Download or read book Porcupine Caribou Herd 1985 86 written by Doug Urquhart and published by . This book was released on 1989 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summer Range Relationships of the Porcupine Caribou Herd 1985 written by Donald Edmund Russell and published by . This book was released on 1986 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This study focuses on the summer range relations of the Porcupine caribou herd with particular attention to the behavioral responses of barren-ground caribou (Rangifer tarandus granti) as groups and individuals to blood-seeking and parasitic dipterans. Between mid-June and mid-August, caribou in the northern Yukon are periodically harassed by dipterans. The period of dipteran activity coincides with the critical time when caribou are restoring fat reserves depleted during winter, growing new hair and antlers, and lactating cows are producing milk for calves. Caribou experience physical irritation and blood loss to mosquitoes which emerge in late June and are active until early August. When mosquitoes are bothersome, caribou show signs of irritation by shaking their head, back, rump, or stomping their feet (Thompson, 1977). Adult warble flies (Hypoderma tarandu and nasal bot flies (Cephenamya trompe), collectively know as oestrids, do not inflict pain but their presence cause caribou to exhibit a number of "annoyance responses" (Espmark, 1967). The larvae of oestrids are obligate parasites of R. tarandus and have direct and indirect effects on their hosts. a. Direct costs: mosquitoes - loss of blood; Oestrids - increased load of endoparasites feeding on lymph, possible allergic response, suppression of immune response (Dietrich, 1981). b. Indirect costs: The indirect effect of avoiding dipterans may include reduced feeding, resting or rumination time, decrease efficiency of grazing ie. feeding less selectively or feeding in less most favorable habitat. The behavioral responses to dipterans, as well as selection of habitat with few dipterans, may have evolved in response to the direct and indirect energy cost associated with encountering blood-seeking and parasitic dipterans"--Leaf 1.

Download or read book Porcupine Caribou Herd written by Porcupine Caribou Management Board and published by . This book was released on 2006 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movement Patterns of the Porcupine Caribou Herd in Relation to Oil Development W 22 5 and W 22 6 written by Wayne Louis Regelin and published by . This book was released on 1986 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Resource Publication written by and published by . This book was released on 1987 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spring Migration Calving and Post calving Distribution and Initial Productivity of the Porcupine Caribou Herd 1986 written by Francis J. Mauer and published by . This book was released on 1988 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composition and Harvest of the Porcupine Caribou Herd written by and published by . This book was released on 1980 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Porcupine Caribou Herd Studies written by Robert E. LeResche and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution Movements and Juvenile Mortality of the Porcupine Caribou Herd in Northern Yukon June 1982 January 1986 written by Don E. Russell and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Myths Mysteries and Some Facts about the Porcupine Caribou Herd written by and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composition and Harvest of the Porcupine Caribou Herd Final Report written by Kenneth R. Whitten and published by . This book was released on 1980 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summer Range Relationships of the Porcupine Caribou Herd 1986 written by Donald Edmund Russell and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report briefly summarizes the results of the third summer field season, designed to provide baseline information for the potential development of Beaufort Sea oil and gas reserves. In the initial two field seasons, research focussed on documenting the distribution, movement patterns and habitat selection of the herd during insect season. As well, the role of insect harassment in influencing activity patterns and overt behaviour was documented in detail. In this third field season our objectives were to document the biophysical factors that influenced the patterns observed in the previous field seasons. Our objective was to construct a vegetation map for the study area using classification system that was particularly meaningful for caribou. In addition, we documented regional weather patterns, in an attempt to relate regional patterns to potential insect harassment levels. We also documented caribou movement and distribution in July and early August"--Leaf 2.

Download or read book Arctic National Wildlife Refuge ANWR written by United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Water and Power Resources and published by . This book was released on 1988 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composition and Harvest of the Porcupine Caribou Herd written by Kenneth R. Whitten and published by . This book was released on 1980 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Arctic National Wildlife Refuge ANWR Dept of Interior section 1002 report and recommendations to the Congress written by United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Water and Power Resources and published by . This book was released on 1988 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution and Movements of the Porcupine Caribou Herd in Northeastern Alaska 1972 written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Arctic National Wildlife Refuge Alaska written by United States. Congress. Senate. Committee on Energy and Natural Resources and published by . This book was released on 1987 with total page 1366 pages. Available in PDF, EPUB and Kindle. Book excerpt: