Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis)
Abstract The North Atlantic right whale (NARW), Eubalaena glacialis, resides primarily on western North Atlantic continental shelves where this endangered species is susceptible to vessel strike and entanglement in fishing gear. Mitigation of these threats is dependent on the ability to predict vari...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Oxford University Press (OUP)
2021
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsab200 https://academic.oup.com/icesjms/article-pdf/78/10/3498/41772910/fsab200.pdf |
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croxfordunivpr:10.1093/icesjms/fsab200 2024-05-19T07:39:52+00:00 Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) Sorochan, K A Plourde, S Baumgartner, M F Johnson, C L Fields, David DFO's Species at Risk Management and Whales Initiative 2021 http://dx.doi.org/10.1093/icesjms/fsab200 https://academic.oup.com/icesjms/article-pdf/78/10/3498/41772910/fsab200.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 78, issue 10, page 3498-3520 ISSN 1054-3139 1095-9289 journal-article 2021 croxfordunivpr https://doi.org/10.1093/icesjms/fsab200 2024-05-02T09:32:03Z Abstract The North Atlantic right whale (NARW), Eubalaena glacialis, resides primarily on western North Atlantic continental shelves where this endangered species is susceptible to vessel strike and entanglement in fishing gear. Mitigation of these threats is dependent on the ability to predict variations in NARW occurrence. North of the Mid-Atlantic Bight, the distribution of NARWs is influenced by their prey, mainly copepods of the genus Calanus. We review factors that promote suitable foraging habitat from areas where NARWs have been observed feeding. We then synthesize our findings within a conceptual framework in which availability (i.e. shallow prey depth), supply, and aggregation of prey occur together to facilitate suitable foraging habitat. By definition, the depth of prey on the shelf is constrained to ≤200 m and other mechanisms may occur locally that further enhance prey availability. Enhanced production of prey occurs in coastal currents, which transport the copepods to NARW foraging areas. Prey concentrating mechanisms are not well-characterized. Information gaps that impede rapid and dynamic prediction of suitable foraging habitat include limited data on the spatial and temporal variation of prey and environmental conditions at local scales (i.e. 0.1–1 km), motility of prey, and diving behaviour of NARWs. Article in Journal/Newspaper Eubalaena glacialis North Atlantic North Atlantic right whale Copepods Oxford University Press ICES Journal of Marine Science |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract The North Atlantic right whale (NARW), Eubalaena glacialis, resides primarily on western North Atlantic continental shelves where this endangered species is susceptible to vessel strike and entanglement in fishing gear. Mitigation of these threats is dependent on the ability to predict variations in NARW occurrence. North of the Mid-Atlantic Bight, the distribution of NARWs is influenced by their prey, mainly copepods of the genus Calanus. We review factors that promote suitable foraging habitat from areas where NARWs have been observed feeding. We then synthesize our findings within a conceptual framework in which availability (i.e. shallow prey depth), supply, and aggregation of prey occur together to facilitate suitable foraging habitat. By definition, the depth of prey on the shelf is constrained to ≤200 m and other mechanisms may occur locally that further enhance prey availability. Enhanced production of prey occurs in coastal currents, which transport the copepods to NARW foraging areas. Prey concentrating mechanisms are not well-characterized. Information gaps that impede rapid and dynamic prediction of suitable foraging habitat include limited data on the spatial and temporal variation of prey and environmental conditions at local scales (i.e. 0.1–1 km), motility of prey, and diving behaviour of NARWs. |
author2 |
Fields, David DFO's Species at Risk Management and Whales Initiative |
format |
Article in Journal/Newspaper |
author |
Sorochan, K A Plourde, S Baumgartner, M F Johnson, C L |
spellingShingle |
Sorochan, K A Plourde, S Baumgartner, M F Johnson, C L Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) |
author_facet |
Sorochan, K A Plourde, S Baumgartner, M F Johnson, C L |
author_sort |
Sorochan, K A |
title |
Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) |
title_short |
Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) |
title_full |
Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) |
title_fullStr |
Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) |
title_full_unstemmed |
Availability, supply, and aggregation of prey ( Calanusspp.) in foraging areas of the North Atlantic right whale ( Eubalaena glacialis) |
title_sort |
availability, supply, and aggregation of prey ( calanusspp.) in foraging areas of the north atlantic right whale ( eubalaena glacialis) |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/icesjms/fsab200 https://academic.oup.com/icesjms/article-pdf/78/10/3498/41772910/fsab200.pdf |
genre |
Eubalaena glacialis North Atlantic North Atlantic right whale Copepods |
genre_facet |
Eubalaena glacialis North Atlantic North Atlantic right whale Copepods |
op_source |
ICES Journal of Marine Science volume 78, issue 10, page 3498-3520 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsab200 |
container_title |
ICES Journal of Marine Science |
_version_ |
1799479452352118784 |