract Recent warming in the Barents Sea has led to changes in the spatial distribution of both zooplankton and fish, with boreal communities expanding northwards. A similar northward expansion has been observed in several rorqual species that migrate into northern waters to take advantage of high summer productivity, hence feeding opportunities. Based on ecosystem surveys conducted during August–September in 2014–2017, we investigated the spatial associations among the three rorqual species of blue, fin, and common minke whales, the predatory fish Atlantic cod, and their main prey groups (zooplankton, 0-group fish, Atlantic cod, and capelin) in Arctic Ocean waters to the west and north of Svalbard. During the surveys, whale sightings were recorded by dedicated whale observers on the bridge of the vessel, whereas the distribution and abundance of cod and prey species were assessed using trawling and acoustic methods. Based on existing knowledge on the dive habits of these rorquals, we divided our analyses into two depth regions: the upper 200 m of the water column and waters below 200 m. Since humpback whales were absent in the area in 2016 and 2017, they were not included in the subsequent analyses of spatial association. No association or spatial overlap between fin and blue whales and any of the prey species investigated was found, while associations and overlaps were found between minke whales and zooplankton/0-group fish in the upper 200 m and between minke whales and Atlantic cod at depths below 200 m. A prey detection range of more than 10 km was suggested for minke whales in the upper water layers. Article in Journal/Newspaper Arctic Arctic Ocean atlantic cod Barents Sea Polar Biology Svalbard Zooplankton Springer Nature (via Crossref) Arctic Arctic Ocean Barents Sea Rorqual ENVELOPE(-62.311,-62.311,-65.648,-65.648) Svalbard Polar Biology 44 4 761 782 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Agricultural and Biological Sciences |
spellingShingle |
General Agricultural and Biological Sciences Solvang, Hiroko K. Haug, Tore Knutsen, Tor Gjøsæter, Harald Bogstad, Bjarte Hartvedt, Siri Øien, Nils Lindstrøm, Ulf Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic |
topic_facet |
General Agricultural and Biological Sciences |
description |
Abstract Recent warming in the Barents Sea has led to changes in the spatial distribution of both zooplankton and fish, with boreal communities expanding northwards. A similar northward expansion has been observed in several rorqual species that migrate into northern waters to take advantage of high summer productivity, hence feeding opportunities. Based on ecosystem surveys conducted during August–September in 2014–2017, we investigated the spatial associations among the three rorqual species of blue, fin, and common minke whales, the predatory fish Atlantic cod, and their main prey groups (zooplankton, 0-group fish, Atlantic cod, and capelin) in Arctic Ocean waters to the west and north of Svalbard. During the surveys, whale sightings were recorded by dedicated whale observers on the bridge of the vessel, whereas the distribution and abundance of cod and prey species were assessed using trawling and acoustic methods. Based on existing knowledge on the dive habits of these rorquals, we divided our analyses into two depth regions: the upper 200 m of the water column and waters below 200 m. Since humpback whales were absent in the area in 2016 and 2017, they were not included in the subsequent analyses of spatial association. No association or spatial overlap between fin and blue whales and any of the prey species investigated was found, while associations and overlaps were found between minke whales and zooplankton/0-group fish in the upper 200 m and between minke whales and Atlantic cod at depths below 200 m. A prey detection range of more than 10 km was suggested for minke whales in the upper water layers. |
author2 |
Research Council of Norway Institute of Marine Resaerch Institute Of Marine Research |
format |
Article in Journal/Newspaper |
author |
Solvang, Hiroko K. Haug, Tore Knutsen, Tor Gjøsæter, Harald Bogstad, Bjarte Hartvedt, Siri Øien, Nils Lindstrøm, Ulf |
author_facet |
Solvang, Hiroko K. Haug, Tore Knutsen, Tor Gjøsæter, Harald Bogstad, Bjarte Hartvedt, Siri Øien, Nils Lindstrøm, Ulf |
author_sort |
Solvang, Hiroko K. |
title |
Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic |
title_short |
Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic |
title_full |
Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic |
title_fullStr |
Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic |
title_full_unstemmed |
Distribution of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic |
title_sort |
distribution of rorquals and atlantic cod in relation to their prey in the norwegian high arctic |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s00300-021-02835-2 http://link.springer.com/content/pdf/10.1007/s00300-021-02835-2.pdf http://link.springer.com/article/10.1007/s00300-021-02835-2/fulltext.html |
long_lat |
ENVELOPE(-62.311,-62.311,-65.648,-65.648) |
geographic |
Arctic Arctic Ocean Barents Sea Rorqual Svalbard |
geographic_facet |
Arctic Arctic Ocean Barents Sea Rorqual Svalbard |
genre |
Arctic Arctic Ocean atlantic cod Barents Sea Polar Biology Svalbard Zooplankton |
genre_facet |
Arctic Arctic Ocean atlantic cod Barents Sea Polar Biology Svalbard Zooplankton |
op_source |
Polar Biology volume 44, issue 4, page 761-782 ISSN 0722-4060 1432-2056 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00300-021-02835-2 |
container_title |
Polar Biology |
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44 |
container_issue |
4 |
container_start_page |
761 |
op_container_end_page |
782 |
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1766333043942883328 |