The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season
A central question in ecology is the understanding of the environmental change effects on organisms and on the ecosystem functioning. The Arctic and Antarctic warm faster than any other region on Earth, which has consequences on the sea-ice state and by extent on polar species which depend on it for...
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Language: | French |
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2020
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Online Access: | https://theses.hal.science/tel-03327950 https://theses.hal.science/tel-03327950/document https://theses.hal.science/tel-03327950/file/2020MICHELOT152538.pdf |
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ftunivnantes:oai:HAL:tel-03327950v1 2023-05-15T13:44:25+02:00 The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season Le manchot Adélie, sentinelle de la glace de mer : étude du comportement de recherche alimentaire en réponse aux variations environnementales en période de reproduction Michelot, Candice Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Université de La Rochelle Yan Ropert-Coudert 2020-09-18 https://theses.hal.science/tel-03327950 https://theses.hal.science/tel-03327950/document https://theses.hal.science/tel-03327950/file/2020MICHELOT152538.pdf fr fre HAL CCSD NNT: 2020LAROS009 tel-03327950 https://theses.hal.science/tel-03327950 https://theses.hal.science/tel-03327950/document https://theses.hal.science/tel-03327950/file/2020MICHELOT152538.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-03327950 Biologie animale. Université de La Rochelle, 2020. Français. ⟨NNT : 2020LAROS009⟩ Bio-logging Foraging activity Sentinel species East Antarctica MPA Adélie penguins Sea ice Manchots Adélie Glace de mer Activité alimentaire Espèce sentinelle Antarctique de l’Est AMP [SDV.BA]Life Sciences [q-bio]/Animal biology info:eu-repo/semantics/doctoralThesis Theses 2020 ftunivnantes 2023-01-03T23:58:00Z A central question in ecology is the understanding of the environmental change effects on organisms and on the ecosystem functioning. The Arctic and Antarctic warm faster than any other region on Earth, which has consequences on the sea-ice state and by extent on polar species which depend on it for their breeding and feeding activities. The main objective of my PhD was to determine the behavioural responses of a bio-indicator species, the Adélie penguin, during its foraging activity facing variable sea-ice conditions, at different species levels : individual, population, inter-population. We use a foraging activity dataset (GPS data, diet) on Adélie penguins obtained collected each year since 2010 in Terre Adélie (East Antarctica), at each breeding season in several colonies. We highlight foraging behavioural variations in that species related to sea-ice conditions and dynamics, but similar responses between individuals and between colonies facing comparable environmental conditions. Our results highlight the importance of specific habitats and sea-ice conditions for an optimal foraging activity. We discuss about intrinsic and extrinsic factors at the origin of the observed variations, and of the implication of such variations on the reproductive behaviour of Adélie penguins. Those PhD results are replaced in a context of ecosystem conservation for the implementation of efficient protection measures based on the ecology of sentinel species. Une question centrale en écologie est la compréhension des effets des changements environnementaux sur les organismes et sur le fonctionnement des écosystèmes. L’Arctique et l’Antarctique se réchauffent plus rapidement que n’importe quelle autre région sur la planète, ce qui a des conséquences sur l’état de la glace de mer et par extension sur les espèces polaires qui en dépendent pour leur activité d’alimentation et de reproduction. L’objectif principal de cette thèse est de déterminer les réponses comportementales d’une espèce bio-indicatrice, le manchot Adélie, lors de ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica Antarctique* Arctic East Antarctica Sea ice Université de Nantes: HAL-UNIV-NANTES Arctic Antarctic East Antarctica Terre Adélie ENVELOPE(139.000,139.000,-67.000,-67.000) Terre-Adélie ENVELOPE(138.991,138.991,-59.999,-59.999) Manchot ENVELOPE(141.400,141.400,-66.817,-66.817) Manchots ENVELOPE(141.397,141.397,-66.811,-66.811) |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
French |
topic |
Bio-logging Foraging activity Sentinel species East Antarctica MPA Adélie penguins Sea ice Manchots Adélie Glace de mer Activité alimentaire Espèce sentinelle Antarctique de l’Est AMP [SDV.BA]Life Sciences [q-bio]/Animal biology |
spellingShingle |
Bio-logging Foraging activity Sentinel species East Antarctica MPA Adélie penguins Sea ice Manchots Adélie Glace de mer Activité alimentaire Espèce sentinelle Antarctique de l’Est AMP [SDV.BA]Life Sciences [q-bio]/Animal biology Michelot, Candice The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
topic_facet |
Bio-logging Foraging activity Sentinel species East Antarctica MPA Adélie penguins Sea ice Manchots Adélie Glace de mer Activité alimentaire Espèce sentinelle Antarctique de l’Est AMP [SDV.BA]Life Sciences [q-bio]/Animal biology |
description |
A central question in ecology is the understanding of the environmental change effects on organisms and on the ecosystem functioning. The Arctic and Antarctic warm faster than any other region on Earth, which has consequences on the sea-ice state and by extent on polar species which depend on it for their breeding and feeding activities. The main objective of my PhD was to determine the behavioural responses of a bio-indicator species, the Adélie penguin, during its foraging activity facing variable sea-ice conditions, at different species levels : individual, population, inter-population. We use a foraging activity dataset (GPS data, diet) on Adélie penguins obtained collected each year since 2010 in Terre Adélie (East Antarctica), at each breeding season in several colonies. We highlight foraging behavioural variations in that species related to sea-ice conditions and dynamics, but similar responses between individuals and between colonies facing comparable environmental conditions. Our results highlight the importance of specific habitats and sea-ice conditions for an optimal foraging activity. We discuss about intrinsic and extrinsic factors at the origin of the observed variations, and of the implication of such variations on the reproductive behaviour of Adélie penguins. Those PhD results are replaced in a context of ecosystem conservation for the implementation of efficient protection measures based on the ecology of sentinel species. Une question centrale en écologie est la compréhension des effets des changements environnementaux sur les organismes et sur le fonctionnement des écosystèmes. L’Arctique et l’Antarctique se réchauffent plus rapidement que n’importe quelle autre région sur la planète, ce qui a des conséquences sur l’état de la glace de mer et par extension sur les espèces polaires qui en dépendent pour leur activité d’alimentation et de reproduction. L’objectif principal de cette thèse est de déterminer les réponses comportementales d’une espèce bio-indicatrice, le manchot Adélie, lors de ... |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Université de La Rochelle Yan Ropert-Coudert |
format |
Doctoral or Postdoctoral Thesis |
author |
Michelot, Candice |
author_facet |
Michelot, Candice |
author_sort |
Michelot, Candice |
title |
The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
title_short |
The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
title_full |
The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
title_fullStr |
The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
title_full_unstemmed |
The Adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
title_sort |
adélie penguin, sentinel of the sea-ice : study of the foraging behaviour in response to environmental variations during the breeding season |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://theses.hal.science/tel-03327950 https://theses.hal.science/tel-03327950/document https://theses.hal.science/tel-03327950/file/2020MICHELOT152538.pdf |
long_lat |
ENVELOPE(139.000,139.000,-67.000,-67.000) ENVELOPE(138.991,138.991,-59.999,-59.999) ENVELOPE(141.400,141.400,-66.817,-66.817) ENVELOPE(141.397,141.397,-66.811,-66.811) |
geographic |
Arctic Antarctic East Antarctica Terre Adélie Terre-Adélie Manchot Manchots |
geographic_facet |
Arctic Antarctic East Antarctica Terre Adélie Terre-Adélie Manchot Manchots |
genre |
Antarc* Antarctic Antarctica Antarctique* Arctic East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Antarctique* Arctic East Antarctica Sea ice |
op_source |
https://theses.hal.science/tel-03327950 Biologie animale. Université de La Rochelle, 2020. Français. ⟨NNT : 2020LAROS009⟩ |
op_relation |
NNT: 2020LAROS009 tel-03327950 https://theses.hal.science/tel-03327950 https://theses.hal.science/tel-03327950/document https://theses.hal.science/tel-03327950/file/2020MICHELOT152538.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766201506232532992 |