Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands.
The Austral Ocean still hosts a great population of marine predators (i.e. penguins, albatross, and seals). Despite well studied, the functional approach investigating the relationship between prey and predators in the marine ecosystem is still poorly known. Knowledge on habitat selection and use of...
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Format: | Doctoral or Postdoctoral Thesis |
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Online Access: | https://hal.science/tel-01380737 https://hal.science/tel-01380737/document https://hal.science/tel-01380737/file/Bon_Cecile.pdf |
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ftunivrochelle:oai:HAL:tel-01380737v1 2024-02-11T10:02:15+01:00 Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. STRATEGIES DE RECHERCHE ALIMENTAIRE D'UN PREDATEUR PLONGEUR EN PERIODE DE REPRODUCTION : LE GORFOU MACARONI DES ILES CROZET ET KERGUELEN Bon, Cécile Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle BOST Charles-André (bost@cebc.cnrs.fr) 2016-03-11 https://hal.science/tel-01380737 https://hal.science/tel-01380737/document https://hal.science/tel-01380737/file/Bon_Cecile.pdf fr fre HAL CCSD tel-01380737 https://hal.science/tel-01380737 https://hal.science/tel-01380737/document https://hal.science/tel-01380737/file/Bon_Cecile.pdf info:eu-repo/semantics/OpenAccess https://hal.science/tel-01380737 Ecologie, Environnement. Université de La Rochelle, 2016. Français. ⟨NNT : ⟩ ecology foraging strategies oceanographic features breeding cycle penguins southern ocean habitats stratégies d’approvisionnement écologie comportementale cycle de reproduction manchots océan austral [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology info:eu-repo/semantics/doctoralThesis Theses 2016 ftunivrochelle 2024-01-23T23:35:41Z The Austral Ocean still hosts a great population of marine predators (i.e. penguins, albatross, and seals). Despite well studied, the functional approach investigating the relationship between prey and predators in the marine ecosystem is still poorly known. Knowledge on habitat selection and use of marine species is essential to better understand their ecology and behaviour. The knowledge about the ecology of key species is essential to characterise and identify the areas to protect and to predict the future of populations that may be affected by global changes. This is particularly true in an area where the natural ecosystems are more and more perturbed by anthropogenic activities (i.e. over-fishing, pollution, and climate change).The Macaroni penguin is the most abundant penguin species in the Austral Ocean (> 6 millions pairs). It is also the biggest consumer of secondary resources, in terms of biomass, in the world. Over the past 30 years the Macaroni penguin populations situated in South Georgia and Marion Island suffered of 30% population decline. At the moment, Kerguelen and Crozet Islands (French Southern Territories) still host more than 50% of their global population, however the foraging behaviour of this species is still poorly known.The objective of this research is to study the different foraging behaviour strategies of a pelagic seabird: the Macaroni penguin Eudyptes chrysoplophus during its whole breeding cycle (incubation, brood, crèche). The populations’object of study breed in different oceanographic conditions: the Kerguelen and Crozet archipelagos.The variation in foraging behaviour driven by energetic constraints, which is associated to the reproduction and to the biological production, has been studied in details.Telemetry data (i e. trajectories and diving behaviour) combined with environmental data obtained by remote sensing allowed determining that:1) Foraging strategies of Macaroni penguin breeding in two different locations differ in terms of movement, foraging effort and foraging ... Doctoral or Postdoctoral Thesis Austral Ocean Crozet Islands Kerguelen Islands Macaroni penguin Marion Island Southern Ocean HAL - Université de La Rochelle Southern Ocean Austral Kerguelen Kerguelen Islands Manchots ENVELOPE(141.397,141.397,-66.811,-66.811) Austral Ocean ENVELOPE(90.000,90.000,-60.000,-60.000) |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
French |
topic |
ecology foraging strategies oceanographic features breeding cycle penguins southern ocean habitats stratégies d’approvisionnement écologie comportementale cycle de reproduction manchots océan austral [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology |
spellingShingle |
ecology foraging strategies oceanographic features breeding cycle penguins southern ocean habitats stratégies d’approvisionnement écologie comportementale cycle de reproduction manchots océan austral [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology Bon, Cécile Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. |
topic_facet |
ecology foraging strategies oceanographic features breeding cycle penguins southern ocean habitats stratégies d’approvisionnement écologie comportementale cycle de reproduction manchots océan austral [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology |
description |
The Austral Ocean still hosts a great population of marine predators (i.e. penguins, albatross, and seals). Despite well studied, the functional approach investigating the relationship between prey and predators in the marine ecosystem is still poorly known. Knowledge on habitat selection and use of marine species is essential to better understand their ecology and behaviour. The knowledge about the ecology of key species is essential to characterise and identify the areas to protect and to predict the future of populations that may be affected by global changes. This is particularly true in an area where the natural ecosystems are more and more perturbed by anthropogenic activities (i.e. over-fishing, pollution, and climate change).The Macaroni penguin is the most abundant penguin species in the Austral Ocean (> 6 millions pairs). It is also the biggest consumer of secondary resources, in terms of biomass, in the world. Over the past 30 years the Macaroni penguin populations situated in South Georgia and Marion Island suffered of 30% population decline. At the moment, Kerguelen and Crozet Islands (French Southern Territories) still host more than 50% of their global population, however the foraging behaviour of this species is still poorly known.The objective of this research is to study the different foraging behaviour strategies of a pelagic seabird: the Macaroni penguin Eudyptes chrysoplophus during its whole breeding cycle (incubation, brood, crèche). The populations’object of study breed in different oceanographic conditions: the Kerguelen and Crozet archipelagos.The variation in foraging behaviour driven by energetic constraints, which is associated to the reproduction and to the biological production, has been studied in details.Telemetry data (i e. trajectories and diving behaviour) combined with environmental data obtained by remote sensing allowed determining that:1) Foraging strategies of Macaroni penguin breeding in two different locations differ in terms of movement, foraging effort and foraging ... |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle BOST Charles-André (bost@cebc.cnrs.fr) |
format |
Doctoral or Postdoctoral Thesis |
author |
Bon, Cécile |
author_facet |
Bon, Cécile |
author_sort |
Bon, Cécile |
title |
Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. |
title_short |
Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. |
title_full |
Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. |
title_fullStr |
Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. |
title_full_unstemmed |
Foraging Strategy of a diving marine predator during the breeding season: the macaroni penguin on Crozet and Kerguelen islands. |
title_sort |
foraging strategy of a diving marine predator during the breeding season: the macaroni penguin on crozet and kerguelen islands. |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/tel-01380737 https://hal.science/tel-01380737/document https://hal.science/tel-01380737/file/Bon_Cecile.pdf |
long_lat |
ENVELOPE(141.397,141.397,-66.811,-66.811) ENVELOPE(90.000,90.000,-60.000,-60.000) |
geographic |
Southern Ocean Austral Kerguelen Kerguelen Islands Manchots Austral Ocean |
geographic_facet |
Southern Ocean Austral Kerguelen Kerguelen Islands Manchots Austral Ocean |
genre |
Austral Ocean Crozet Islands Kerguelen Islands Macaroni penguin Marion Island Southern Ocean |
genre_facet |
Austral Ocean Crozet Islands Kerguelen Islands Macaroni penguin Marion Island Southern Ocean |
op_source |
https://hal.science/tel-01380737 Ecologie, Environnement. Université de La Rochelle, 2016. Français. ⟨NNT : ⟩ |
op_relation |
tel-01380737 https://hal.science/tel-01380737 https://hal.science/tel-01380737/document https://hal.science/tel-01380737/file/Bon_Cecile.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790598177799274496 |