Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Patrick T. Gregory"'
Autor:
Dan Farr, Patrick T. Gregory
Publikováno v:
The Canadian Field-Naturalist. 132:36-42
Life-history traits of organisms are influenced by both genetic and environmental factors. We used counts of offspring in captive-born litters to determine how geographic location, year-to-year variation, and body size of mother affected litter size
Publikováno v:
The Canadian Field-Naturalist. 131:37-45
Understanding habitat requirements of species is fundamental for their conservation and urban parks can provide key habitat for species in otherwise disturbed settings. Northwestern Gartersnakes (Thamnophis ordinoides) are common in parks in Saanich,
Autor:
Patrick T. Gregory
Publikováno v:
Journal of Herpetology. 50:183-195
Numerous behaviors of natricine snakes are plausibly interpreted as antipredator mechanisms that are useful at different stages of an encounter with a predator. Several of these behaviors have been described in detail, often in the laboratory, but we
Autor:
Patrick T. Gregory, Krysia N. Tuttle
Publikováno v:
Herpetologica. 72:64-72
An animal’s decision to stay in a protective refuge or venture from it will depend on the exigencies of other necessary functions (e.g., feeding, breeding, thermoregulation), which often will interact themselves. In this study, we determined broad
Publikováno v:
Journal of Herpetology. 49:371-376
Contrasting movements and habitat use may occur among snakes, and these differences may reflect important local responses to habitat variation and/or signify that broad, unimodal approaches to species conservation are too coarse. Fine-scale differenc
Autor:
Krysia N. Tuttle, Patrick T. Gregory
Publikováno v:
Copeia. 2014:130-135
Do high-latitude environments constrain life histories of ectotherms? One expectation is that shorter and cooler active seasons at high latitudes limit opportunities for maintenance of optimum body temperature and restrict time for foraging and there
Autor:
Patrick T. Gregory, Leigh Anne Isaac
Publikováno v:
Biological Journal of the Linnean Society. 108:756-772
Colours influence numerous aspects of an animal's ecology. One possibility is that colour helps make an animal cryptic against the background on which it is resting. We test this hypothesis for two different, geographically separated colour forms (da
Autor:
Patrick T. Gregory, Virgil C. Hawkes
Publikováno v:
Forest Ecology and Management. 274:67-80
In certain regions of Canada and the United States, amphibians have been shown to be sensitive to forest management and the short-term adverse effects of timber harvesting on terrestrial amphibians have been well documented in the literature. However
Autor:
Patrick T. Gregory
Publikováno v:
Écoscience. 18:1-8
An animal's relative body mass (i.e., mass adjusted for length or some other size dimension) is a potential indicator of its body condition, which in turn can influence demographic traits. In this study, I revisited data collected in 1969–1970 on g
Publikováno v:
Animal Conservation. 13:43-52
Widely distributed species often vary geographically in their ecology. Thus, results of studies done in one part of their range cannot necessarily be extrapolated readily to populations elsewhere. This problem is particularly important for threatened