Have whales returned to a historical hotspot of industrial whaling? the pattern of southern right whale Eubalaena australis recovery at South Georgia

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dc.contributor.author Jackson, Jennifer A.
dc.contributor.author Kennedy, Amy
dc.contributor.author Moore, Michael
dc.contributor.author Andriolo, Artur
dc.contributor.author Bamford, Connor C.G.
dc.contributor.author Calderan, Susannah
dc.contributor.author Cheeseman, Ted
dc.contributor.author Gittins, George
dc.contributor.author Groch, Karina
dc.contributor.author Kelly, Natalie
dc.contributor.author Leaper, Russell
dc.contributor.author Leslie, Matthew S.
dc.contributor.author Lurcock, Sarah
dc.contributor.author Miller, Brian S.
dc.contributor.author Richardson, Jessica
dc.contributor.author Rowntree, Vicky
dc.contributor.author Smith, Patrick
dc.contributor.author Stepien, Emilie
dc.contributor.author Stowasser, Gabriele
dc.contributor.author Trathan, Phil
dc.contributor.author Vermeulen, Els
dc.contributor.author Zerbini, Alexandre N.
dc.contributor.author Carroll, Emma L.
dc.date.accessioned 2021-04-01T11:59:06Z
dc.date.available 2021-04-01T11:59:06Z
dc.date.issued 2020-11
dc.description This study forms part of the Ecosystems component of the British Antarctic Survey Polar Science for Planet Earth Programme, funded by The Natural Environment Research Council. en_ZA
dc.description.abstract Around 176 500 whales were killed in the sub-Antarctic waters off South Georgia (South Atlantic) between 1904 and 1965. In recent decades, whales have once again become summer visitors, with the southern right whale (SRW) the most commonly reported species until 2011. Here, we assess the distribution, temporal pattern, health status and likely prey of SRWs in these waters, combining observations from a summertime vessel-based expedition to South Georgia, stable isotope data collected from SRWs and putative prey and sightings reports collated by the South Georgia Museum. The expedition used directional acoustics and visual surveys to localise whales and collected skin biopsies and photo-IDs. During 76 h of visual observation effort over 19 expedition days, SRWs were encountered 15 times (~31 individuals). Photo-IDs, combined with publicly contributed images from commercial vessels, were reconciled and quality-controlled to form a catalogue of 6 fully (i.e. both sides) identified SRWs and 26 SRWs identified by either left or right sides. No photo-ID matches were found with lower-latitude calving grounds, but 3 whales had gull lesions supporting a direct link with Península Valdés, Argentina. The isotopic position of SRWs in the South Georgia food web suggests feeding on a combination of copepod and krill species. Opportunistic reports of SRW sightings and associated group sizes remain steady over time, while humpback whales provide a strong contrast, with increased sighting rates and group sizes seen since 2013. These data suggest a plateau in SRWs and an increasing humpback whale presence in South Georgia waters following the cessation of whaling. en_ZA
dc.description.department Zoology and Entomology en_ZA
dc.description.librarian pm2021 en_ZA
dc.description.sponsorship EU BEST 2.0 Medium Grant 1594, a DARWIN PLUS award DPLUS057 and the World Wildlife Fund. en_ZA
dc.description.uri http://www.int-res.com/journals/esr/esr-home en_ZA
dc.identifier.citation Jackson, J.A. Kennedy, A. Moore, M. et al. 2020, 'Have whales returned to a historical hotspot of industrial whaling? the pattern of southern right whale Eubalaena australis recovery at South Georgia', Endangered Species Research, vol. 43, pp. 323-339. en_ZA
dc.identifier.issn 1863-5407 (print)
dc.identifier.issn 1613-4796 (online)
dc.identifier.other 10.3354/esr01072
dc.identifier.uri http://hdl.handle.net/2263/79160
dc.language.iso en en_ZA
dc.publisher Inter Research en_ZA
dc.rights © The authors and the British Antarctic Survey 2020. Open Access under Creative Commons by Attribution Licence. en_ZA
dc.subject Whale en_ZA
dc.subject Whaling en_ZA
dc.subject Antarctic en_ZA
dc.subject Recovery en_ZA
dc.subject Habitat use en_ZA
dc.subject Southern right whale (Eubalaena australis) en_ZA
dc.title Have whales returned to a historical hotspot of industrial whaling? the pattern of southern right whale Eubalaena australis recovery at South Georgia en_ZA
dc.type Article en_ZA


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