Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard
We used satellite telemetry methods to study macaroni penguins at South Georgia to determine how they ranged from their colonies during the early part of their breeding season at a time when they are constrained to return to their chicks on a near-daily basis. The principal objectives of this study...
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ftnerc:oai:nora.nerc.ac.uk:1045 2024-06-09T07:40:42+00:00 Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard Trathan, P.N. Green, C. Tanton, J. Peat, H. Poncet, J. Morton, A. 2006 http://nora.nerc.ac.uk/id/eprint/1045/ http://www.int-res.com/articles/meps2006/323/m323p239.pdf https://doi.org/10.3354/meps3232339 unknown Inter-Research Trathan, P.N. orcid:0000-0001-6673-9930 Green, C.; Tanton, J.; Peat, H. orcid:0000-0003-2017-8597 Poncet, J.; Morton, A. 2006 Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard. Marine Ecology Progress Series, 323. 239-251. https://doi.org/10.3354/meps3232339 <https://doi.org/10.3354/meps3232339> Zoology Publication - Article PeerReviewed 2006 ftnerc https://doi.org/10.3354/meps3232339 2024-05-15T08:39:04Z We used satellite telemetry methods to study macaroni penguins at South Georgia to determine how they ranged from their colonies during the early part of their breeding season at a time when they are constrained to return to their chicks on a near-daily basis. The principal objectives of this study were to examine whether these penguins exploit major oceanographic features where prey may be more predictable, whether birds from one colony forage in separate locations to those from nearby colonies, or whether they range evenly over the available area. Results show that the penguins did not range evenly, that birds from one colony tended to forage in locations separate from those used by birds from nearby colonies (or at least overlap was restricted), and that though birds from some colonies foraged within waters influenced by major oceanographic features such as the southern Antarctic Circumpolar Current front, not all birds in the region focused on such areas, as some birds foraged in other oceanographic contexts. The results from this study highlight the complexity of foraging dynamics for colonially nesting seabirds; they also help inform management models currently being developed for Antarctic krill fisheries, which are a potential competitor for the main prey of macaroni penguins. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Eudyptes chrysolophus Natural Environment Research Council: NERC Open Research Archive Antarctic |
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Natural Environment Research Council: NERC Open Research Archive |
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topic |
Zoology |
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Zoology Trathan, P.N. Green, C. Tanton, J. Peat, H. Poncet, J. Morton, A. Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard |
topic_facet |
Zoology |
description |
We used satellite telemetry methods to study macaroni penguins at South Georgia to determine how they ranged from their colonies during the early part of their breeding season at a time when they are constrained to return to their chicks on a near-daily basis. The principal objectives of this study were to examine whether these penguins exploit major oceanographic features where prey may be more predictable, whether birds from one colony forage in separate locations to those from nearby colonies, or whether they range evenly over the available area. Results show that the penguins did not range evenly, that birds from one colony tended to forage in locations separate from those used by birds from nearby colonies (or at least overlap was restricted), and that though birds from some colonies foraged within waters influenced by major oceanographic features such as the southern Antarctic Circumpolar Current front, not all birds in the region focused on such areas, as some birds foraged in other oceanographic contexts. The results from this study highlight the complexity of foraging dynamics for colonially nesting seabirds; they also help inform management models currently being developed for Antarctic krill fisheries, which are a potential competitor for the main prey of macaroni penguins. |
format |
Article in Journal/Newspaper |
author |
Trathan, P.N. Green, C. Tanton, J. Peat, H. Poncet, J. Morton, A. |
author_facet |
Trathan, P.N. Green, C. Tanton, J. Peat, H. Poncet, J. Morton, A. |
author_sort |
Trathan, P.N. |
title |
Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard |
title_short |
Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard |
title_full |
Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard |
title_fullStr |
Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard |
title_full_unstemmed |
Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard |
title_sort |
foraging dynamics of macaroni penguins eudyptes chrysolophus at south georgia during brood-guard |
publisher |
Inter-Research |
publishDate |
2006 |
url |
http://nora.nerc.ac.uk/id/eprint/1045/ http://www.int-res.com/articles/meps2006/323/m323p239.pdf https://doi.org/10.3354/meps3232339 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Eudyptes chrysolophus |
genre_facet |
Antarc* Antarctic Antarctic Krill Eudyptes chrysolophus |
op_relation |
Trathan, P.N. orcid:0000-0001-6673-9930 Green, C.; Tanton, J.; Peat, H. orcid:0000-0003-2017-8597 Poncet, J.; Morton, A. 2006 Foraging dynamics of macaroni penguins Eudyptes chrysolophus at South Georgia during brood-guard. Marine Ecology Progress Series, 323. 239-251. https://doi.org/10.3354/meps3232339 <https://doi.org/10.3354/meps3232339> |
op_doi |
https://doi.org/10.3354/meps3232339 |
_version_ |
1801369106239193088 |