Arid
DOI10.1007/BF00341324
PREDATION HAZARD AND SEED REMOVAL BY SMALL MAMMALS - MICROHABITAT VERSUS PATCH SCALE EFFECTS
BOWERS, MA; DOOLEY, JL
来源期刊OECOLOGIA
ISSN0029-8549
EISSN1432-1939
出版年1993
卷号94期号:2页码:247-254
英文摘要

Predator avoidance may involve response strategies of prey species that are time and space specific. Many studies have shown that foraging individuals avoid predators by altering microhabitat usage; alternatively, sites may be selected according to larger-scale features of the habitat mosaic. We measured seed removal by two small mammal species (Peromyscus leucopus, and Microtus pennsylvanicus) at 474 stations over an experimentally created landscape of 12 patches. and under conditions of relatively high (full moon) and low (new moon) predatory hazard. Our objective was to determine whether predator avoidance involved the selection of small-, medium-, or large-scale features of the landscape (i.e., at the scale of microhabitats, habitats, or habitat patches). We found rates of seed removal to vary more with features of whole patches than according to variation in structural microhabitats within patches. Specific responses included: under-utilization of patch edge habitats during full moon periods, and microhabitat effects that were only significant when considered in conjunction with larger-scale features of the landscape. Individuals residing on large patches altered use of microhabitats/habitats to a greater extent than those on smaller patches. Studies just focusing on patterns of microhabitat use will miss responses at the larger scales, and may underestimate the importance of predation to animal foraging behavior.


英文关键词FORAGING MICROHABITAT HABITAT PATCHES PREDATION RISK SMALL MAMMALS
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:A1993LE06100014
WOS关键词DESERT RODENT COMMUNITIES ; FORAGING MINNOWS ; HABITAT GEOMETRY ; KANGAROO RAT ; RISK ; MOONLIGHT ; SELECTION ; CONSERVATION ; POPULATIONS ; COEXISTENCE
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/129263
作者单位(1)UNIV VIRGINIA, DEPT ENVIRONM SCI, CHARLOTTESVILLE, VA 22903 USA;(2)UNIV VIRGINIA, BLANDY EXPTL FARM, CHARLOTTESVILLE, VA 22903 USA
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BOWERS, MA,DOOLEY, JL. PREDATION HAZARD AND SEED REMOVAL BY SMALL MAMMALS - MICROHABITAT VERSUS PATCH SCALE EFFECTS[J],1993,94(2):247-254.
APA BOWERS, MA,&DOOLEY, JL.(1993).PREDATION HAZARD AND SEED REMOVAL BY SMALL MAMMALS - MICROHABITAT VERSUS PATCH SCALE EFFECTS.OECOLOGIA,94(2),247-254.
MLA BOWERS, MA,et al."PREDATION HAZARD AND SEED REMOVAL BY SMALL MAMMALS - MICROHABITAT VERSUS PATCH SCALE EFFECTS".OECOLOGIA 94.2(1993):247-254.
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