Download or read book Winter Range Ecology of Caribou rangifer Tarandus written by Don Russell and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Winter Ecology of Cape Churchill Caribou Rangifer Tarandus Ssp written by Mitch William Campbell and published by . This book was released on 1995 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aspects of snow conditions, plant community use, and feeding habits were examined for caribou occupying the Cape Churchill Wildlife Management Area. Studies were carried out over each of the 1989-90 and 1990-91 snow seasons. Attempts were made to interrelate feeding habits and plant community use with changing snow conditions based on 7 snow stations set up within four taiga and three tundra plant communities. Fundamental differences between taiga and tundra snow conditions are also discussed. Plant communities were described based on quadrat and point quarter methods, prior to snowfall, within each of four taiga and three tundra plant community snow stations. Snow conditions at snow stations and caribou feeding sites were quantified through the excavation and examination of snow profiles... Taiga and tundra snow conditions are fundamentally different. This was primarily due to the effects of wind on the more exposed tundra and the relative lack of wind in the taiga... Cape Churchill caribou displayed a wide use of plant communities that varied both throughout the snow seasons and between them. Snow conditions within taiga plant communities differed both between themselves over both snow seasons, and differed between the two snow seasons. Tundra plant communities also displayed variability over the same periods though not as severe as taiga sites. Cape Churchill caribou did however remain in feeding sites beyond threshold levels if suitable alternate plant communities were not available. These data imply that conventional wildlife management techniques used to determine caribou range tend dramatically to underestimate actual requirements. Through the long term field monitoring of representative plant community snow conditions and winter habitat use by caribou, a more realistic estimate of caribou range can be achieved.
Download or read book The Winter Ecology of Cape Churchill Caribou Rangifer Tarandus Ssp written by Mitch Campbell and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aspects of snow conditions, plant community use, and feeding habits were examined for caribou occupying the Cape Churchill Wildlife Management Area. Studies were carried out over each of the 1989-90 and 1990-91 snow seasons. Attempts were made to interrelate feeding habits and plant community use with changing snow conditions based on 7 snow stations set up within four taiga and three tundra plant communities. Fundamental differences between taiga and tundra snow conditions are also discussed. Plant communities were described based on quadrat and point quarter methods, prior to snowfall, within each of four taiga and three tundra plant community snow stations. Snow conditions at snow stations and caribou feeding sites were quantified through the excavation and examination of snow profiles ... Taiga and tundra snow conditions are fundamentally different. This was primarily due to the effects of wind on the more exposed tundra and the relative lack of wind in the taiga ... Cape Churchill caribou displayed a wide use of plant communities that varied both throughout the snow seasons and between them. Snow conditions within taiga plant communities differed both between themselves over both snow seasons, and differed between the two snow seasons. Tundra plant communities also displayed variability over the same periods though not as severe as taiga sites. Cape Churchill caribou did however remain in feeding sites beyond threshold levels if suitable alternate plant communities were not available. These data imply that conventional wildlife management techniques used to determine caribou range tend dramatically to underestimate actual requirements. Through the long term field monitoring of representative plant community snow conditions and winter habitat use by caribou, a more realistic estimate of caribou range can be achieved.
Download or read book Fire caribou Relationships written by D. C. Thomas and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report consists of a series of conclusions and recommendations concerning winter ecology of caribou and effects of fire on winter range of the Beverly herd of barren-ground caribou (Rangifer tarandus groenlandicus)"--Summary.
Download or read book Resource Selection by Animals written by B.F. Manly and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have written this book as a guide to the design and analysis of field studies of resource selection, concentrating primarily on statistical aspects of the comparison of the use and availability of resources of different types. Our intended audience is field ecologists in general and, in particular, wildlife and fisheries biologists who are attempting to measure the extent to which real animal populations are selective in their choice of food and habitat. As such, we have made no attempt to address those aspects of theoretical ecology that are concerned with how animals might choose their resources if they acted in an optimal manner. The book is based on the concept of a resource selection function (RSF), where this is a function of characteristics measured on resourceunits such that its value for a unit is proportional to the probability of that unit being used. We argue that this concept leads to a unified theory for the analysis and interpretation of data on resource selection and can replace many ad hoc statistical methods that have been used in the past.
Download or read book Winter Ecology of Woodland Caribou written by R. R. P. Stardom and published by . This book was released on 1977 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Winter Ecology of Cape Churchill Caribou Rangifer Tarandus Ssp microform written by Mitch William Campbell and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1999 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Range Ecology of Mountain Caribou Rangifer Tarandus Caribou in Jasper National Park 1971 1974 written by John G. Stelfox and published by . This book was released on 1978 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of detailed range studies on subalpine, alpine-tundra, and river delta caribou ranges and examines both habitat and plant species preferences of both caribou and elk. Includes checklists of plants found on caribou ranges.
Download or read book Winter Ecology of Woodland Caribou Rangifer Tarandus Caribou and Some Aspects of the Winter Ecology of Moose Alces Alces Andersoni and Whitetail Deer Odocoileus Virginianus Dacotensis Mammalia written by R. R. P. Stardom and published by . This book was released on 1977 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three major woodland caribou habitats are: open larch or black spruce bogs (the major source of arboreal lichens), intermediate to mature jack pine rock ridge forests (the major source of ground lichens) and rock ridge-shored lakes (major travel, loafing and feeding areas at the beginning of the spring thaw). During early winter, the caribou feed intensively on arboreal lichens in open bogs under windless, thin snow cover conditions but, if the reverse conditions exist, intensive feeding shifts to ground lichens found on ridge areas. During the remainder of the snow period, major feeding is on intermediate to mature jack pine ridges where the snow cover is softer due to the lack of wind crusts and thinner due to qali formation. Major utilization of lakes occurs only during periods of thick snow cover when the nival conditions on lakes are more conducive to loafing and travel than adjacent forest types. The woodland caribou threshold of sensitivity to nival conditions is approximately 65 cm. The hardness threshold is approximately 80g/cm2 for jack pine ridge areas, 400 g/cm2 for open bog areas and 700 g/cm2 on lakes. The density threshold is approximately 0.20 to 0.36 for jack pine ridge areas, 0.18 to 0.24 for bog areas and 0.25 to O.33 for lakes. These thresholds vary with the thickness of the snow cover in the three habitats and height of hard, dense layers above the substrate. A minimum of 183 woodland caribou inhabited the extensive study area during the study period. This population was comprised of five groups that ranged in size from 8 to 55 individuals. No overlap in their winter ranges was evident. In a winter of thin snow cover, the bands making up the resident groups are smaller and feed more extensively over their winter range. Conversely, in a winter of thick snow cover, there is a greater aggregation of individuals into larger bands which feed intensively in small areas of their winter range. Association between whitetail deer and woodland caribou is almost non-existent. Association between whitetail deer and moose is high only during periods of thin snow cover when the two species inhabit the same habitat type. Association between moose and woodland caribou is less than what would be expected by chance and this lack of association is primarily due to ecological segregation. Moose appear to be restricted little in this portion of their winter range though they are generally observed on high ground or ridge areas during the onset of the winter period. When the bogs and swamps are frozen, they again inhabit a melange of habitat types and during late winter, are frequently found in areas which harbored deer in the early winter months. In the East Lake Winnipeg snow regime, average snow cover thicknesses have little effect on moose activity; any shift in activity normally does not occur until large areas exhibit snow cover thicknesses in excess of 70 cm. Whitetail deer are influenced most by the nival environment and, while inhabiting mixed deciduous-coniferous forests during the major portion of the winter, they are restricted to areas offering thin, soft snow conditions during January and February. Of the three ungulate species in the study area, whitetail deer are first to exhibit a response to the nival conditions and react to snow cover thicknesses in excess of 25 cm by moving from normal summer range to areas with more favorable snow conditions.
Download or read book Range Ecology of the Porcupine Caribou Herd in Canada written by Don E. Russell and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a study (1979-1987) on the range ecology of the Porcupine Caribou Herd of Grant's caribou (Rangifer tarandus-granti)that migrates annually from summer range on the arctic coastal plain of Alaska and Yukon to winter in the forested valleys and plains of north-central Yukon and western Alaska. The study was undertaken by the Yukon Dept. of Renewable Resources and the Canadian Wildlife Service because of concern about proposed developments within the range of the caribou.
Download or read book Reindeer and Caribou written by Morten Tryland and published by CRC Press. This book was released on 2018-11-09 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive presentation of health and diseases in reindeer and caribou, or just Rangifer, a key Circumarctic species with broad social and ecological value. It is an essential reference for anyone interested in the biology and health of wild or semi-domesticated reindeer and caribou, and is more broadly relevant for those with interests in other species of free-ranging and captive cervids. Beginning with a general introduction to Rangifer as a species, it then focuses on Rangifer "health" as a concept and describes the determinants of health at an individual and population level. Chapters cover a range of topics from nutrition and feeding to stress, non-infectious and infectious diseases, meat hygiene, capture and restraint, diagnosis and treatment of health issues, and finally, potential impacts of climate change on health of Rangifer. Reindeer and Caribou: Health and Disease compiles extensive research and experience-based information on issues ranging from drug doses for chemical immobilization, blood chemistry values, and raising an orphaned calf. In addition, it contains hundreds of high quality colour illustrations that contribute to its value as a diagnostic resource for recognizing various parasites, pathogens and signs of disease, both in live and dead animals. Each chapter is followed by a comprehensive list of references and a list of contact information for all the contributors, identifying world experts in the different areas of health for this circumpolar and fascinating species. This book is compulsory reading and an indispensable resource for anyone dealing with health in reindeer and caribou, including veterinarians, wildlife biologists and managers, reindeer herders/game ranchers, zoological husbandry personnel, and students with wildlife health.
Download or read book Winter Range Studies of the Western Arctic Caribou Herd Northwest Alaska written by Kyle Joly and published by . This book was released on 2011 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is likely to bring a myriad of interrelated changes to the Arctic. One change is warmer and drier conditions that could increase the prevalence of wildfire in northwest Alaska. Wildfires destroy terricolous lichens that Western Arctic Herd caribou (Rangifer tarandus) rely on during winter; taking decades to recover. My goals were to assess the recent (1950-2007) fire regime within the herd's range, identify characteristics of habitat selected by overwintering caribou, and determine the potential impacts of climate change on the fire regime and caribou winter range. I used a combination of existing data and information collected at vegetation plots to conduct these analyses. I found that wildfires in the tundra were relatively common from 1950-2007, covering approximately 10% of northwest Alaska. Tundra was > 4.5 times more likely to re-burn than boreal forest. This novel, yet intuitive finding could have serious implications if fire starts to become more common in the Arctic. I found that the average annual area burned more than doubled in years where mean August temperatures exceeded 11.7° C (53° F). Caribou use tundra and forested during winter but avoided recently (
Download or read book Plasticity in Selection Strategies of Woodland Caribou Rangifer Tarandus Caribou During Winter and Calving written by David D. Gustine and published by . This book was released on 2005 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Management in the Yukon Winter Range of the Little Rancheria Caribou Herd written by Jan Adamczewski and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Significance of Snow and Arboreal Lichen in the Winter Ecology of Mountain Caribou Rangifer Tarandus Caribou in the North Thompson Watershed of British Columbia written by Theodore Danial Antifeau and published by . This book was released on 1987 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Close Encounters of the Burned Kind written by Kelsey L.M. Russell and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest fire is the primary natural disturbance process influencing the distribution and abundance of terrestrial lichens across ranges of woodland caribou (Rangifer tarandus caribou), including the Klaza Caribou Herd in west-central Yukon. I used stand and understory data to understand variation in the abundance of lichens in burns of various ages. Focusing on the distribution of individual caribou, I used a dataset of GPS collar locations to examine resource selection on the winter range and within burns. Results suggested that burns provided suboptimal habitat for the KCH until 50 years post-fire; however, analyses focused on the use of burned habitat indicated that they regularly encountered burns and opportunistically used remnant lichen within the burn perimeter. The relationship between caribou and burned landscapes is complex and non-linear indicating that wildlife managers should look beyond burn age to account for the effects of fire on the availability and quality of caribou habitat.
Download or read book Population Ecology of the Caribou Rangifer Tarandus Granti in Alaska written by Ronald O. Skoog and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
