Breeding density and population of little auks (Alle alle) in a Northwest Greenland colony

被引:0
|
作者
Kaj Kampp
Knud Falk
Carsten Egevang Pedersen
机构
[1] Zoological Museum,
[2] Universitetsparken 15,undefined
[3] 2100 Copenhagen Ø,undefined
[4] Denmark e-mail: kkampp@zmuc.ku.dk Fax: +45-35-321010,undefined
[5] Ornis Consult,undefined
[6] Vesterbrogade 140A,undefined
[7] 1620 Copenhagen V,undefined
[8] Denmark,undefined
[9] Institute of Population Biology,undefined
[10] Universitetsparken 15,undefined
[11] 2100 Copenhagen Ø,undefined
[12] Denmark,undefined
来源
Polar Biology | 2000年 / 23卷
关键词
Density Estimate; World Population; Study Plot; Scree Slope; Unmarked Bird;
D O I
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中图分类号
学科分类号
摘要
The little auk population of the Thule district in Greenland is generally believed to be the largest anywhere and to comprise more than half of the world population, although published numbers have largely been conjectural. In 1996/1997 we estimated breeding density of little auks at Hakluyt Island in this district by colour-marking a number of birds in three study plots and subsequently counting marked and unmarked birds present in the plots. The density estimate considered most representative of the colony was 1.8 birds/m2 or 0.73 pairs/m2 (±7%). From surveys of the inhabitated area of the scree slopes, this density implies a total little auk population for the island of 130,000 pairs. An extrapolation to the entire Thule district suggests a population in the area of at least 15 million pairs, which is in general agreement with previously published assumptions.
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页码:517 / 521
页数:4
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