Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean
Baleen whales are an important group of predators on Antarctic krill in the Southern Ocean. During the CCAMLR 2000 Survey to estimate the biomass and distribution of Antarctic krill, International Whaling Commission observers carried out a visual line transect survey to estimate the number of baleen...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/12364/ http://www.sciencedirect.com/science/article/pii/S0967064504000876 |
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ftnerc:oai:nora.nerc.ac.uk:12364 2023-05-15T13:45:11+02:00 Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean Reilly, S. Hedley, S. Borberg, J. Hewitt, R. Thiele, D. Watkins, J. Naganobu, M. 2004 http://nora.nerc.ac.uk/id/eprint/12364/ http://www.sciencedirect.com/science/article/pii/S0967064504000876 unknown Elsevier Reilly, S.; Hedley, S.; Borberg, J.; Hewitt, R.; Thiele, D.; Watkins, J.; Naganobu, M. 2004 Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean. Deep-Sea Research Part II, 51 (12-13). 1397-1409. https://doi.org/10.1016/j.dsr2.2004.06.008 <https://doi.org/10.1016/j.dsr2.2004.06.008> Marine Sciences Zoology Ecology and Environment Publication - Article PeerReviewed 2004 ftnerc https://doi.org/10.1016/j.dsr2.2004.06.008 2023-02-04T19:27:55Z Baleen whales are an important group of predators on Antarctic krill in the Southern Ocean. During the CCAMLR 2000 Survey to estimate the biomass and distribution of Antarctic krill, International Whaling Commission observers carried out a visual line transect survey to estimate the number of baleen whales occurring in the survey area. This paper reviews techniques used to estimate krill consumption by baleen whales and in combination with estimates of whale abundance estimates of krill consumption are generated for the South Atlantic sector of the Southern Ocean. This survey estimates that the present populations of whales feeding in this region are likely to consume approximately 1.6 million tonnes, but possibly up to as much as 2.7 million tonnes of krill within the summer season. Although this only represents 4-6% of the estimated krill biomass in the region (and probably less than this percentage of the total annual krill production), the depleted numbers of baleen whales resulting from past or current whaling activities should be taken into account when setting quotas for the commercial exploitation of krill if there is to be a recovery to pre-exploitation biomass levels of baleen whales. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill baleen whales Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Deep Sea Research Part II: Topical Studies in Oceanography 51 12-13 1397 1409 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Zoology Ecology and Environment Reilly, S. Hedley, S. Borberg, J. Hewitt, R. Thiele, D. Watkins, J. Naganobu, M. Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean |
topic_facet |
Marine Sciences Zoology Ecology and Environment |
description |
Baleen whales are an important group of predators on Antarctic krill in the Southern Ocean. During the CCAMLR 2000 Survey to estimate the biomass and distribution of Antarctic krill, International Whaling Commission observers carried out a visual line transect survey to estimate the number of baleen whales occurring in the survey area. This paper reviews techniques used to estimate krill consumption by baleen whales and in combination with estimates of whale abundance estimates of krill consumption are generated for the South Atlantic sector of the Southern Ocean. This survey estimates that the present populations of whales feeding in this region are likely to consume approximately 1.6 million tonnes, but possibly up to as much as 2.7 million tonnes of krill within the summer season. Although this only represents 4-6% of the estimated krill biomass in the region (and probably less than this percentage of the total annual krill production), the depleted numbers of baleen whales resulting from past or current whaling activities should be taken into account when setting quotas for the commercial exploitation of krill if there is to be a recovery to pre-exploitation biomass levels of baleen whales. |
format |
Article in Journal/Newspaper |
author |
Reilly, S. Hedley, S. Borberg, J. Hewitt, R. Thiele, D. Watkins, J. Naganobu, M. |
author_facet |
Reilly, S. Hedley, S. Borberg, J. Hewitt, R. Thiele, D. Watkins, J. Naganobu, M. |
author_sort |
Reilly, S. |
title |
Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean |
title_short |
Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean |
title_full |
Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean |
title_fullStr |
Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean |
title_full_unstemmed |
Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean |
title_sort |
biomass and energy transfer to baleen whales in the south atlantic sector of the southern ocean |
publisher |
Elsevier |
publishDate |
2004 |
url |
http://nora.nerc.ac.uk/id/eprint/12364/ http://www.sciencedirect.com/science/article/pii/S0967064504000876 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill baleen whales Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill baleen whales Southern Ocean |
op_relation |
Reilly, S.; Hedley, S.; Borberg, J.; Hewitt, R.; Thiele, D.; Watkins, J.; Naganobu, M. 2004 Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean. Deep-Sea Research Part II, 51 (12-13). 1397-1409. https://doi.org/10.1016/j.dsr2.2004.06.008 <https://doi.org/10.1016/j.dsr2.2004.06.008> |
op_doi |
https://doi.org/10.1016/j.dsr2.2004.06.008 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
51 |
container_issue |
12-13 |
container_start_page |
1397 |
op_container_end_page |
1409 |
_version_ |
1766215064058068992 |