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Impacts of cetaceans on the structure of Southern Ocean food webs
Citation
Ainley, D and Ballard, G and Blight, LK and Ackley, S and Emslie, ST and Lescroel, A and Olmastroni, S and Townsend, SE and Tynan, CT and Wilson, P and Woehler, E, Impacts of cetaceans on the structure of Southern Ocean food webs, Marine Mammal Science, 26, (2) pp. 482-498. ISSN 0824-0469 (2010) [Letter or Note in Journal]
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The definitive published version is available online at: http://www3.interscience.wiley.com
Official URL: http://www.interscience.wiley.com
DOI: doi:10.1111/j.1748-7692.2009.00337.x
Abstract
Recently, Ballance et al. (2006) revived the hypothesis that cetaceans were a major
force in the structuring of Southern Ocean food webs, and suggested that they are
still playing a keystone role even as their loss continues (see also review in Mori and
Butterworth 2006), a subject that we herein would like to emphasize. According
to this hypothesis, following 60 yr of directed industrial whaling (Tønnessen and
Johnsen 1982, Baker and Clapham 2002), the demise of the great whales (blue,
Balaenoptera musculus intermedia; fin, B. physalus; and humpback, Megaptera novaeangliae)
led to changes in populations and demographic parameters among penguins,
seals, and minke whales (B. bonaerensis; see also Laws 1977, Bengtson and Laws
1985). These changes to populations of the great whales’ competitors came about
upon release from trophic competition as a result of the "krill surplus" that ensued
(i.e., of Antarctic krill, Euphausia superba; Bengtson and Laws 1985).
Item Details
| Item Type: | Letter or Note in Journal |
|---|---|
| Research Division: | Biological Sciences |
| Research Group: | Ecology |
| Research Field: | Marine and Estuarine Ecology (incl. Marine Ichthyology) |
| Objective Division: | Environment |
| Objective Group: | Ecosystem Assessment and Management |
| Objective Field: | Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments |
| UTAS Author: | Woehler, E (Dr Eric Woehler) |
| ID Code: | 62163 |
| Year Published: | 2010 |
| Web of Science® Times Cited: | 48 |
| Deposited By: | Zoology |
| Deposited On: | 2010-03-10 |
| Last Modified: | 2011-01-13 |
| Downloads: | 2 View Download Statistics |
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