Written in English
|The Physical Object|
|Number of Pages||177|
Latitudinal variation in snowshoe hare (Lepus americanus) body mass: a test of Bergmann’s rule Laura C. Gigliotti, Nathan D. Berg, Rudy Boonstra, Shawn M. Cleveland, Duane R. Diefenbach. We investigated whether snowshoe hares (Lepus americanus Erxleben, ) follow Bergmann’s rule by investigating differences in body mass using data from six published studies and from data of individual hares captured from 10 populations across North America covering 26° of north latitude. We also explored alternative hypotheses related Cited by: 1. Full Text; PDF ( K) PDF-Plus ( K) Citing articles; Geographic variation in winter adaptations of snowshoe hares (Lepus americanus)L.C. Gigliotti,* a D.R. Diefenbach, b M.J. Sheriff c a Pennsylvania Cooperative Fish and Wildlife Research Unit, The Pennsylvania State University, University Park, PA , USA.. b U.S. Geological Survey, Pennsylvania Cooperative Fish and Wildlife Research Cited by: 9. We found significant geographic variation in bobcat body size, with about 44% of the variation in males and 47% of the variation in females accounted for by comparison among the localities. We also found that variation in body size was associated with Bergmann's rule, as indicated by significant multiple regression of body size of males (R 2.
We compared winter pelage characteristics and heat production of snowshoe hares (Lepus americanus Erxleben, ) on the southern edge of their range, in Pennsylvania (USA), to a northern population, in the Yukon (Canada), to investigate how hares might respond to changing environmental conditions. We also investigated how hares in Pennsylvania. In a highdensity snowshoe hare (Lepus americanus) population in the Kluane boreal forest region, Krebs et al. ( Krebs et al. (, used m 2 ( × cm) rectangular pellet plots. The cyclic changes in abundance of the snowshoe hare (Lepus americanus Erxleben, ) and the Canadian lynx (Lynx canadensis Kerr, ) are well known (1–4).These 9- to year fluctuations are commonly discussed in ecology texts (e.g., refs. 5 and 6) as examples of coupled predator–prey cycles (7–13).. Even though the biodiversity of the boreal forest is low (), it is still a too. We calibrated snowshoe hare (Lepus americanus) numbers with pellet counts in Minnesota, USA, to understand the relationship between hare numbers and pellets in the central portion of the hare range.
The snowshoe hare (Lepus americanus), a key prey species of the boreal forest of North America (Krebs, Boonstra, Boutin, & Sinclair, ), exhibits seasonal colour moults in the majority of its. Snowshoe Hare. Lepus americanus. Status: Not Listed. Classification: Mammal. Description. Snowshoe hares have an interesting adaptation that helps protect them against predators. Depending on the season, their fur can be a different color. During the winter, snowshoe hares are white, which helps them blend in with the snow. When the seasons. 1. Introduction. The cyclic dynamics of snowshoe hare (Lepus americanus) populations throughout much of North America's boreal forest is probably one of the better documented among mammals species, although many populations of snowshoe hare fluctuate irregularly or are stationary (see Keith, and Schaffer, for references).The snowshoe hare is usually considered to be a . The rise and fall in numbers of snowshoe hares and Canada lynx was observed more than two hundred years ago by trappers working for Hudson’s Bay Company, which was once heavily involved in the fur the early 20th century, records of the number of lynx and hare pelts traded by Hudson’s Bay were analyzed by biologist Charles Gordon Hewitt.