Oecologia

, Volume 125, Issue 4, pp 483–488

Effect of sea-ice extent on adult survival of an Antarctic top predator: the snow petrel Pagodroma nivea

Authors

  • Christophe Barbraud
    • Centre d'Etudes Biologiques de Chizé, Centre National de la Recherche Scientifique, 79360 Beauvoir sur Niort, France
  • Henri Weimerskirch
    • Centre d'Etudes Biologiques de Chizé, Centre National de la Recherche Scientifique, 79360 Beauvoir sur Niort, France
  • Christophe Guinet
    • Centre d'Etudes Biologiques de Chizé, Centre National de la Recherche Scientifique, 79360 Beauvoir sur Niort, France
  • Pierre Jouventin
    • Centre d'Ecologie Fonctionnelle et Evolutive, Centre National de la Recherche Scientifique, 34293 Montpellier, France

DOI: 10.1007/s004420000481

Cite this article as:
Barbraud, C., Weimerskirch, H., Guinet, C. et al. Oecologia (2000) 125: 483. doi:10.1007/s004420000481

Abstract.

The snow petrel Pagodroma nivea is an obligate associate of sea-ice and one of the most abundant seabird species of the Southern Ocean. Time- and sex-specific annual variation in adult survival was estimated using capture-mark-recapture of petrels nesting at Pétrels Island, Terre Adélie, 1981–1997. On the basis of a regression analysis, 44% of the variation was linked inversely to the latitudinal extent of sea-ice during winter (June) in the region offshore of the study colony, where this population is likely to spend the non-breeding season. Monthly sea-surface temperature anomalies tended to influence adult survival but the relationship was not statistically significant. Why sea-ice extent should have such a critical effect on this species is yet to be explained, but the relationship, in the context of environmental warming and the consequent potential loss of Antarctic sea-ice, is an important one for this species.

Seabirds Sea-ice Snow petrel Southern Ocean Survival
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© Springer-Verlag 2000