Seabird associations with mesoscale eddies: The subtropical Indian Ocean
We investigated seabird-eddy associations in subtropical waters of the southern Indian Ocean during a summer (January) cruise from Amsterdam Island to Western Australia. To determine habitat associations and to enable predictions about foraging strategies, we related the distributions of satellite a...
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ftcdlib:oai:escholarship.org/ark:/13030/qt37z9q6p3 2023-05-15T13:22:30+02:00 Seabird associations with mesoscale eddies: The subtropical Indian Ocean Hyrenbach, KD Veit, RR Weimerskirch, H Hunt, GL 271 - 279 2006-10-23 application/pdf https://escholarship.org/uc/item/37z9q6p3 unknown eScholarship, University of California qt37z9q6p3 https://escholarship.org/uc/item/37z9q6p3 CC-BY CC-BY Marine Ecology Progress Series, vol 324 altimetry Indian Ocean mesoscale eddies remote sensing seabirds sea surface height anomalies Marine Biology & Hydrobiology Ecology Zoology Oceanography article 2006 ftcdlib 2020-03-20T23:55:48Z We investigated seabird-eddy associations in subtropical waters of the southern Indian Ocean during a summer (January) cruise from Amsterdam Island to Western Australia. To determine habitat associations and to enable predictions about foraging strategies, we related the distributions of satellite altimetry data (sea surface height anomalies) to the 3 most abundant taxa in the study area: terns (sooty Sterna fuscata and bridled S. anaethetus) and shearwaters (wedge-tailed Puffinus pacificus) were significantly more common and numerous within convergence zones. However, a step-wise logistic regression model revealed that these seabirds were more strongly associated with other habitat variables, including the distance to breeding colonies and warm sea surface temperature conditions. Great-winged petrels Pterodroma macroptera were widely scattered and did not show associations with convergences or divergences. These contrasting results highlight the need to consider smaller-scale hydrographic features, such as frontal systems, when guantifying seabird associations with mesoscale eddies. Large-scale patterns of ocean circulation and mesoscale variability also seem to play a critical role in determining the extent of seabird-eddy associations. In contrast with previous studies, which have focused on dynamic frontal regions and energetic current systems, we surveyed a region of weak mesoscale variability north of the Subtropical Convergence zone. © Inter-Research 2006. Article in Journal/Newspaper Amsterdam Island University of California: eScholarship Indian |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
altimetry Indian Ocean mesoscale eddies remote sensing seabirds sea surface height anomalies Marine Biology & Hydrobiology Ecology Zoology Oceanography |
spellingShingle |
altimetry Indian Ocean mesoscale eddies remote sensing seabirds sea surface height anomalies Marine Biology & Hydrobiology Ecology Zoology Oceanography Hyrenbach, KD Veit, RR Weimerskirch, H Hunt, GL Seabird associations with mesoscale eddies: The subtropical Indian Ocean |
topic_facet |
altimetry Indian Ocean mesoscale eddies remote sensing seabirds sea surface height anomalies Marine Biology & Hydrobiology Ecology Zoology Oceanography |
description |
We investigated seabird-eddy associations in subtropical waters of the southern Indian Ocean during a summer (January) cruise from Amsterdam Island to Western Australia. To determine habitat associations and to enable predictions about foraging strategies, we related the distributions of satellite altimetry data (sea surface height anomalies) to the 3 most abundant taxa in the study area: terns (sooty Sterna fuscata and bridled S. anaethetus) and shearwaters (wedge-tailed Puffinus pacificus) were significantly more common and numerous within convergence zones. However, a step-wise logistic regression model revealed that these seabirds were more strongly associated with other habitat variables, including the distance to breeding colonies and warm sea surface temperature conditions. Great-winged petrels Pterodroma macroptera were widely scattered and did not show associations with convergences or divergences. These contrasting results highlight the need to consider smaller-scale hydrographic features, such as frontal systems, when guantifying seabird associations with mesoscale eddies. Large-scale patterns of ocean circulation and mesoscale variability also seem to play a critical role in determining the extent of seabird-eddy associations. In contrast with previous studies, which have focused on dynamic frontal regions and energetic current systems, we surveyed a region of weak mesoscale variability north of the Subtropical Convergence zone. © Inter-Research 2006. |
format |
Article in Journal/Newspaper |
author |
Hyrenbach, KD Veit, RR Weimerskirch, H Hunt, GL |
author_facet |
Hyrenbach, KD Veit, RR Weimerskirch, H Hunt, GL |
author_sort |
Hyrenbach, KD |
title |
Seabird associations with mesoscale eddies: The subtropical Indian Ocean |
title_short |
Seabird associations with mesoscale eddies: The subtropical Indian Ocean |
title_full |
Seabird associations with mesoscale eddies: The subtropical Indian Ocean |
title_fullStr |
Seabird associations with mesoscale eddies: The subtropical Indian Ocean |
title_full_unstemmed |
Seabird associations with mesoscale eddies: The subtropical Indian Ocean |
title_sort |
seabird associations with mesoscale eddies: the subtropical indian ocean |
publisher |
eScholarship, University of California |
publishDate |
2006 |
url |
https://escholarship.org/uc/item/37z9q6p3 |
op_coverage |
271 - 279 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
Marine Ecology Progress Series, vol 324 |
op_relation |
qt37z9q6p3 https://escholarship.org/uc/item/37z9q6p3 |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766365209404899328 |