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Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula

Dramatic decreases of chinstrap penguin populations across the Antarctic Peninsula (AP) are thought to be influenced by climate-driven changes affecting its main prey, the Antarctic krill, however, empirical evidence supporting such hypotheses are scarce. By coupling data on breeding chinstrap pengu...

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Autores principales: Salmerón, Nuria, Belle, Solenne, Cruz, Francisco Santa, Alegria, Nicolás, Finger, Júlia Victória Grohmann, Corá, Denyelle Hennayra, Petry, Maria Virginia, Hernández, Cristina, Cárdenas, César A., Krüger, Lucas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10066220/
https://www.ncbi.nlm.nih.gov/pubmed/37002269
http://dx.doi.org/10.1038/s41598-023-32352-7
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author Salmerón, Nuria
Belle, Solenne
Cruz, Francisco Santa
Alegria, Nicolás
Finger, Júlia Victória Grohmann
Corá, Denyelle Hennayra
Petry, Maria Virginia
Hernández, Cristina
Cárdenas, César A.
Krüger, Lucas
author_facet Salmerón, Nuria
Belle, Solenne
Cruz, Francisco Santa
Alegria, Nicolás
Finger, Júlia Victória Grohmann
Corá, Denyelle Hennayra
Petry, Maria Virginia
Hernández, Cristina
Cárdenas, César A.
Krüger, Lucas
author_sort Salmerón, Nuria
collection PubMed
description Dramatic decreases of chinstrap penguin populations across the Antarctic Peninsula (AP) are thought to be influenced by climate-driven changes affecting its main prey, the Antarctic krill, however, empirical evidence supporting such hypotheses are scarce. By coupling data on breeding chinstrap penguins, environmental remote sensing and estimates of krill acoustic density, we were able to demonstrate that penguins substantially increased their foraging effort in a year of low krill availability, with consequent reduction in breeding success. A winter of low sea ice cover followed by a summer/spring with stronger wind and lower marine productivity explained the lower and deeper krill availability. Our results highlight the importance of environmental variability on penguin populations, as variability is expected to increase under climate change, affecting foraging behaviour responses.
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spelling pubmed-100662202023-04-02 Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula Salmerón, Nuria Belle, Solenne Cruz, Francisco Santa Alegria, Nicolás Finger, Júlia Victória Grohmann Corá, Denyelle Hennayra Petry, Maria Virginia Hernández, Cristina Cárdenas, César A. Krüger, Lucas Sci Rep Article Dramatic decreases of chinstrap penguin populations across the Antarctic Peninsula (AP) are thought to be influenced by climate-driven changes affecting its main prey, the Antarctic krill, however, empirical evidence supporting such hypotheses are scarce. By coupling data on breeding chinstrap penguins, environmental remote sensing and estimates of krill acoustic density, we were able to demonstrate that penguins substantially increased their foraging effort in a year of low krill availability, with consequent reduction in breeding success. A winter of low sea ice cover followed by a summer/spring with stronger wind and lower marine productivity explained the lower and deeper krill availability. Our results highlight the importance of environmental variability on penguin populations, as variability is expected to increase under climate change, affecting foraging behaviour responses. Nature Publishing Group UK 2023-03-31 /pmc/articles/PMC10066220/ /pubmed/37002269 http://dx.doi.org/10.1038/s41598-023-32352-7 Text en © The Author(s) 2023 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Salmerón, Nuria
Belle, Solenne
Cruz, Francisco Santa
Alegria, Nicolás
Finger, Júlia Victória Grohmann
Corá, Denyelle Hennayra
Petry, Maria Virginia
Hernández, Cristina
Cárdenas, César A.
Krüger, Lucas
Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula
title Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula
title_full Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula
title_fullStr Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula
title_full_unstemmed Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula
title_short Contrasting environmental conditions precluded lower availability of Antarctic krill affecting breeding chinstrap penguins in the Antarctic Peninsula
title_sort contrasting environmental conditions precluded lower availability of antarctic krill affecting breeding chinstrap penguins in the antarctic peninsula
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10066220/
https://www.ncbi.nlm.nih.gov/pubmed/37002269
http://dx.doi.org/10.1038/s41598-023-32352-7
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