RELATIONSHIPS BETWEEN VEGETATIONAL STRUCTURE AND PREDATION OF ARTIFICIAL SAGE GROUSE NESTS

被引:70
作者
DELONG, AK [1 ]
CRAWFORD, JA [1 ]
DELONG, DC [1 ]
机构
[1] OREGON STATE UNIV, DEPT FISHERIES & WILDLIFE, CORVALLIS, OR 97331 USA
关键词
ARTIFICIAL NEST; CENTROCERCUS UROPHASIANUS; HABITAT; NESTING; OREGON; PREDATION; SAGE GROUSE;
D O I
10.2307/3809119
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Because of high nest predation and long-term declines in sage grouse (Centrocercus urophasianus) productivity in Oregon, we assessed the effects of vegetational cover and height on predation of artificial sage grouse nests (n = 330). Artificial nest fate was positively associated with tall grass cover and medium-height shrub cover collectively (P = 0.01). No other vegetation, predator, temporal, or spatial variables explained any additional variation in the probability of predation. This study supports the hypothesis that greater amounts of tall grass and medium-height shrub cover at nest sites lower risk of nest predation for sage grouse. Management practices that increase cover and height of native grasses in sagebrush communities with medium-height shrubs are recommended to enhance sage grouse productivity.
引用
收藏
页码:88 / 92
页数:5
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