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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, Deborah, Watkins, J. and Naganobu, M. 2004, Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean, Deep-sea research. Part II, Topical studies in oceanography, vol. 51, no. 12-13, pp. 1397-1409, doi: 10.1016/j.dsr2.2004.06.008.

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Title Biomass and energy transfer to baleen whales in the South Atlantic sector of the Southern Ocean
Author(s) Reilly, S.
Hedley, S.
Borberg, J.
Hewitt, R.
Thiele, Deborah
Watkins, J.
Naganobu, M.
Journal name Deep-sea research. Part II, Topical studies in oceanography
Volume number 51
Issue number 12-13
Start page 1397
End page 1409
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2004-06
ISSN 0967-0645
Summary 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.
Notes CCAMLR 2000 Survey: a multinational, multi-ship biological oceanography survey of the Atlantic sector of the Southern Ocean
Language eng
DOI 10.1016/j.dsr2.2004.06.008
Field of Research 050209 Natural Resource Management
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2008, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30008739

Document type: Journal Article
Collection: School of Ecology and Environment
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