Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island
Marine environments experience seasonal variation in physical and biological parameters, with consequent changes in predator distributions. During the breeding period, proximity to suitable feeding sites is essential for central place foragers, whereas during the non-breeding period their distributi...
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2010
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Online Access: | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10387 https://doi.org/10.3354/meps08785 |
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ftufz:oai:ufz.de:10387 2023-12-10T09:43:02+01:00 Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island Péron, C. Delord, K. Phillips, R.A. Charbonnier, Y. Marteau, C. Louzao, Maite Weimerskirch, H. 2010 application/pdf https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10387 https://doi.org/10.3354/meps08785 en eng Inter-Research, Oldendorf/Luhe Marine Ecology-Progress Series 416;; 267 - 284 https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10387 https://dx.doi.org/10.3354/meps08785 info:eu-repo/semantics/closedAccess ISSN: 0171-8630 Foraging behaviour Activity Breeding Non-breeding ground Upwelling Sea ice Bycatch Geolocation Satellite tracking info:eu-repo/semantics/article https://purl.org/dc/dcmitype/Text 2010 ftufz https://doi.org/10.3354/meps08785 2023-11-12T23:31:06Z Marine environments experience seasonal variation in physical and biological parameters, with consequent changes in predator distributions. During the breeding period, proximity to suitable feeding sites is essential for central place foragers, whereas during the non-breeding period their distribution is relatively unconstrained. We combined light-based geolocation and satellite tracking to investigate seasonal variation in foraging grounds and behaviour of white-chinned petrels from Kerguelen Island. Birds were associated with highly productive areas throughout the year. During breeding (summer), they performed long commuting trips from the colony to distant, productive Antarctic waters. Thereafter, birds migrated 5200 km westwards to the Benguela upwelling system off Namibia and South Africa to spend the winter. This seasonal shift of foraging grounds coincides with a change in activity patterns; much less time was spent in flight in winter than in summer. Individual variability in the locations of foraging zones and seasonal/daily activity patterns was low. Trip durations were shorter during chick-rearing than incubation, although birds often travelled as far or farther, tracking the gradual break up of pack ice. Habitat use models revealed an association with distance to sea-ice edge and chlorophyll a gradient during incubation, whereas sea surface temperature and chlorophyll a gradient best explained habitat use during chick rearing. White-chinned petrels are likely to overlap with other marine predators and fisheries throughout the year. Fishery bycatch constitutes the most significant direct threat to petrels at sea. Moreover, future climate-induced reductions in productivity could affect birds year-round. Article in Journal/Newspaper Antarc* Antarctic Sea ice UFZ - Publication Index (Helmholtz-Centre for Environmental Research) Antarctic Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Marine Ecology Progress Series 416 267 284 |
institution |
Open Polar |
collection |
UFZ - Publication Index (Helmholtz-Centre for Environmental Research) |
op_collection_id |
ftufz |
language |
English |
topic |
Foraging behaviour Activity Breeding Non-breeding ground Upwelling Sea ice Bycatch Geolocation Satellite tracking |
spellingShingle |
Foraging behaviour Activity Breeding Non-breeding ground Upwelling Sea ice Bycatch Geolocation Satellite tracking Péron, C. Delord, K. Phillips, R.A. Charbonnier, Y. Marteau, C. Louzao, Maite Weimerskirch, H. Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island |
topic_facet |
Foraging behaviour Activity Breeding Non-breeding ground Upwelling Sea ice Bycatch Geolocation Satellite tracking |
description |
Marine environments experience seasonal variation in physical and biological parameters, with consequent changes in predator distributions. During the breeding period, proximity to suitable feeding sites is essential for central place foragers, whereas during the non-breeding period their distribution is relatively unconstrained. We combined light-based geolocation and satellite tracking to investigate seasonal variation in foraging grounds and behaviour of white-chinned petrels from Kerguelen Island. Birds were associated with highly productive areas throughout the year. During breeding (summer), they performed long commuting trips from the colony to distant, productive Antarctic waters. Thereafter, birds migrated 5200 km westwards to the Benguela upwelling system off Namibia and South Africa to spend the winter. This seasonal shift of foraging grounds coincides with a change in activity patterns; much less time was spent in flight in winter than in summer. Individual variability in the locations of foraging zones and seasonal/daily activity patterns was low. Trip durations were shorter during chick-rearing than incubation, although birds often travelled as far or farther, tracking the gradual break up of pack ice. Habitat use models revealed an association with distance to sea-ice edge and chlorophyll a gradient during incubation, whereas sea surface temperature and chlorophyll a gradient best explained habitat use during chick rearing. White-chinned petrels are likely to overlap with other marine predators and fisheries throughout the year. Fishery bycatch constitutes the most significant direct threat to petrels at sea. Moreover, future climate-induced reductions in productivity could affect birds year-round. |
format |
Article in Journal/Newspaper |
author |
Péron, C. Delord, K. Phillips, R.A. Charbonnier, Y. Marteau, C. Louzao, Maite Weimerskirch, H. |
author_facet |
Péron, C. Delord, K. Phillips, R.A. Charbonnier, Y. Marteau, C. Louzao, Maite Weimerskirch, H. |
author_sort |
Péron, C. |
title |
Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island |
title_short |
Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island |
title_full |
Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island |
title_fullStr |
Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island |
title_full_unstemmed |
Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island |
title_sort |
seasonal variation in oceanographic habitat and behaviour of white-chinned petrels procellaria aequinoctialis from kerguelen island |
publisher |
Inter-Research, Oldendorf/Luhe |
publishDate |
2010 |
url |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10387 https://doi.org/10.3354/meps08785 |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Antarctic Kerguelen Kerguelen Island |
geographic_facet |
Antarctic Kerguelen Kerguelen Island |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
ISSN: 0171-8630 |
op_relation |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10387 https://dx.doi.org/10.3354/meps08785 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.3354/meps08785 |
container_title |
Marine Ecology Progress Series |
container_volume |
416 |
container_start_page |
267 |
op_container_end_page |
284 |
_version_ |
1784886154632364032 |