A 3,000-year record of penguin populations

Liguang Sun (), Zhouqing Xie and Junlin Zhao
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Liguang Sun: Institute of Polar Environment, University of Science and Technology of China
Zhouqing Xie: Institute of Polar Environment, University of Science and Technology of China
Junlin Zhao: Institute of Polar Environment, University of Science and Technology of China

Nature, 2000, vol. 407, issue 6806, 858-858

Abstract: Abstract There are no historical records of changing penguin populations in the maritime Antarctic1,2. Here we analyse3,4 the concentration of 'bio-elements' in a lake-sediment core dating back approximately 3,000 radiocarbon years. We found that the deposition of penguin droppings had a significant effect on the geochemical composition of the sediment core. Changes in sediment geochemistry reflect fluctuations in penguin numbers and suggest that variations in climate had an impact on penguin populations, which peaked somewhere between 1,400 and 1,800 years ago.

Date: 2000
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DOI: 10.1038/35038163

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