Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability
To ensure successful reproduction, seabirds must make continuous and adaptive foraging decisions in the face of uncertain prey conditions. I compared the foraging behavior (foraging ranges and diet choices) of parental common murres and Atlantic puffins at a high density, offshore colony (Funk Islan...
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Memorial University of Newfoundland
2008
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ftmemorialuniv:oai:research.library.mun.ca:8653 2023-10-01T03:56:02+02:00 Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability Burke, Chantelle M. 2008 application/pdf https://research.library.mun.ca/8653/ https://research.library.mun.ca/8653/1/Burke_Chantelle.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/8653/1/Burke_Chantelle.pdf Burke, Chantelle M. <https://research.library.mun.ca/view/creator_az/Burke=3AChantelle_M=2E=3A=3A.html> (2008) Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability. Masters thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 2008 ftmemorialuniv 2023-09-03T06:47:00Z To ensure successful reproduction, seabirds must make continuous and adaptive foraging decisions in the face of uncertain prey conditions. I compared the foraging behavior (foraging ranges and diet choices) of parental common murres and Atlantic puffins at a high density, offshore colony (Funk Island) during 2 years of different forage fish availability. In a poor food year (2005), characterized by an order of magnitude decline in forage fish densities and smaller fish, murres and puffins increased the mean distance they traveled to forage by 36% and preferentially selected larger fish. These responses show flexible foraging behavior, but significantly lighter murre fledglings in 2005 (203.0 ± 4.6 g) relative to 2004 (215.0 ± 3.9 g) suggests that specialized feeding on unpredictable prey can have consequences for reproductive success. Puffins that are generalist foragers and have multiple prey load capacity were more resilient to declines in prey availability. Thesis fratercula Fratercula arctica Uria aalge uria Memorial University of Newfoundland: Research Repository Funk Island ENVELOPE(-53.181,-53.181,49.750,49.750) |
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Memorial University of Newfoundland: Research Repository |
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language |
English |
description |
To ensure successful reproduction, seabirds must make continuous and adaptive foraging decisions in the face of uncertain prey conditions. I compared the foraging behavior (foraging ranges and diet choices) of parental common murres and Atlantic puffins at a high density, offshore colony (Funk Island) during 2 years of different forage fish availability. In a poor food year (2005), characterized by an order of magnitude decline in forage fish densities and smaller fish, murres and puffins increased the mean distance they traveled to forage by 36% and preferentially selected larger fish. These responses show flexible foraging behavior, but significantly lighter murre fledglings in 2005 (203.0 ± 4.6 g) relative to 2004 (215.0 ± 3.9 g) suggests that specialized feeding on unpredictable prey can have consequences for reproductive success. Puffins that are generalist foragers and have multiple prey load capacity were more resilient to declines in prey availability. |
format |
Thesis |
author |
Burke, Chantelle M. |
spellingShingle |
Burke, Chantelle M. Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability |
author_facet |
Burke, Chantelle M. |
author_sort |
Burke, Chantelle M. |
title |
Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability |
title_short |
Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability |
title_full |
Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability |
title_fullStr |
Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability |
title_full_unstemmed |
Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability |
title_sort |
comparative foraging ecology of parental common murres (uria aalge) and atlantic puffins (fratercula arctica) in response to changes in forage fish availability |
publisher |
Memorial University of Newfoundland |
publishDate |
2008 |
url |
https://research.library.mun.ca/8653/ https://research.library.mun.ca/8653/1/Burke_Chantelle.pdf |
long_lat |
ENVELOPE(-53.181,-53.181,49.750,49.750) |
geographic |
Funk Island |
geographic_facet |
Funk Island |
genre |
fratercula Fratercula arctica Uria aalge uria |
genre_facet |
fratercula Fratercula arctica Uria aalge uria |
op_relation |
https://research.library.mun.ca/8653/1/Burke_Chantelle.pdf Burke, Chantelle M. <https://research.library.mun.ca/view/creator_az/Burke=3AChantelle_M=2E=3A=3A.html> (2008) Comparative foraging ecology of parental common murres (Uria aalge) and Atlantic puffins (Fratercula arctica) in response to changes in forage fish availability. Masters thesis, Memorial University of Newfoundland. |
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thesis_license |
_version_ |
1778525111777755136 |