Massive decline of the world's largest king penguin colony at Ile aux Cochons, Crozet

被引:20
作者
Weimerskirch, Henri [1 ]
Le Bouard, Fabrice [1 ,2 ]
Ryan, Peter G. [3 ]
Bost, C. A. [1 ]
机构
[1] Univ la Rochelle, CNRS, Ctr Etud Biol Chize, F-79360 Villiers En Bois, France
[2] TAAF, Reserve Natl Terres Australes Francaises, F-97420 St Pierre, La Reunion, France
[3] Univ Cape Town, DST NRF Ctr Excellence, Fitz Patrick Inst African Ornithol, ZA-7701 Rondebosch, South Africa
关键词
Aptenodytes patagonicus; satellite image; remote sensing; ANTARCTIC MARION ISLAND; ARCHIPELAGO; TRENDS;
D O I
10.1017/S0954102018000226
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
King penguins (Aptenodytes patagonicus Miller) are major consumers in the Southern Ocean. The colony at Ile aux Cochons, Iles Crozet, in the southern Indian Ocean was known in the 1980s as the largest king penguin colony and the second largest penguin colony in the world. However, there have not been any recent estimates of this colony. Aerial photographs taken from a helicopter, and satellite images were used to report on changes in the colony and population sizes over the past 50 years. The colony has declined by 88% over the past 35 years, from c. 500 000 pairs to 60 000 pairs. The possible causes of this decline were explored but no plausible explanation for such an unprecedented decrease in penguin populations was found. The study highlights the use of satellite imagery as a non-invasive technique for population monitoring, and stresses the need for further research on the causes of this alarming trend in this colony.
引用
收藏
页码:236 / 242
页数:7
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