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Factors Influencing The Distribution Of Bathurst Barren Ground Caribou Rangifer Tarandus Groenlandicus During Winter
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Book Synopsis Factors Influencing the Distribution of Bathurst Barren-ground Caribou (Rangifer Tarandus Groenlandicus) During Winter by : Tara A. Barrier
Download or read book Factors Influencing the Distribution of Bathurst Barren-ground Caribou (Rangifer Tarandus Groenlandicus) During Winter written by Tara A. Barrier and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the circumpolar north, many herds of Rangifer have decreased in abundance. In the Canadian central Arctic, the Bathurst herd of barren-ground caribou (Rangifer tarandus groenlandicus) declined from 472,000 ± 72,900 (± 95% confidence interval) caribou in 1986 to 31,900 ± 10,900 caribou in 2009 ...A reduction in winter forage due to forest fires has been suggested as a factor contributing to the decline. I employed a multi-scale study design to identify the influence of vegetation, fire history, snow cover, and predation risk on the occupancy of winter habitats by Bathurst caribou. Between 2008 and 2009, I collected forest stand and understory data at habitats used by caribou, as well as paired control sites. At a larger spatial scale, I used animal location data recorded from 1996 - 2009 to characterize the spatial and temporal distribution of Bathurst caribou on the winter range. At the scale of the feeding patch, caribou foraged in habitats with a high-percentage ground cover, high biomass of lichen, and few or small trees. Similarly, the consensus among the models of habitat selection was that collared caribou avoided areas of the winter range with a high density of burns and favoured older patches of forest characterized by a high percentage of ground cover of lichen and herbaceous forage and a close proximity to lakes and rivers. However, there was considerable use of habitats adjacent to the burn boundary, and some caribou occupied early-seral habitats significantly more than expected. Although the abundance of fruticose (having branched, shrubby thalli) lichens was relatively high (2464 kg/ha) in areas burned within the last 43 - 264 years, my results suggest that an increased incidence and severity of forest fires due to climatic warming could cause a temporary decrease in the habitat available to the Bathurst caribou herd during winter. In the event that reduced lichen availability becomes a limiting or regulating factor for caribou, fire suppression may be necessary to mitigate.
Book Synopsis Factors Influencing Local Movements and Behavior of Barren-ground Caribou (Rangifer Tarandus Granti) by : James A. Curatolo
Download or read book Factors Influencing Local Movements and Behavior of Barren-ground Caribou (Rangifer Tarandus Granti) written by James A. Curatolo and published by . This book was released on 1975 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Influencing Local Movements and Behaviour of Barren-Ground Caribou (Rangifer Tarandus Granti) by : J. A. Curatolo
Download or read book Factors Influencing Local Movements and Behaviour of Barren-Ground Caribou (Rangifer Tarandus Granti) written by J. A. Curatolo and published by . This book was released on 1975 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interrelationships Between Weather, Parasitic Insects, and Barren-ground Caribou (Rangifer Tarandus Groenlandicus) Behaviour in Northwest Territories and Nunavut by : Leslie A. Witter
Download or read book Interrelationships Between Weather, Parasitic Insects, and Barren-ground Caribou (Rangifer Tarandus Groenlandicus) Behaviour in Northwest Territories and Nunavut written by Leslie A. Witter and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bathurst barren-ground caribou (Rangifer tarandus groenlandicus) herd decreased by 90% from 1986-2009. Increased intensity of insect harassment due to climatic warming is hypothesized as a factor contributing to the decline. I monitored weather, trapped insects, and recorded caribou behavior during 2007-2009. Oestrid fly (Oestridae) presence, and mosquito (Culicidae) and black fly (Simuliidae) activity/abundance were best explained by temperature, wind speed, light intensity, barometric pressure, relative humidity, vegetation, topography, and location. Time of day and growing degree days also affected mosquito and black fly levels. Conditions favouring mosquito activity declined, while those favouring black and oestrid fly activity increased since the mid 1980s. Mosquitoes had relatively little effect on caribou behavior. Insect avoidance increased when oestrids were present or black flies were active at moderate-high levels. Understanding differential effects of macroparasites on Rangifer behavior is necessary to predict herd dynamics in the context of a changing climate across northern Canada. --P.ii.
Book Synopsis Reindeer and Caribou by : Morten Tryland
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.
Book Synopsis Precalving Distribution and Abundance of Barren-ground Caribou on the Northeastern Mainland of the Northwest Territories by : Douglas C. Heard
Download or read book Precalving Distribution and Abundance of Barren-ground Caribou on the Northeastern Mainland of the Northwest Territories written by Douglas C. Heard and published by . This book was released on 1987 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a study conducted to determine numbers and precalving distribution of barren-ground caribou (Rangifer tarandus groenlandicus) in northeastern Keewatin District, N.W.T. Three regions were found to coincide with calving grounds of previously defined herds, the Melville, Wager and Lorillard.
Book Synopsis Study Design to Measure Distributional Changes of Barren-ground Caribou Near a Winter Road by : Anne Gunn (Wildlife manager)
Download or read book Study Design to Measure Distributional Changes of Barren-ground Caribou Near a Winter Road written by Anne Gunn (Wildlife manager) and published by Yellowknife : N.W.T. Wildlife Service. This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impact of Gordon Lake winter road, Mackenzie District, on Bathurst herd of Rangifer tarandus.
Book Synopsis Barren-ground Caribou Distribution in Late Winter 2004, Central NWT by :
Download or read book Barren-ground Caribou Distribution in Late Winter 2004, Central NWT written by and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The area from Great Slave Lake to the Mackenzie delta and east to the Coronation Gulf area of Nunavut is the wintering range for several barren-ground caribou herds including the Cape Bathurst, Bluenose-West, Bluenose-East and Bathurst herds. Between February and April 2004 we surveyed this area in order to map the distribution of wintering caribou, as some communities had reported the absence of caribou from some of their typical wintering areas. We used fixed winged aircraft flown along predetermined transect lines to map the caribou distribution in survey areas. We found that caribou were widely distributed across the western NWT in late winter 2004 and that the highest concentration of caribou was found southwest of Great Bear Lake. Lower numbers of caribou were on the Arctic coast northeast of Tuktoyaktuk and a band of caribou was spotted extending southeast from Inuvik to northeast of Colville Lake. There were also caribou along the east side of Great Bear Lake to east of the Coppermine River. The Bluenose-West herd normally winters from the southern Tuktoyaktuk Peninsula and Husky Lakes area to Paulatuk and south to Great Bear Lake. However, in winter 2003-2004, most caribou appeared to winter in the area of Great Bear Lake, possibly in response to freezing rain along the coast and deeper snow than usual in the Inuvik Region. As expected, there was also some overlap found between the herds in the use of winter ranges.
Book Synopsis Hunting Patterns and the Distribution of the Beverly, Bathurst and Kaminuriak Caribou Herds Based on the Return of Tags by Hunters by : Douglas C. Heard
Download or read book Hunting Patterns and the Distribution of the Beverly, Bathurst and Kaminuriak Caribou Herds Based on the Return of Tags by Hunters written by Douglas C. Heard and published by . This book was released on 1984 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1959, 10,000 barren-ground caribou (Rangifer tarandus groenlandicus) in the Beverly, Bathurst and Kaminuriak caribou herds of the Northwest Terrirories have been marked with ear tags. The objectives were to determine movement, seasonal distribution, sex and age of caribou shot by hunters. This report analyzes tagging and return data and compars results with those already published.
Book Synopsis Barren-ground Caribou - a Cyclic Species by : Eric Bongelli
Download or read book Barren-ground Caribou - a Cyclic Species written by Eric Bongelli and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike all other members of the deer family, subpopulations of barren-ground caribou (Rangifer tarandus groenlandicus) exhibit fluctuations in numbers that have been described as cyclic. We created a cyclic individual-based annual life table harvest model to examine the sustainability and user-benefits of regulating the harvest during the portion of the cycle characterized by low numbers, low unharvested population growth rates, or both for the Qamanirjuaq caribou subpopulation (Chapter 1). Cyclic population dynamics were modeled using density-driven dynamic responses of both per capita survival and calf production to a cyclic carrying capacity function. Model parameters were empirically identified to produce cycles that replicated observed Qamanirjuaq (Nunavut, Canada) subpopulation dynamics, including changes in population numbers, human harvest, calf production and calf survival rates. We modified the cyclic barren-ground caribou harvest model, developed for the Qamanirjuaq caribou subpopulation, to model the Bathurst and George River subpopulations. We were able to develop models that corresponded to time-series field estimates of population numbers, calf production rates, and calf survival rates of the Bathurst and George River subpopulations, suggesting that the structure of program CARIBOU 1.0 general and robust. We identified three harvest options for the Qamanirjuaq, Bathurst and George River subpopulations: 1) maximized the total number of removals per cycle, 2) minimized the number of years with imposed restrictions, and 3) minimized the degree and frequency of differences between strata harvests (maximized "evenness"). The range of sustainable harvest options was large for all three subpopulations, and thus offers a framework to exploring harvest strategy options in consultations and co-management planning. Deliberate reduction of harvest during the decline and early increase phases of the cycle significantly reduced the period when subpopulations were too small or increasing too slowly to sustain a harvest at basic needs levels.
Author :Ecological Stratification Working Group (Canada) Publisher :Centre for Land and Biological Resources Research ; Hull, Quebec : State of the Environment Directorate ISBN 13 : Total Pages :140 pages Book Rating :4.:/5 (31 download)
Book Synopsis A National Ecological Framework for Canada by : Ecological Stratification Working Group (Canada)
Download or read book A National Ecological Framework for Canada written by Ecological Stratification Working Group (Canada) and published by Centre for Land and Biological Resources Research ; Hull, Quebec : State of the Environment Directorate. This book was released on 1996 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: [An] expanded attribute database [that] includes attribute data for the ecoprovince level of generalization.
Book Synopsis An Operations Guide to Barren-ground Caribou Calving Ground Density, Dispersion and Distribution Surveys, Based on an Assessment of the June 2007 and 2008 Surveys, Northwest Territories and Nunavut by : Kim Gordon Poole
Download or read book An Operations Guide to Barren-ground Caribou Calving Ground Density, Dispersion and Distribution Surveys, Based on an Assessment of the June 2007 and 2008 Surveys, Northwest Territories and Nunavut written by Kim Gordon Poole and published by . This book was released on 2014 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Barren-ground Caribou (Rangifer Tarandus Granti) of the Porcupine Herd Wintering in the Richardson Mountains by : Wolfgang H. Hoffmann
Download or read book The Barren-ground Caribou (Rangifer Tarandus Granti) of the Porcupine Herd Wintering in the Richardson Mountains written by Wolfgang H. Hoffmann and published by . This book was released on 1975 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report of a study to obtain baseline information on the Porcupine caribou herd frequenting winter ranges in the Richardson Mountains of the NWT.
Book Synopsis Long-Term Habitat Trends in Barren-ground Caribou by : Lori White
Download or read book Long-Term Habitat Trends in Barren-ground Caribou written by Lori White and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calving and Related Social Behavior in the Barren-ground Caribou by : Peter C. Lent
Download or read book Calving and Related Social Behavior in the Barren-ground Caribou written by Peter C. Lent and published by . This book was released on 1964 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral thesis resulting from studies made on Rangifer tarandus groenlandicus during four seasons of observation in northwest Alaska.
Book Synopsis Winter Forage Selection by Barren-ground Caribou by : Lisa Beth Saperstein
Download or read book Winter Forage Selection by Barren-ground Caribou written by Lisa Beth Saperstein and published by . This book was released on 1993 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology of the Kaminuriak Population of Barren-ground Caribou [part 2]. by : Canadian Wildlife Ser
Download or read book Biology of the Kaminuriak Population of Barren-ground Caribou [part 2]. written by Canadian Wildlife Ser and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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