Environmental influences on spatial and temporal patterns of body-size variation in California ground squirrels (Spermophilus beecheyi)
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چکیده
Change in body size across geographical and temporal scales is a common way in which species, particularly mammals, respond to environmental variation (Dayan et al., 1991; Hadly, 1997; Ashton et al., 2000; Meiri & Dayan, 2003; Smith & Betancourt, 2006). Numerous studies have identified factors that influence geographical variation in body size within species, mainly focusing on climatic variables such as temperature and precipitation that may influence the body size of individuals through their effect on physiology (Rosenzweig, 1968; Brown & Lee, 1969; James, 1970; Klein & Scott, 1989; Olcott & Barry, 2000; Yom-Tov, 2001; Yom-Tov & Geffen, 2006). However, few generalizations have emerged, in part because the body size of individuals and populations represents the integration of diverse processes, such as life history Department of Biological Sciences, Gilbert Hall, Stanford University, Stanford, CA, USA,New York State Museum, Cultural Education Center, Albany, NY, USA
منابع مشابه
Quantitative shedding of two genotypes of Cryptosporidium parvum in California ground squirrels (Spermophilus beecheyi).
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تاریخ انتشار 2007