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Large-scale climatic anomalies affect marine predator foraging behaviour and demography

Determining the links between the behavioural and population responses of wild species to environmental variations is critical for understanding the impact of climate variability on ecosystems. Using long-term data sets, we show how large-scale climatic anomalies in the Southern Hemisphere affect th...

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Autores principales: Bost, Charles A., Cotté, Cedric, Terray, Pascal, Barbraud, Christophe, Bon, Cécile, Delord, Karine, Gimenez, Olivier, Handrich, Yves, Naito, Yasuhiko, Guinet, Christophe, Weimerskirch, Henri
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639794/
https://www.ncbi.nlm.nih.gov/pubmed/26506134
http://dx.doi.org/10.1038/ncomms9220
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author Bost, Charles A.
Cotté, Cedric
Terray, Pascal
Barbraud, Christophe
Bon, Cécile
Delord, Karine
Gimenez, Olivier
Handrich, Yves
Naito, Yasuhiko
Guinet, Christophe
Weimerskirch, Henri
author_facet Bost, Charles A.
Cotté, Cedric
Terray, Pascal
Barbraud, Christophe
Bon, Cécile
Delord, Karine
Gimenez, Olivier
Handrich, Yves
Naito, Yasuhiko
Guinet, Christophe
Weimerskirch, Henri
author_sort Bost, Charles A.
collection PubMed
description Determining the links between the behavioural and population responses of wild species to environmental variations is critical for understanding the impact of climate variability on ecosystems. Using long-term data sets, we show how large-scale climatic anomalies in the Southern Hemisphere affect the foraging behaviour and population dynamics of a key marine predator, the king penguin. When large-scale subtropical dipole events occur simultaneously in both subtropical Southern Indian and Atlantic Oceans, they generate tropical anomalies that shift the foraging zone southward. Consequently the distances that penguins foraged from the colony and their feeding depths increased and the population size decreased. This represents an example of a robust and fast impact of large-scale climatic anomalies affecting a marine predator through changes in its at-sea behaviour and demography, despite lack of information on prey availability. Our results highlight a possible behavioural mechanism through which climate variability may affect population processes.
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spelling pubmed-46397942015-12-08 Large-scale climatic anomalies affect marine predator foraging behaviour and demography Bost, Charles A. Cotté, Cedric Terray, Pascal Barbraud, Christophe Bon, Cécile Delord, Karine Gimenez, Olivier Handrich, Yves Naito, Yasuhiko Guinet, Christophe Weimerskirch, Henri Nat Commun Article Determining the links between the behavioural and population responses of wild species to environmental variations is critical for understanding the impact of climate variability on ecosystems. Using long-term data sets, we show how large-scale climatic anomalies in the Southern Hemisphere affect the foraging behaviour and population dynamics of a key marine predator, the king penguin. When large-scale subtropical dipole events occur simultaneously in both subtropical Southern Indian and Atlantic Oceans, they generate tropical anomalies that shift the foraging zone southward. Consequently the distances that penguins foraged from the colony and their feeding depths increased and the population size decreased. This represents an example of a robust and fast impact of large-scale climatic anomalies affecting a marine predator through changes in its at-sea behaviour and demography, despite lack of information on prey availability. Our results highlight a possible behavioural mechanism through which climate variability may affect population processes. Nature Pub. Group 2015-10-27 /pmc/articles/PMC4639794/ /pubmed/26506134 http://dx.doi.org/10.1038/ncomms9220 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Bost, Charles A.
Cotté, Cedric
Terray, Pascal
Barbraud, Christophe
Bon, Cécile
Delord, Karine
Gimenez, Olivier
Handrich, Yves
Naito, Yasuhiko
Guinet, Christophe
Weimerskirch, Henri
Large-scale climatic anomalies affect marine predator foraging behaviour and demography
title Large-scale climatic anomalies affect marine predator foraging behaviour and demography
title_full Large-scale climatic anomalies affect marine predator foraging behaviour and demography
title_fullStr Large-scale climatic anomalies affect marine predator foraging behaviour and demography
title_full_unstemmed Large-scale climatic anomalies affect marine predator foraging behaviour and demography
title_short Large-scale climatic anomalies affect marine predator foraging behaviour and demography
title_sort large-scale climatic anomalies affect marine predator foraging behaviour and demography
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639794/
https://www.ncbi.nlm.nih.gov/pubmed/26506134
http://dx.doi.org/10.1038/ncomms9220
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