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Seascapes of fear and competition shape regional seabird movement ecology
Fear effects of predators on prey distributions are seldom considered in marine environments, especially over large spatial scales and in conservation contexts. To fill these major gaps, we tested the Seascape of Fear Hypothesis in the Benguela marine ecosystem off South Africa. Using electronic tra...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8897475/ https://www.ncbi.nlm.nih.gov/pubmed/35246607 http://dx.doi.org/10.1038/s42003-022-03151-z |
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author | Courbin, Nicolas Pichegru, Lorien Seakamela, Mduduzi Makhado, Azwianewi Meÿer, Michael Kotze, Pieter G. H. Mc Cue, Steven A. Péron, Clara Grémillet, David |
author_facet | Courbin, Nicolas Pichegru, Lorien Seakamela, Mduduzi Makhado, Azwianewi Meÿer, Michael Kotze, Pieter G. H. Mc Cue, Steven A. Péron, Clara Grémillet, David |
author_sort | Courbin, Nicolas |
collection | PubMed |
description | Fear effects of predators on prey distributions are seldom considered in marine environments, especially over large spatial scales and in conservation contexts. To fill these major gaps, we tested the Seascape of Fear Hypothesis in the Benguela marine ecosystem off South Africa. Using electronic tracking data, we showed that Cape gannets and their predator, the Cape fur seal, co-occurred in daytime and competed with fisheries within coastal areas. At night, gannets are particularly vulnerable to seals, and 28% of the birds returned to the safety of their breeding colony. The remaining 72% slept at the sea surface, but shifted to offshore areas with lower seal attendance, reducing predation risk by 25%. Overall, our integrative study demonstrates how fear and competition shape the seascape of threatened Cape gannets within a marine environment perturbed by climate change and overfishing. Such knowledge has strong implications for the design of marine protected areas. |
format | Online Article Text |
id | pubmed-8897475 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-88974752022-03-22 Seascapes of fear and competition shape regional seabird movement ecology Courbin, Nicolas Pichegru, Lorien Seakamela, Mduduzi Makhado, Azwianewi Meÿer, Michael Kotze, Pieter G. H. Mc Cue, Steven A. Péron, Clara Grémillet, David Commun Biol Article Fear effects of predators on prey distributions are seldom considered in marine environments, especially over large spatial scales and in conservation contexts. To fill these major gaps, we tested the Seascape of Fear Hypothesis in the Benguela marine ecosystem off South Africa. Using electronic tracking data, we showed that Cape gannets and their predator, the Cape fur seal, co-occurred in daytime and competed with fisheries within coastal areas. At night, gannets are particularly vulnerable to seals, and 28% of the birds returned to the safety of their breeding colony. The remaining 72% slept at the sea surface, but shifted to offshore areas with lower seal attendance, reducing predation risk by 25%. Overall, our integrative study demonstrates how fear and competition shape the seascape of threatened Cape gannets within a marine environment perturbed by climate change and overfishing. Such knowledge has strong implications for the design of marine protected areas. Nature Publishing Group UK 2022-03-04 /pmc/articles/PMC8897475/ /pubmed/35246607 http://dx.doi.org/10.1038/s42003-022-03151-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Courbin, Nicolas Pichegru, Lorien Seakamela, Mduduzi Makhado, Azwianewi Meÿer, Michael Kotze, Pieter G. H. Mc Cue, Steven A. Péron, Clara Grémillet, David Seascapes of fear and competition shape regional seabird movement ecology |
title | Seascapes of fear and competition shape regional seabird movement ecology |
title_full | Seascapes of fear and competition shape regional seabird movement ecology |
title_fullStr | Seascapes of fear and competition shape regional seabird movement ecology |
title_full_unstemmed | Seascapes of fear and competition shape regional seabird movement ecology |
title_short | Seascapes of fear and competition shape regional seabird movement ecology |
title_sort | seascapes of fear and competition shape regional seabird movement ecology |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8897475/ https://www.ncbi.nlm.nih.gov/pubmed/35246607 http://dx.doi.org/10.1038/s42003-022-03151-z |
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