Download or read book Phenetic Variation in the Snowshoe Hare Lepus Americanus written by David W. Nagorsen and published by . This book was released on 1983 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Morphometric Study of Geographic Variation in the Snowshoe Hare Lepus Americanus written by David W. Nagorsen and published by . This book was released on 1985 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Seasonal Change of Color in the Varying Hare Lepus Americanus Erxl written by Joel Asaph Allen and published by . This book was released on 1894 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluctuations in the Numbers of the Varying Hare Lepus Americanus written by Duncan Alexander Mac Lulich and published by . This book was released on 1937 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The varying hare has become an almost classic example of an animal that undergoes periodic fluctuations in numbers. Since the case of the hare is such common knowledge, and since hares comprise one of the very large and important populations in the economy of nature, it was considered important to make an investigation of it.
Download or read book Survival and Activity Patterns of Snowshoe Hares Lepus Americanus in Interior Alaska written by Dashiell S. Feierabend and published by . This book was released on 2013 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snowshoe hare (Lepus americanus) survival depends on the interaction of habitat characteristics with numerous biological and environmental variables. In boreal regions where considerable habitat heterogeneity exists, hares balance food availability with predation risk by moving among habitats seasonally, but it is largely unknown how often they move at shorter time scales. I investigated the seasonal effects of habitat, weather, and individual hare characteristics on survival and movement in two common but fundamentally different boreal habitats. Survival was highest in summer, for hares with higher body condition, and in black spruce rather than early successional forest. Hares moved among core use areas in different habitats twice per day on average, using more open areas at night when they were presumably feeding on preferred browse. Movement rates were lowest in mid-afternoon when hares appeared to be resting under dense cover. Behavior of individuals varied greatly with some hares repeatedly moving up to 1 km between defined patches in less than 5 hours and others remaining roughly within a 1 ha area. These findings illustrate the complexity of snowshoe hare ecology in an area where habitat variation promotes daily movement of hares among radically different habitats over a few hundred meters.
Download or read book Snowshoe Hare written by I. B. Keith and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The snowshoe hare (Lepus americanus), one of our commonest forest mammals, is found only in North America. This document presents a description of the species and provides information on habitat and habits, range, feeding, breeding, and conservation measures.
Download or read book Influence of Precommercial Thinning on Snowshoe Hares written by and published by . This book was released on 2005 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cyclical Variation in Predation Risk written by Laura Katherine McCaw and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snowshoe hare (Lepus americanus) populations cycle over 10-year periods, primarily driven by predation. High predation risk triggers the decline phase of the cycle through both direct mortality and non-consumptive stress effects that curtail reproduction and survival. The decline phase is followed by an enigma, the prolonged low phase, where the population fails to recover. This suggests maternal stress effects may act to program offspring across generations in this population. Through a natural monitoring study spanning the hare cycle, we investigated the impact of changing predation risk and maternal stress on offspring. Offspring in the decline phase showed a suite of changes to their behaviour, condition, physiology and gene expression compared to offspring from the increase and peak phases, suggesting maternal programming is occurring. This study was novel in documenting changes in gene expression of hippocampal glucocorticoid receptors in response to a natural increase in predation risk in a wild mammal.
Download or read book Hopping Ahead of Climate Change written by Sneed B. Collard and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists seek to answer the critical question: Can snowshoe hares and other animals with seasonal coat color changes adapt to shorter winters caused by climate change?
Download or read book Ecology Habitat Use and Winter Thermal Dynamics of Snowshoe Hares in Pennsylvania written by Laura Gigliotti and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Differences in biotic and abiotic characteristics can lead to geographic variation in the ecology of species and populations. Investigating intraspecific variation over large geographic extents can provide insights into the ecological drivers of population dynamics, which is especially important for predicting how future climatic conditions will affect ecological processes. The snowshoe hare (Lepus americanus) is an excellent species to investigate geographic variation in ecological dynamics because it has a geographic range that encompasses a wide range of climates and habitat types. Although the population dynamics of snowshoe hares in the northern portion of their range are well-studied, information on southern populations is limited. I investigated the ecology, habitat use, and winter thermal dynamics of snowshoe hares in Pennsylvania and compared these data to previous research on other hare populations. From January 2014 -- June 2015 I trapped and monitored snowshoe hares to estimate body condition, survival rates, home range size, and home range overlap. I found that hares in Pennsylvania had greater body mass in relation to their structural size, higher annual survival, and larger home ranges than populations from higher latitudes. Home range overlap occurred frequently and I did not find that hares temporally partitioned their home ranges to minimize interaction with nearby hares. Also I trapped three snowshoe hares that exhibited uncharacteristic brown winter coat coloration, indicating potential differences in the winter molt patterns or color morphs. Using locations collected from GPS collars I examined snowshoe hare seasonal habitat use at the stand-level and at fine-scale microhabitats. I determined that during both summer and winter hares preferred areas of mature scrub oak or conifers and avoided open habitats. At the population level, hares preferred areas with dense understory vegetation and high canopy coverage, although I found substantial individual variability in habitat preferences. My research highlights the importance of incorporating multiple scales of analysis into habitat use studies, as well as accounting for individual variation in habitat preferences. Finally, I investigated geographic differences in snowshoe hares' responses to winter temperatures by comparing winter pelage characteristics and heat production between hares in Pennsylvania and the Yukon, as well as investigated the influence of temperature on resting spot selection and movement rates. I found that hares from Pennsylvania had shorter and less dense winter coats than hares from the Yukon and that the Pennsylvania population had less visible white in their winter coats. Hares in the Pennsylvania population also produced less heat than the Yukon population, indicating a lower metabolic rate. Snowshoe hares did not select for resting spots that offered them thermal advantages, but selected locations providing visual obstruction from predators. Movement rates were associated with ambient temperature, with the lowest hourly movements occurs at the extreme high (>4 oC) and low (
Download or read book Habitat Utilization of Snowshoe Hares Lepus Americanus in Interior Alaska written by Jerry Wolff and published by . This book was released on 1977 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Snowshoe Hare Lepus Americanus Habitat in Western Massachusetts written by Kathryn Ann Converse and published by . This book was released on 1981 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1985 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pelage Changes in the Snowshoe Hare Lepus Americanus Struthopus Bangs written by Joye Harold Severaid and published by . This book was released on 1945 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Demography and Ecology of a Declining Snowshoe Hare Population written by Lloyd Burrows Keith and published by . This book was released on 1984 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a study of snowshoe hare (Lepus americanus) populations at Rochester, Alberta, from late November 1981 to mid-April 1982, the second winter of a cyclic decline. Purpose to test hypothesis that malnutrition, predation, and low temperatures were interacting to depress overwinter survival.
Download or read book Snowshoe Hares Lepus Americanus Alter Feeding Behavior in Response to Coyote Canis Latrans and Moose Alces Alces Cues at Diverse Vegetation Densites written by Zachary K. Lankist and published by . This book was released on 2019 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Snowshoe Hare written by Sherry Wise and published by . This book was released on 1986 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
