Destroying and Restoring Critical Habitats of Endangered Killer Whales
Abstract Endangered species legislation in the United States and Canada aims to prevent extinction of species, in part by designating and protecting critical habitats essential to ensure survival and recovery. These strict laws prohibit adverse modification or destruction of critical habitat, respec...
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2021
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Online Access: | http://dx.doi.org/10.1093/biosci/biab085 http://academic.oup.com/bioscience/article-pdf/71/11/1117/41027768/biab085.pdf |
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croxfordunivpr:10.1093/biosci/biab085 2024-06-23T07:54:22+00:00 Destroying and Restoring Critical Habitats of Endangered Killer Whales Williams, Rob Ashe, Erin Broadhurst, Ginny Jasny, Michael Tuytel, Dyna Venton, Margot Ragen, Tim 2021 http://dx.doi.org/10.1093/biosci/biab085 http://academic.oup.com/bioscience/article-pdf/71/11/1117/41027768/biab085.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by-nc/4.0/ BioScience volume 71, issue 11, page 1117-1120 ISSN 0006-3568 1525-3244 journal-article 2021 croxfordunivpr https://doi.org/10.1093/biosci/biab085 2024-06-04T06:10:37Z Abstract Endangered species legislation in the United States and Canada aims to prevent extinction of species, in part by designating and protecting critical habitats essential to ensure survival and recovery. These strict laws prohibit adverse modification or destruction of critical habitat, respectively. Defining thresholds for such effects is challenging, especially for wholly aquatic taxa. Destruction of critical habitat (e.g., prey reduction and ocean noise) threatens the survival and recovery of the 75 members of the endangered southern resident killer whale population found in transboundary (Canada–United States) Pacific waters. The population's dynamics are now driven largely by the cumulative effects of prey limitation (e.g., the endangered Chinook salmon), anthropogenic noise and disturbance (e.g., reducing prey accessibility), and toxic contaminants, which are all forms of habitat degradation. It is difficult to define a single threshold beyond which habitat degradation becomes destruction, but multiple lines of evidence suggest that line may have been crossed already. Article in Journal/Newspaper Killer Whale Killer whale Oxford University Press Canada Pacific BioScience |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Endangered species legislation in the United States and Canada aims to prevent extinction of species, in part by designating and protecting critical habitats essential to ensure survival and recovery. These strict laws prohibit adverse modification or destruction of critical habitat, respectively. Defining thresholds for such effects is challenging, especially for wholly aquatic taxa. Destruction of critical habitat (e.g., prey reduction and ocean noise) threatens the survival and recovery of the 75 members of the endangered southern resident killer whale population found in transboundary (Canada–United States) Pacific waters. The population's dynamics are now driven largely by the cumulative effects of prey limitation (e.g., the endangered Chinook salmon), anthropogenic noise and disturbance (e.g., reducing prey accessibility), and toxic contaminants, which are all forms of habitat degradation. It is difficult to define a single threshold beyond which habitat degradation becomes destruction, but multiple lines of evidence suggest that line may have been crossed already. |
format |
Article in Journal/Newspaper |
author |
Williams, Rob Ashe, Erin Broadhurst, Ginny Jasny, Michael Tuytel, Dyna Venton, Margot Ragen, Tim |
spellingShingle |
Williams, Rob Ashe, Erin Broadhurst, Ginny Jasny, Michael Tuytel, Dyna Venton, Margot Ragen, Tim Destroying and Restoring Critical Habitats of Endangered Killer Whales |
author_facet |
Williams, Rob Ashe, Erin Broadhurst, Ginny Jasny, Michael Tuytel, Dyna Venton, Margot Ragen, Tim |
author_sort |
Williams, Rob |
title |
Destroying and Restoring Critical Habitats of Endangered Killer Whales |
title_short |
Destroying and Restoring Critical Habitats of Endangered Killer Whales |
title_full |
Destroying and Restoring Critical Habitats of Endangered Killer Whales |
title_fullStr |
Destroying and Restoring Critical Habitats of Endangered Killer Whales |
title_full_unstemmed |
Destroying and Restoring Critical Habitats of Endangered Killer Whales |
title_sort |
destroying and restoring critical habitats of endangered killer whales |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/biosci/biab085 http://academic.oup.com/bioscience/article-pdf/71/11/1117/41027768/biab085.pdf |
geographic |
Canada Pacific |
geographic_facet |
Canada Pacific |
genre |
Killer Whale Killer whale |
genre_facet |
Killer Whale Killer whale |
op_source |
BioScience volume 71, issue 11, page 1117-1120 ISSN 0006-3568 1525-3244 |
op_rights |
https://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1093/biosci/biab085 |
container_title |
BioScience |
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1802646505305145344 |