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Foraging niches of three Diomedea albatrosses

2002; Inter-Research; Volume: 231; Linguagem: Inglês

10.3354/meps231269

1616-1599

DG Nicholls, CJR Robertson, P. A. Prince, MD Murray, KJ Walker, G. P. Elliott,

Marine and fisheries research

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 231:269-277 (2002) - doi:10.3354/meps231269 Foraging niches of three Diomedea albatrosses D. G. Nicholls1,*, C. J. R. Robertson2, P. A. Prince3,Ý, M. D. Murray4, K. J. Walker5, G. P. Elliott5 1Chisholm Institute, PO Box 684, Dandenong, Victoria 3175, Australia 2Wild Press, PO Box 12397, Wellington 6038, New Zealand 3British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, United Kingdom 417 Ashmore Avenue, Pymble, New South Wales 2073, Australia 5549 Rocks Road, Nelson, New Zealand *E-mail: d.nicholls@chisholm.vic.edu.au Ý Deceased ABSTRACT: Three species of biennial breeding southern hemisphere albatrosses‹Diomedea sanfordi from the Chatham Islands, D. antipodensis from Antipodes Island and D. exulans from South Georgia‹were tracked using CLS-Argos satellite system during the 1990s. Harness attachment and duty cycling of transmitters enabled long-term deployments covering both the breeding and non-breeding ranges. The feeding ranges for breeding birds of each species were different. D. sanfordi foraged over continental shelves to the shelf edge, whereas D. antipodensis and D. exulans ranged widely over deep water to the shelf edge. Mapping of satellite-determined locations for D. sanfordi and D. antipodensis showed that the demarcation was between the 1000 and 2000 m undersea contour. Non-breeding D. sanfordi wintered over the Patagonian shelf or over the Chilean shelf. There they were virtually confined to seas over the continental shelves of <200 m depth, occasionally out to 1000 m, and on less steep slopes to 200 m depth. These data provide the best evidence yet of habitat preference and segregation consistent across breeding and non-breeding seasons for closely related seabirds. KEY WORDS: Diomedea sp. · Great albatrosses · Satellite tracking · Foraging · Non-breeding birds · Breeding birds Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 231. Online publication date: April 23, 2002 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2002 Inter-Research.