Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions
International audience Shifts in the diet of top predators can be linked to changes in environmental conditions. In this study, we tested relationships between environmental variation and seasonal changes in diet of a top predator, the grey-headed albatross Thalassarche chrysostoma, breeding at Bird...
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Online Access: | https://doi.org/10.1007/s00227-013-2212-x https://hal.archives-ouvertes.fr/hal-00831538 |
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fttriple:oai:gotriple.eu:10670/1.ohs8n9 2023-05-15T13:33:04+02:00 Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions Xavier, J.C. Louzao, Maite Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, John P. Phillips, Richard A. British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Institute of Marine Research University of Coimbra Portugal (UC) Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ) 2013-01-01 https://doi.org/10.1007/s00227-013-2212-x https://hal.archives-ouvertes.fr/hal-00831538 en eng HAL CCSD Springer Verlag hal-00831538 doi:10.1007/s00227-013-2212-x 10670/1.ohs8n9 https://hal.archives-ouvertes.fr/hal-00831538 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology Marine Biology, Springer Verlag, 2013, 160, pp.1597-1606. ⟨10.1007/s00227-013-2212-x⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.1007/s00227-013-2212-x 2023-01-22T17:32:44Z International audience Shifts in the diet of top predators can be linked to changes in environmental conditions. In this study, we tested relationships between environmental variation and seasonal changes in diet of a top predator, the grey-headed albatross Thalassarche chrysostoma, breeding at Bird Island, South Georgia in an austral summer of 1999/2000. Oceanographic conditions in that year around South Georgia were abnormal (i.e. anomalously high sea surface temperature to a relative 19-year long-term mean). The diet of grey-headed albatrosses showed high seasonal variation, shifting from cephalopods (42.9 % by mass) in late February to Antarctic krill Euphausia superba (58.3 %) in late April, and grey-headed albatrosses breeding performance was low (16.8 %). This study shows these albatrosses did not manage to find sufficient alternative prey and highlight the risk to top predators if there is an increase in the frequency or severity of food shortages in Antarctic waters. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Bird Island Euphausia superba Unknown Antarctic Austral Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Marine Biology 160 7 1597 1606 |
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English |
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envir geo |
spellingShingle |
envir geo Xavier, J.C. Louzao, Maite Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, John P. Phillips, Richard A. Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
topic_facet |
envir geo |
description |
International audience Shifts in the diet of top predators can be linked to changes in environmental conditions. In this study, we tested relationships between environmental variation and seasonal changes in diet of a top predator, the grey-headed albatross Thalassarche chrysostoma, breeding at Bird Island, South Georgia in an austral summer of 1999/2000. Oceanographic conditions in that year around South Georgia were abnormal (i.e. anomalously high sea surface temperature to a relative 19-year long-term mean). The diet of grey-headed albatrosses showed high seasonal variation, shifting from cephalopods (42.9 % by mass) in late February to Antarctic krill Euphausia superba (58.3 %) in late April, and grey-headed albatrosses breeding performance was low (16.8 %). This study shows these albatrosses did not manage to find sufficient alternative prey and highlight the risk to top predators if there is an increase in the frequency or severity of food shortages in Antarctic waters. |
author2 |
British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Institute of Marine Research University of Coimbra Portugal (UC) Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ) |
format |
Article in Journal/Newspaper |
author |
Xavier, J.C. Louzao, Maite Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, John P. Phillips, Richard A. |
author_facet |
Xavier, J.C. Louzao, Maite Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, John P. Phillips, Richard A. |
author_sort |
Xavier, J.C. |
title |
Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
title_short |
Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
title_full |
Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
title_fullStr |
Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
title_full_unstemmed |
Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
title_sort |
seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://doi.org/10.1007/s00227-013-2212-x https://hal.archives-ouvertes.fr/hal-00831538 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Antarctic Austral Bird Island |
geographic_facet |
Antarctic Austral Bird Island |
genre |
Antarc* Antarctic Antarctic Krill Bird Island Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Bird Island Euphausia superba |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology Marine Biology, Springer Verlag, 2013, 160, pp.1597-1606. ⟨10.1007/s00227-013-2212-x⟩ |
op_relation |
hal-00831538 doi:10.1007/s00227-013-2212-x 10670/1.ohs8n9 https://hal.archives-ouvertes.fr/hal-00831538 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1007/s00227-013-2212-x |
container_title |
Marine Biology |
container_volume |
160 |
container_issue |
7 |
container_start_page |
1597 |
op_container_end_page |
1606 |
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1766038224461889536 |