Environmental conditions and life history constraints determine foraging range in breeding Adélie penguins
نویسندگان
چکیده
منابع مشابه
Adélie penguins and environmental change.
IN THEIR REVIEW “ENVIRONMENTAL CHANGE and Antarctic seabird populations,” (Special Issue on Polar Science, 30 Aug., p. 1510), J. P. Croxall et al. describe paradoxes, many of which exist only because of a limited review of available information. Stating that the paleoecological record shows close correspondence between ice cover and the presence of Adélie penguins is correct (1), but claiming t...
متن کاملHabitat use and sex-specific foraging behaviour of Adélie penguins throughout the breeding season in Adélie Land, East Antarctica
BACKGROUND Marine predators are ecosystem sentinels because their foraging behaviour and reproductive success reflect the variability occurring in the lower trophic levels of the ecosystem. In an era of environmental change, monitoring top predators species can provide valuable insights into the zones of ecological importance that need to be protected. In this context, we monitored the Adélie p...
متن کاملMetabolic alkalosis due to feeding chicks in breeding Adélie penguins Pygoscelis adeliae under natural conditions.
Prolonged abnormal vomiting causes metabolic alkalosis. Many seabirds are known to feed their chicks by regurgitation. We hypothesized that metabolic alkalosis occurs in seabirds even under natural conditions during the breeding season. Adélie penguins Pygoscelis adeliae feed their chicks by regurgitating food for 50-60 d until the chicks fledge. In this study, the concentrations of Cl(-), HCO(...
متن کاملLarger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins
For land-breeding marine organisms such as seabirds, knowledge about their habitat use has mainly been gained through studies of breeding individuals that are constrained to return frequently to their breeding grounds. In this study we set out to measure whether: a) habitat selection in the non-breeding period predicts habitat selection in the breeding period, and b) whether breeding individual...
متن کاملAdélie penguins coping with environmental change: results from a natural experiment at the edge of their breeding range
Katie M. Dugger*, Grant Ballard, David G. Ainley, Phil O’B. Lyver and Casey Schine 1 U.S. Geological Survey, Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, USA 2 Point Blue Conservation Science, Petaluma, CA, USA 3 H.T. Harvey and Associates, Los Gatos, CA, USA 4 Landcare Research, Lincoln, New Zealand 5 Departme...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2006
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps310247