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USE OF MUTUALLY EXCLUSIVE FORAGING AREAS BY ADJACENT COLONIES OF BLUE-EYED SHAGS (PHALACROCORAX-ATRICEPS) AT SOUTH GEORGIA
被引：44
作者：
WANLESS, S
HARRIS, MP
机构：
来源：
COLONIAL WATERBIRDS
|
1993年
/
16卷
/
02期
关键词：
BLUE-EYED SHAG;
DIET;
DIVE DURATION;
FORAGING AREA;
HINTERLAND MODEL;
MAXIMUM DIVE DEPTH;
PHALACROCORAX-ATRICEPS;
SOUTH GEORGIA;
ANTARCTICA;
D O I：
10.2307/1521435
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ;
0713 ;
摘要：
The areas used for feeding by Blue-eyed Shags (Phalacrocorax atriceps) in two colonies 2.5 km apart were determined using radio-telemetry. Foraging range was extremely limited with most birds feeding within 1 km of their colony. There was no overlap in feeding areas between the two colonies despite their proximity. Significant inter-colony differences in dive duration, maximum dive depth, and diet were found but timing of breeding, chick growth rate, and reproductive output were similar. These results provide support for Cairns' (1989) hinterland model for the regulation of seabird colony size.
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页码：176 / 182
页数：7
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