The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters
International audience Copepods are essential components of marine food webs worldwide. In the North Atlantic, they are thought to perform vertical migration and to remain at depths more than 500m during winter. We challenge this concept through a study of the winter feeding ecology of little auks (...
Published in: | Biology Letters |
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Online Access: | https://hal.science/hal-00527435 https://hal.science/hal-00527435/document https://hal.science/hal-00527435/file/Fort%20et%20al_2010%20Biol%20Lett.pdf https://doi.org/10.1098/rsbl.2010.0082 |
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ftecolephe:oai:HAL:hal-00527435v1 2024-05-19T07:28:04+00:00 The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters Fort, Jérôme Cherel, Yves Harding, Ann M.A. Egevang, Carsten Steen, Harald Kuntz, Grégoire Porter, Warren P Grémillet, David Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Alaska Pacific University Greenland Institute of Natural Resources (GINR) Norwegian Polar Institute Department of Zoology University of Wisconsin-Madison DST-NRF Centre of Excellence at the Percy FitzPatrick Institute University of Cape Town 2010-10-19 https://hal.science/hal-00527435 https://hal.science/hal-00527435/document https://hal.science/hal-00527435/file/Fort%20et%20al_2010%20Biol%20Lett.pdf https://doi.org/10.1098/rsbl.2010.0082 en eng HAL CCSD Royal Society, The info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2010.0082 hal-00527435 https://hal.science/hal-00527435 https://hal.science/hal-00527435/document https://hal.science/hal-00527435/file/Fort%20et%20al_2010%20Biol%20Lett.pdf doi:10.1098/rsbl.2010.0082 info:eu-repo/semantics/OpenAccess ISSN: 1744-9561 Biology Letters https://hal.science/hal-00527435 Biology Letters, 2010, 6, pp.682-684. ⟨10.1098/rsbl.2010.0082⟩ seabird marine food web food requirements energetic modelling stable isotope diving behaviour [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2010 ftecolephe https://doi.org/10.1098/rsbl.2010.0082 2024-04-25T02:04:16Z International audience Copepods are essential components of marine food webs worldwide. In the North Atlantic, they are thought to perform vertical migration and to remain at depths more than 500m during winter. We challenge this concept through a study of the winter feeding ecology of little auks (Alle alle), a highly abundant planktivorous seabird from the North Atlantic. By combining stable isotope and behavioural analyses, we strongly suggest that swarms of copepods are still available to their predators in water surface layers (less than 50m) during winter, even during short daylight periods. Using a new bioenergetic model, we estimate that the huge number (20–40 million birds) of little auks wintering off southwest Greenland consume 3600–7200 tonnes of copepods daily, strongly suggesting substantial zooplankton stocks in surface waters of the North Atlantic in the middle of the boreal winter Article in Journal/Newspaper Alle alle Greenland North Atlantic Copepods EPHE (Ecole pratique des hautes études, Paris): HAL Biology Letters 6 5 682 684 |
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Open Polar |
collection |
EPHE (Ecole pratique des hautes études, Paris): HAL |
op_collection_id |
ftecolephe |
language |
English |
topic |
seabird marine food web food requirements energetic modelling stable isotope diving behaviour [SDE]Environmental Sciences |
spellingShingle |
seabird marine food web food requirements energetic modelling stable isotope diving behaviour [SDE]Environmental Sciences Fort, Jérôme Cherel, Yves Harding, Ann M.A. Egevang, Carsten Steen, Harald Kuntz, Grégoire Porter, Warren P Grémillet, David The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters |
topic_facet |
seabird marine food web food requirements energetic modelling stable isotope diving behaviour [SDE]Environmental Sciences |
description |
International audience Copepods are essential components of marine food webs worldwide. In the North Atlantic, they are thought to perform vertical migration and to remain at depths more than 500m during winter. We challenge this concept through a study of the winter feeding ecology of little auks (Alle alle), a highly abundant planktivorous seabird from the North Atlantic. By combining stable isotope and behavioural analyses, we strongly suggest that swarms of copepods are still available to their predators in water surface layers (less than 50m) during winter, even during short daylight periods. Using a new bioenergetic model, we estimate that the huge number (20–40 million birds) of little auks wintering off southwest Greenland consume 3600–7200 tonnes of copepods daily, strongly suggesting substantial zooplankton stocks in surface waters of the North Atlantic in the middle of the boreal winter |
author2 |
Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Alaska Pacific University Greenland Institute of Natural Resources (GINR) Norwegian Polar Institute Department of Zoology University of Wisconsin-Madison DST-NRF Centre of Excellence at the Percy FitzPatrick Institute University of Cape Town |
format |
Article in Journal/Newspaper |
author |
Fort, Jérôme Cherel, Yves Harding, Ann M.A. Egevang, Carsten Steen, Harald Kuntz, Grégoire Porter, Warren P Grémillet, David |
author_facet |
Fort, Jérôme Cherel, Yves Harding, Ann M.A. Egevang, Carsten Steen, Harald Kuntz, Grégoire Porter, Warren P Grémillet, David |
author_sort |
Fort, Jérôme |
title |
The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters |
title_short |
The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters |
title_full |
The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters |
title_fullStr |
The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters |
title_full_unstemmed |
The feeding ecology of little auks raises questions about winter zooplankton stocks in North Atlantic surface waters |
title_sort |
feeding ecology of little auks raises questions about winter zooplankton stocks in north atlantic surface waters |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00527435 https://hal.science/hal-00527435/document https://hal.science/hal-00527435/file/Fort%20et%20al_2010%20Biol%20Lett.pdf https://doi.org/10.1098/rsbl.2010.0082 |
genre |
Alle alle Greenland North Atlantic Copepods |
genre_facet |
Alle alle Greenland North Atlantic Copepods |
op_source |
ISSN: 1744-9561 Biology Letters https://hal.science/hal-00527435 Biology Letters, 2010, 6, pp.682-684. ⟨10.1098/rsbl.2010.0082⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2010.0082 hal-00527435 https://hal.science/hal-00527435 https://hal.science/hal-00527435/document https://hal.science/hal-00527435/file/Fort%20et%20al_2010%20Biol%20Lett.pdf doi:10.1098/rsbl.2010.0082 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1098/rsbl.2010.0082 |
container_title |
Biology Letters |
container_volume |
6 |
container_issue |
5 |
container_start_page |
682 |
op_container_end_page |
684 |
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1799471002015498240 |