Variability in krill biomass links harvesting and climate warming to penguin population changes in Antarctica

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The West Antarctic Peninsula (WAP) and adjacent Scotia Sea support abundant wildlife populations, many of which were nearly extirpated by humans. This region is also among the fastest-warming areas on the planet, with 5–6 °C increases in mean winter air temperatures and associated decreases in winter sea-ice cover. These biological and physical perturbations have affected the ecosystem profoundly.

http://www.pnas.org/content/early/2011/04/06/1016560108.abstract

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