Climate-driven sympatry may not lead to foraging competition between congeneric top-predators
Publisher's PDF. Climate-driven sympatry may lead to competition for food resources between species. Rapid warming in the West Antarctic Peninsula (WAP) is coincident with increasing gentoo penguin and decreasing Adélie penguin populations, suggesting that competition for food may exacerbate th...
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Online Access: | http://udspace.udel.edu/handle/19716/17701 https://doi.org/10.1038/srep18820 |
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ftunivdelaware:oai:udspace.udel.edu:19716/17701 2024-04-28T08:02:29+00:00 Climate-driven sympatry may not lead to foraging competition between congeneric top-predators Cimino, Megan A. Moline, Mark A. Fraser, William R. Patterson-Fraser, Donna L. Oliver, Matthew J. Megan A. Cimino, Mark A. Moline, William R. Fraser, Donna L. Patterson-Fraser & Matthew J. Oliver Cimino, Megan A. Moline, Mark A. Oliver, Matthew J. 2016-01-06 application/pdf http://udspace.udel.edu/handle/19716/17701 https://doi.org/10.1038/srep18820 en_US eng Nature Publishing Group Cimino, M. A. et al. Climate-driven sympatry may not lead to foraging competition between congeneric top-predators. Sci. Rep. 6, 18820; doi:10.1038/srep18820 (2016). 2045-2322 http://udspace.udel.edu/handle/19716/17701 doi:10.1038/srep18820 Creative Commons Attribution License 4.0 Creative Commons Attribution Non-Commercial No Derivatives License and Creative Commons Attribution Non-Commercial Share Alike License available on request Scientific Reports http://www.nature.com/srep/ Article 2016 ftunivdelaware https://doi.org/10.1038/srep18820 2024-04-03T14:05:00Z Publisher's PDF. Climate-driven sympatry may lead to competition for food resources between species. Rapid warming in the West Antarctic Peninsula (WAP) is coincident with increasing gentoo penguin and decreasing Adélie penguin populations, suggesting that competition for food may exacerbate the Adélie penguin decline. On fine scales, we tested for foraging competition between these species during the chickrearing period by comparing their foraging behaviors with the distribution of their prey, Antarctic krill. We detected krill aggregations within the horizontal and vertical foraging ranges of Adélie and gentoo penguins, and found that krill selected for habitats that balance the need to consume food and avoid predation. In overlapping Adélie and gentoo penguin foraging areas, four gentoo penguins switched foraging behavior by foraging at deeper depths, a strategy which limits competition with Adélie penguins. This suggests that climate-driven sympatry does not necessarily result in competitive exclusion of Adélie penguins by gentoo penguins. Contrary to a recent theory, which suggests that increased competition for krill is one of the major drivers of Adélie penguin population declines, we suggest that declines in Adélie penguins along the WAP are more likely due to direct and indirect climate impacts on their life histories. University of Delaware. College of Earth, Ocean, and Environment. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Gentoo penguin The University of Delaware Library Institutional Repository Scientific Reports 6 1 |
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The University of Delaware Library Institutional Repository |
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ftunivdelaware |
language |
English |
description |
Publisher's PDF. Climate-driven sympatry may lead to competition for food resources between species. Rapid warming in the West Antarctic Peninsula (WAP) is coincident with increasing gentoo penguin and decreasing Adélie penguin populations, suggesting that competition for food may exacerbate the Adélie penguin decline. On fine scales, we tested for foraging competition between these species during the chickrearing period by comparing their foraging behaviors with the distribution of their prey, Antarctic krill. We detected krill aggregations within the horizontal and vertical foraging ranges of Adélie and gentoo penguins, and found that krill selected for habitats that balance the need to consume food and avoid predation. In overlapping Adélie and gentoo penguin foraging areas, four gentoo penguins switched foraging behavior by foraging at deeper depths, a strategy which limits competition with Adélie penguins. This suggests that climate-driven sympatry does not necessarily result in competitive exclusion of Adélie penguins by gentoo penguins. Contrary to a recent theory, which suggests that increased competition for krill is one of the major drivers of Adélie penguin population declines, we suggest that declines in Adélie penguins along the WAP are more likely due to direct and indirect climate impacts on their life histories. University of Delaware. College of Earth, Ocean, and Environment. |
author2 |
Megan A. Cimino, Mark A. Moline, William R. Fraser, Donna L. Patterson-Fraser & Matthew J. Oliver Cimino, Megan A. Moline, Mark A. Oliver, Matthew J. |
format |
Article in Journal/Newspaper |
author |
Cimino, Megan A. Moline, Mark A. Fraser, William R. Patterson-Fraser, Donna L. Oliver, Matthew J. |
spellingShingle |
Cimino, Megan A. Moline, Mark A. Fraser, William R. Patterson-Fraser, Donna L. Oliver, Matthew J. Climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
author_facet |
Cimino, Megan A. Moline, Mark A. Fraser, William R. Patterson-Fraser, Donna L. Oliver, Matthew J. |
author_sort |
Cimino, Megan A. |
title |
Climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
title_short |
Climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
title_full |
Climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
title_fullStr |
Climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
title_full_unstemmed |
Climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
title_sort |
climate-driven sympatry may not lead to foraging competition between congeneric top-predators |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://udspace.udel.edu/handle/19716/17701 https://doi.org/10.1038/srep18820 |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Gentoo penguin |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Gentoo penguin |
op_source |
Scientific Reports http://www.nature.com/srep/ |
op_relation |
Cimino, M. A. et al. Climate-driven sympatry may not lead to foraging competition between congeneric top-predators. Sci. Rep. 6, 18820; doi:10.1038/srep18820 (2016). 2045-2322 http://udspace.udel.edu/handle/19716/17701 doi:10.1038/srep18820 |
op_rights |
Creative Commons Attribution License 4.0 Creative Commons Attribution Non-Commercial No Derivatives License and Creative Commons Attribution Non-Commercial Share Alike License available on request |
op_doi |
https://doi.org/10.1038/srep18820 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1797573813479669760 |