Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions
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...
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ftnerc:oai:nora.nerc.ac.uk:502952 2023-05-15T13:48:07+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, M. Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, J. P. Phillips, R. A. 2013-07 text http://nora.nerc.ac.uk/id/eprint/502952/ https://nora.nerc.ac.uk/id/eprint/502952/1/paper%20gha%20intra_NEW_March%202013_revised%20version.pdf https://doi.org/10.1007/s00227-013-2212-x en eng Springer https://nora.nerc.ac.uk/id/eprint/502952/1/paper%20gha%20intra_NEW_March%202013_revised%20version.pdf Xavier, J. C. orcid:0000-0002-9621-6660 Louzao, M.; Thorpe, S. E. orcid:0000-0002-5193-6955 Ward, P.; Hill, C.; Roberts, D.; Croxall, J. P.; Phillips, R. A. 2013 Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions. Marine Biology, 160 (7). 1597-1606. https://doi.org/10.1007/s00227-013-2212-x <https://doi.org/10.1007/s00227-013-2212-x> Publication - Article PeerReviewed 2013 ftnerc https://doi.org/10.1007/s00227-013-2212-x 2023-02-04T19:37:34Z 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 Natural Environment Research Council: NERC Open Research Archive Antarctic Austral Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Marine Biology 160 7 1597 1606 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
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 |
format |
Article in Journal/Newspaper |
author |
Xavier, J. C. Louzao, M. Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, J. P. Phillips, R. A. |
spellingShingle |
Xavier, J. C. Louzao, M. Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, J. P. Phillips, R. A. Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions |
author_facet |
Xavier, J. C. Louzao, M. Thorpe, S. E. Ward, P. Hill, C. Roberts, D. Croxall, J. P. Phillips, R. 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 |
Springer |
publishDate |
2013 |
url |
http://nora.nerc.ac.uk/id/eprint/502952/ https://nora.nerc.ac.uk/id/eprint/502952/1/paper%20gha%20intra_NEW_March%202013_revised%20version.pdf https://doi.org/10.1007/s00227-013-2212-x |
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_relation |
https://nora.nerc.ac.uk/id/eprint/502952/1/paper%20gha%20intra_NEW_March%202013_revised%20version.pdf Xavier, J. C. orcid:0000-0002-9621-6660 Louzao, M.; Thorpe, S. E. orcid:0000-0002-5193-6955 Ward, P.; Hill, C.; Roberts, D.; Croxall, J. P.; Phillips, R. A. 2013 Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions. Marine Biology, 160 (7). 1597-1606. https://doi.org/10.1007/s00227-013-2212-x <https://doi.org/10.1007/s00227-013-2212-x> |
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 |
_version_ |
1766248669236953088 |