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A 3,000-year record of penguin populations

Author

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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)

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.

Suggested Citation

  • Liguang Sun & Zhouqing Xie & Junlin Zhao, 2000. "A 3,000-year record of penguin populations," Nature, Nature, vol. 407(6806), pages 858-858, October.
    • Handle: RePEc:nat:nature:v:407:y:2000:i:6806:d:10.1038_35038163
    DOI: 10.1038/35038163
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