Adélie penguins coping with environmental change: results from a natural experiment at the edge of their breeding range
نویسندگان
چکیده
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 Department of Environmental Earth System Science, Stanford University, Stanford, CA, USA
منابع مشابه
Antarctic Climate Change: Extreme Events Disrupt Plastic Phenotypic Response in Adélie Penguins
In the context of predicted alteration of sea ice cover and increased frequency of extreme events, it is especially timely to investigate plasticity within Antarctic species responding to a key environmental aspect of their ecology: sea ice variability. Using 13 years of longitudinal data, we investigated the effect of sea ice concentration (SIC) on the foraging efficiency of Adélie penguins (P...
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Climate change is a major threat to global biodiversity. Antarctic ecosystems are no exception. Investigating past species responses to climatic events can distinguish natural from anthropogenic impacts. Climate change produces 'winners', species that benefit from these events and 'losers', species that decline or become extinct. Using molecular techniques, we assess the demographic history and...
متن کاملResponding to climate change: Adélie Penguins confront astronomical and ocean boundaries.
Long-distance migration enables many organisms to take advantage of lucrative breeding and feeding opportunities during summer at high latitudes and then to move to lower, more temperate latitudes for the remainder of the year. The latitudinal range of the Adélie Penguin (Pygoscelis adeliae) spans approximately 22 degrees. Penguins from northern colonies may not migrate, but due to the high lat...
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(...
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تاریخ انتشار 2014