Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean
International audience Our objective was to understand how marine birds respond to oceanographic variability across the Southern Indian Ocean using data collected during an 16-day cruise (4-21 January 2003). We quantified concurrent water mass distributions, ocean productivity patterns, and seabird...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.science/hal-00266841 https://doi.org/10.1016/j.dsr.2007.05.002 |
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ftinsu:oai:HAL:hal-00266841v1 |
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openpolar |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Crozet Basin Species assemblages Remote sensing Seabirds Ocean productivity Oceanic fronts Community structure Indian Ocean [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Crozet Basin Species assemblages Remote sensing Seabirds Ocean productivity Oceanic fronts Community structure Indian Ocean [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes Hyrenbach, David K. Veit, Richard R. Weimerskirch, Henri Metzl, Nicolas Hunt Jr., George L. Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean |
topic_facet |
Crozet Basin Species assemblages Remote sensing Seabirds Ocean productivity Oceanic fronts Community structure Indian Ocean [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Our objective was to understand how marine birds respond to oceanographic variability across the Southern Indian Ocean using data collected during an 16-day cruise (4-21 January 2003). We quantified concurrent water mass distributions, ocean productivity patterns, and seabird distributions across a heterogeneous pelagic ecosystem from subtropical to sub-Antarctic waters. We surveyed 5155km and sighted 15,606 birds from 51 species, and used these data to investigate how seabirds respond to spatial variability in the structure and productivity of the ocean. We addressed two spatial scales: the structure of seabird communities across macro-mega scale (1000 s km) biogeographic domains, and their coarse-scale (10 s km) aggregation at hydrographic and bathymetric gradients. Both seabird density and species composition changed with latitudinal and onshore-offshore gradients in depth, water temperature, and chlorophyll-a concentration. The average seabird density increased across the subtropical convergence (STC) from 2.4 birdskm 2 in subtropical waters to 23.8 birdskm 2 in sub-Antarctic waters. The composition of the avifauna also differed across biogeographic domains. Prions (Pachyptila spp.) accounted for 57% of all sub-Antarctic birds, wedge-tailed shearwaters (Puffinus pacificus) accounted for 46% of all subtropical birds, and Indian Ocean yellow-nosed albatross (Thallasarche carteri) accounted for 32% of all birds in the STC. While surface feeders were the most abundant foraging guild across the study area, divers were disproportionately more numerous in the sub-Antarctic domain, and plungers were disproportionately more abundant in subtropical waters. Seabird densities were also higher within shallow shelf-slope regions, especially in sub-Antarctic waters, where large numbers of breeding seabirds concentrated. However, we did not find elevated seabird densities along the STC, suggesting that this broad frontal region is not a site of enhanced aggregation. |
author2 |
Duke University Marine Laboratory CSI-CUNY City University of New York New York (CUNY) Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Department of Ecology and Evolutionary Biology |
format |
Article in Journal/Newspaper |
author |
Hyrenbach, David K. Veit, Richard R. Weimerskirch, Henri Metzl, Nicolas Hunt Jr., George L. |
author_facet |
Hyrenbach, David K. Veit, Richard R. Weimerskirch, Henri Metzl, Nicolas Hunt Jr., George L. |
author_sort |
Hyrenbach, David K. |
title |
Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean |
title_short |
Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean |
title_full |
Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean |
title_fullStr |
Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean |
title_full_unstemmed |
Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean |
title_sort |
community structure across a large-scale ocean productivity gradient: marine bird assemblages of the southern indian ocean |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00266841 https://doi.org/10.1016/j.dsr.2007.05.002 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal.science/hal-00266841 Deep Sea Research Part I: Oceanographic Research Papers, 2007, 54 (7), pp.1129-1145. ⟨10.1016/j.dsr.2007.05.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2007.05.002 hal-00266841 https://hal.science/hal-00266841 doi:10.1016/j.dsr.2007.05.002 |
op_doi |
https://doi.org/10.1016/j.dsr.2007.05.002 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
54 |
container_issue |
7 |
container_start_page |
1129 |
op_container_end_page |
1145 |
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1797574285526564864 |
spelling |
ftinsu:oai:HAL:hal-00266841v1 2024-04-28T08:03:07+00:00 Community structure across a large-scale ocean productivity gradient: Marine bird assemblages of the Southern Indian Ocean Hyrenbach, David K. Veit, Richard R. Weimerskirch, Henri Metzl, Nicolas Hunt Jr., George L. Duke University Marine Laboratory CSI-CUNY City University of New York New York (CUNY) Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Department of Ecology and Evolutionary Biology 2007-05-22 https://hal.science/hal-00266841 https://doi.org/10.1016/j.dsr.2007.05.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2007.05.002 hal-00266841 https://hal.science/hal-00266841 doi:10.1016/j.dsr.2007.05.002 ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal.science/hal-00266841 Deep Sea Research Part I: Oceanographic Research Papers, 2007, 54 (7), pp.1129-1145. ⟨10.1016/j.dsr.2007.05.002⟩ Crozet Basin Species assemblages Remote sensing Seabirds Ocean productivity Oceanic fronts Community structure Indian Ocean [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2007 ftinsu https://doi.org/10.1016/j.dsr.2007.05.002 2024-04-05T00:42:11Z International audience Our objective was to understand how marine birds respond to oceanographic variability across the Southern Indian Ocean using data collected during an 16-day cruise (4-21 January 2003). We quantified concurrent water mass distributions, ocean productivity patterns, and seabird distributions across a heterogeneous pelagic ecosystem from subtropical to sub-Antarctic waters. We surveyed 5155km and sighted 15,606 birds from 51 species, and used these data to investigate how seabirds respond to spatial variability in the structure and productivity of the ocean. We addressed two spatial scales: the structure of seabird communities across macro-mega scale (1000 s km) biogeographic domains, and their coarse-scale (10 s km) aggregation at hydrographic and bathymetric gradients. Both seabird density and species composition changed with latitudinal and onshore-offshore gradients in depth, water temperature, and chlorophyll-a concentration. The average seabird density increased across the subtropical convergence (STC) from 2.4 birdskm 2 in subtropical waters to 23.8 birdskm 2 in sub-Antarctic waters. The composition of the avifauna also differed across biogeographic domains. Prions (Pachyptila spp.) accounted for 57% of all sub-Antarctic birds, wedge-tailed shearwaters (Puffinus pacificus) accounted for 46% of all subtropical birds, and Indian Ocean yellow-nosed albatross (Thallasarche carteri) accounted for 32% of all birds in the STC. While surface feeders were the most abundant foraging guild across the study area, divers were disproportionately more numerous in the sub-Antarctic domain, and plungers were disproportionately more abundant in subtropical waters. Seabird densities were also higher within shallow shelf-slope regions, especially in sub-Antarctic waters, where large numbers of breeding seabirds concentrated. However, we did not find elevated seabird densities along the STC, suggesting that this broad frontal region is not a site of enhanced aggregation. Article in Journal/Newspaper Antarc* Antarctic Institut national des sciences de l'Univers: HAL-INSU Deep Sea Research Part I: Oceanographic Research Papers 54 7 1129 1145 |