Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence
Contemporary climate change is predicted to expose some species to altered predation regimes. Losses of Arctic sea ice are causing polar bears to increasingly forage on colonial seaduck eggs in lieu of ice-based hunting of marine mammals. Although polar bear predation of bird eggs has now been widel...
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Online Access: | https://scholar.uwindsor.ca/glierpub/657 https://doi.org/10.1139/as-2019-0017 https://scholar.uwindsor.ca/context/glierpub/article/1659/viewcontent/dey_et_al_2020_changes_in_the_distribution_of_nesting_arctic_seaducks_are_not_strongly_related_to_variation_in_polar.pdf |
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ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1659 2023-12-17T10:25:02+01:00 Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence Dey, Cody J. Semeniuk, Christina A.D. Iverson, Samuel A. Grant Gilchrist, H. 2020-01-01T08:00:00Z application/pdf https://scholar.uwindsor.ca/glierpub/657 https://doi.org/10.1139/as-2019-0017 https://scholar.uwindsor.ca/context/glierpub/article/1659/viewcontent/dey_et_al_2020_changes_in_the_distribution_of_nesting_arctic_seaducks_are_not_strongly_related_to_variation_in_polar.pdf unknown Scholarship at UWindsor https://scholar.uwindsor.ca/glierpub/657 doi:10.1139/as-2019-0017 https://scholar.uwindsor.ca/context/glierpub/article/1659/viewcontent/dey_et_al_2020_changes_in_the_distribution_of_nesting_arctic_seaducks_are_not_strongly_related_to_variation_in_polar.pdf http://creativecommons.org/licenses/by/4.0/ Great Lakes Institute for Environmental Research Publications Global warming Predator–prey Sea ice Seabird Ursus Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology text 2020 ftunivwindsor https://doi.org/10.1139/as-2019-0017 2023-11-18T23:13:19Z Contemporary climate change is predicted to expose some species to altered predation regimes. Losses of Arctic sea ice are causing polar bears to increasingly forage on colonial seaduck eggs in lieu of ice-based hunting of marine mammals. Although polar bear predation of bird eggs has now been widely documented, it is unclear whether this change in predator behavior is having population-level consequences for Arctic breeding birds. In this study, we tested whether changes in the number of common eider nests on 76 islands in Hudson Strait, Canada, were related to variation in polar bear presence. We found that polar bear sign detected during eider breeding surveys was strongly correlated with spatial patterns of polar bears observed during aerial surveys. However, changes in eider nest count did not appear to be clearly related to polar bear sign at either the island scale or the island-cluster scale. This results of this study, therefore, suggest that the spatial overlap between eiders and polar bears varies across the landscape, but patterns of polar bear spatial variation do not seem to have driven large-scale redistribution of nesting common eiders. Text Arctic Climate change Common Eider Global warming Hudson Strait Sea ice University of Windsor, Ontario: Scholarship at UWindsor Arctic Canada Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Arctic Science 6 2 114 123 |
institution |
Open Polar |
collection |
University of Windsor, Ontario: Scholarship at UWindsor |
op_collection_id |
ftunivwindsor |
language |
unknown |
topic |
Global warming Predator–prey Sea ice Seabird Ursus Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology |
spellingShingle |
Global warming Predator–prey Sea ice Seabird Ursus Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology Dey, Cody J. Semeniuk, Christina A.D. Iverson, Samuel A. Grant Gilchrist, H. Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence |
topic_facet |
Global warming Predator–prey Sea ice Seabird Ursus Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology |
description |
Contemporary climate change is predicted to expose some species to altered predation regimes. Losses of Arctic sea ice are causing polar bears to increasingly forage on colonial seaduck eggs in lieu of ice-based hunting of marine mammals. Although polar bear predation of bird eggs has now been widely documented, it is unclear whether this change in predator behavior is having population-level consequences for Arctic breeding birds. In this study, we tested whether changes in the number of common eider nests on 76 islands in Hudson Strait, Canada, were related to variation in polar bear presence. We found that polar bear sign detected during eider breeding surveys was strongly correlated with spatial patterns of polar bears observed during aerial surveys. However, changes in eider nest count did not appear to be clearly related to polar bear sign at either the island scale or the island-cluster scale. This results of this study, therefore, suggest that the spatial overlap between eiders and polar bears varies across the landscape, but patterns of polar bear spatial variation do not seem to have driven large-scale redistribution of nesting common eiders. |
format |
Text |
author |
Dey, Cody J. Semeniuk, Christina A.D. Iverson, Samuel A. Grant Gilchrist, H. |
author_facet |
Dey, Cody J. Semeniuk, Christina A.D. Iverson, Samuel A. Grant Gilchrist, H. |
author_sort |
Dey, Cody J. |
title |
Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence |
title_short |
Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence |
title_full |
Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence |
title_fullStr |
Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence |
title_full_unstemmed |
Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence |
title_sort |
changes in the distribution of nesting arctic seaducks are not strongly related to variation in polar bear presence |
publisher |
Scholarship at UWindsor |
publishDate |
2020 |
url |
https://scholar.uwindsor.ca/glierpub/657 https://doi.org/10.1139/as-2019-0017 https://scholar.uwindsor.ca/context/glierpub/article/1659/viewcontent/dey_et_al_2020_changes_in_the_distribution_of_nesting_arctic_seaducks_are_not_strongly_related_to_variation_in_polar.pdf |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) |
geographic |
Arctic Canada Hudson Hudson Strait |
geographic_facet |
Arctic Canada Hudson Hudson Strait |
genre |
Arctic Climate change Common Eider Global warming Hudson Strait Sea ice |
genre_facet |
Arctic Climate change Common Eider Global warming Hudson Strait Sea ice |
op_source |
Great Lakes Institute for Environmental Research Publications |
op_relation |
https://scholar.uwindsor.ca/glierpub/657 doi:10.1139/as-2019-0017 https://scholar.uwindsor.ca/context/glierpub/article/1659/viewcontent/dey_et_al_2020_changes_in_the_distribution_of_nesting_arctic_seaducks_are_not_strongly_related_to_variation_in_polar.pdf |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1139/as-2019-0017 |
container_title |
Arctic Science |
container_volume |
6 |
container_issue |
2 |
container_start_page |
114 |
op_container_end_page |
123 |
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1785572525090013184 |