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Current wintering habitat of an endemic seabird of Réunion Island, Barau’s petrel Pterodroma baraui, and predicted changes induced by global warming

2016; Inter-Research; Volume: 550; Linguagem: Inglês

10.3354/meps11710

1616-1599

Benjamin Legrand, A Benneveau, Audrey Jaeger, P. Pinet, Gaël Potin, Sébastien Jaquemet, Matthieu Le Corre,

Avian ecology and behavior

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 550:235-248 (2016) - DOI: https://doi.org/10.3354/meps11710 Current wintering habitat of an endemic seabird of Réunion Island, Barau’s petrel Pterodroma baraui, and predicted changes induced by global warming B. Legrand1,*, A. Benneveau1, A. Jaeger1, P. Pinet1,2, G. Potin1, S. Jaquemet1, M. Le Corre1 1Université de La Ré́union, UMR 9220 UR CNRS IRD ENTROPIE, 97715 Saint Denis messag cedex 9, Ré́union Island, France 2Parc National de La Réunion, 258 rue de La République, 97431 Plaine des Palmistes, Ré́union Island, France *Corresponding author: brice.legrand@univ-reunion.fr ABSTRACT: The impacts of global climate change on marine ecosystems are of increasing concern. Because of their restricted distribution, endemic organisms are especially sensitive. In this context, we investigated the impact of climate change on the wintering habitats of Barau’s petrel Pterodroma baraui, an Endangered endemic species of Réunion Island (western Indian Ocean). Birds were tracked with Global Location Sensing loggers, over 3 different years. We built suitability models to determine the environmental drivers that influence habitat selection. These models were then used to predict changes in the location and size of the wintering habitats in 2100. After breeding, Barau’s petrels consistently migrate eastward to a large oceanic area in the central and eastern Indian Ocean (centred on the Ninety East Ridge). Three main factors best predicted the presence of wintering Barau’s petrels: surface wind speed, sea surface temperature and chlorophyll a concentration. Adult Barau’s petrels tended to select cool, oligotrophic areas with stronger than average winds. Based on these variables, we identified 3 distinct areas of high suitability. This suitable habitat is predicted to shift westward and southward in the future, as a consequence of global warming, and the surface of total suitable habitat for wintering Barau’s petrels may be reduced by an average of 11% by the year 2100. These predictions are discussed in terms of biological conservation and adaptation to climate change. Our study is among the first to demonstrate the utility of using current tracking data and habitat modelling to predict the long-term effects of climate change on marine birds. KEY WORDS: Barau’s petrel · Indian Ocean · Global Location Sensing · GLS · Habitat suitability model · HSM · Ensemble model Full text in pdf format Supplementary material PreviousNextCite this article as: Legrand B, Benneveau A, Jaeger A, Pinet P, Potin G, Jaquemet S, Le Corre M (2016) Current wintering habitat of an endemic seabird of Réunion Island, Barau’s petrel Pterodroma baraui, and predicted changes induced by global warming. Mar Ecol Prog Ser 550:235-248. https://doi.org/10.3354/meps11710 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 550. Online publication date: May 25, 2016 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2016 Inter-Research.