Fluctuations in Adélie penguin prey size in the mid to late Holocene
Abstract We investigated temporal changes in Adélie penguin prey size in northern Marguerite Bay, Antarctic Peninsula, through excavations of three abandoned and one active colony at Lagoon (6735¢S, 6816¢W) and Ginger Islands (6745¢S, 6841¢W), respectively, in aus-tral summer 1999/2000. Radiocarbon...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.503.9543 2023-05-15T13:52:23+02:00 Fluctuations in Adélie penguin prey size in the mid to late Holocene Jenny D. Mcdaniel Æ Steven D. Emslie Northern Marguerite Bay Antarctic Peninsula The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.503.9543 http://people.uncw.edu/emslies/research/McDaniel and Emslie 2002.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.503.9543 http://people.uncw.edu/emslies/research/McDaniel and Emslie 2002.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://people.uncw.edu/emslies/research/McDaniel and Emslie 2002.pdf text 2002 ftciteseerx 2016-01-08T09:16:35Z Abstract We investigated temporal changes in Adélie penguin prey size in northern Marguerite Bay, Antarctic Peninsula, through excavations of three abandoned and one active colony at Lagoon (6735¢S, 6816¢W) and Ginger Islands (6745¢S, 6841¢W), respectively, in aus-tral summer 1999/2000. Radiocarbon dates on penguin bones and eggshell fragments collected at each site in-dicate that Lagoon Island was first occupied after 6000 BP and Ginger Island near 2275 BP. Identifiable non-krill prey remains (otoliths and squid beaks) were recovered from ornithogenic soils at all sites, with Ant-arctic silverfish (Pleuragramma antarcticum) and squid (Psychroteuthis glacialis) being the most abundant spe-cies represented in the deposits. Estimated mean stan-dard lengths and mantle lengths of these two prey taxa, based on regressions with otolith and beak measure-ments respectively, indicate that Adélie penguins primarily select these prey within a mean size range of 95–117 mm. Prey size also varied significantly across seven occupation periods from 6000 BP to the present, but did not correlate with climate change. Text Antarc* Antarctic Antarctic Peninsula Arctic Climate change Ginger Islands Lagoon Island Unknown Antarctic Antarctic Peninsula Arctic Ginger Islands ENVELOPE(-68.687,-68.687,-67.750,-67.750) Lagoon Island ENVELOPE(-68.239,-68.239,-67.594,-67.594) Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
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English |
description |
Abstract We investigated temporal changes in Adélie penguin prey size in northern Marguerite Bay, Antarctic Peninsula, through excavations of three abandoned and one active colony at Lagoon (6735¢S, 6816¢W) and Ginger Islands (6745¢S, 6841¢W), respectively, in aus-tral summer 1999/2000. Radiocarbon dates on penguin bones and eggshell fragments collected at each site in-dicate that Lagoon Island was first occupied after 6000 BP and Ginger Island near 2275 BP. Identifiable non-krill prey remains (otoliths and squid beaks) were recovered from ornithogenic soils at all sites, with Ant-arctic silverfish (Pleuragramma antarcticum) and squid (Psychroteuthis glacialis) being the most abundant spe-cies represented in the deposits. Estimated mean stan-dard lengths and mantle lengths of these two prey taxa, based on regressions with otolith and beak measure-ments respectively, indicate that Adélie penguins primarily select these prey within a mean size range of 95–117 mm. Prey size also varied significantly across seven occupation periods from 6000 BP to the present, but did not correlate with climate change. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Jenny D. Mcdaniel Æ Steven D. Emslie Northern Marguerite Bay Antarctic Peninsula |
spellingShingle |
Jenny D. Mcdaniel Æ Steven D. Emslie Northern Marguerite Bay Antarctic Peninsula Fluctuations in Adélie penguin prey size in the mid to late Holocene |
author_facet |
Jenny D. Mcdaniel Æ Steven D. Emslie Northern Marguerite Bay Antarctic Peninsula |
author_sort |
Jenny D. Mcdaniel |
title |
Fluctuations in Adélie penguin prey size in the mid to late Holocene |
title_short |
Fluctuations in Adélie penguin prey size in the mid to late Holocene |
title_full |
Fluctuations in Adélie penguin prey size in the mid to late Holocene |
title_fullStr |
Fluctuations in Adélie penguin prey size in the mid to late Holocene |
title_full_unstemmed |
Fluctuations in Adélie penguin prey size in the mid to late Holocene |
title_sort |
fluctuations in adélie penguin prey size in the mid to late holocene |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.503.9543 http://people.uncw.edu/emslies/research/McDaniel and Emslie 2002.pdf |
long_lat |
ENVELOPE(-68.687,-68.687,-67.750,-67.750) ENVELOPE(-68.239,-68.239,-67.594,-67.594) ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Arctic Ginger Islands Lagoon Island Marguerite Marguerite Bay |
geographic_facet |
Antarctic Antarctic Peninsula Arctic Ginger Islands Lagoon Island Marguerite Marguerite Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Climate change Ginger Islands Lagoon Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Climate change Ginger Islands Lagoon Island |
op_source |
http://people.uncw.edu/emslies/research/McDaniel and Emslie 2002.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.503.9543 http://people.uncw.edu/emslies/research/McDaniel and Emslie 2002.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766256661458059264 |