SPOTTED OWL HOME RANGE AND HABITAT USE IN SOUTHERN OREGON COAST RANGES

被引:99
作者
CAREY, AB [1 ]
REID, JA [1 ]
HORTON, SP [1 ]
机构
[1] US FOREST SERV,BUR LAND MANAGEMENT,PACIFIC NW RES STN,ROSEBURG,OR 97470
关键词
D O I
10.2307/3808894
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Nine adult Strix occidentalis were radiotracked for 6-12 months. Owls selected home ranges that emphasized old growth within the landscape. Minimum convex polygon home ranges of 4 pairs were 1153-3945 ha and contained 726-1062 ha of old growth. The percentages of the home ranges in old growth were 25-73%. Home-range size expanded significantly with decreasing proportions of old growth. Amount of old growth in the pair home ranges was less variable than was home-range size. Old growth was selected by the owls for foraging and roosting; clearcuts and other nonforested areas were not used. Early to middle stages of forest development were used either less than or in proportion to their availability within the home ranges, even where old growth was scarce. -Authors
引用
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页码:11 / 17
页数:7
相关论文
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