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North American caribou (Rangifer tarandus) herds commonly exhibit little nuclear genetic differentiation among adjacent herds, although available evidence supports strong demographic separation, even for herds with seasonal range overlap. During 1997–2003, we studied the Mentasta and Nelchina caribou herds in south-central Alaska using radiotelemetry to determine individual movements and range overlap during the breeding season, and nuclear and mitochondrial DNA (mtDNA) markers to assess levels of genetic differentiation. Although the herds were considered discrete because females calved in separate regions, individual movements and breeding-range overlap in some years provided opportunity for male-mediated gene...
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A content analysis of PCMB meeting minutes from its first meeting to 1993 reveals a repeated pattern of communication in which Native hunters pose questions about the need for caribou research requiring the use of aircraft and collars and the handling of animals, and a response by agency managers to inform community residents about the value of collars in science and/or demonstrating their application. Never discussed openly at PCMB meetings was what the Gwich'in regard as a negotiated order of power-sharing arrangement between Gwich'in and caribou, established in the time before there was time, nunh ttrotsit ultsui gwuno (when the earth was first made), when caribou were people and people were caribou. As told...
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Nutritional restrictions in winter may reduce the availability of protein for reproduction and survival in northern ungulates. We refined a technique that uses recently voided excreta on snow to assess protein status in wild caribou (Rangifer tarandus) in late winter. Our study was the first application of this non-invasive, isotopic approach to assess protein status of wild caribou by determining dietary and endogenous contributions of nitrogen (N) to urinary urea. We used isotopic ratios of N (?15N) in urine and fecal samples to estimate the proportion of urea N derived from body N (p-UN) in pregnant, adult females of the Chisana Herd, a small population that ranged across the Alaska-Yukon border. We took advantage...
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Studies moose or Alces alces, caribou or Rangifer tarandus and grizzly bear or Ursus arctos distribution in relation to road traffic in Denali National Park, Alaska. Development of wildlife monitoring system using 19 landscape level viewsheds stratified into four sections based on decreasing traffic along the road corridor; Absence of traffic avoidance patterns for caribou and grizzly bears.
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The Chisana caribou herd (CCH) is a small international herd occurring in Yukon and Alaska on the Klutlan Plateau and near the headwaters of the White River. During the 1990s through 2003, the herd experienced a long and steady decline in population. Low recruitment, predation, climate, habitat, and harvest pressure likely all contributed to the decline. From 2003 to 2006, a recovery effort designed to increase recruitment and calf survival was conducted. Pregnant cows were captured and enclosed within a holding pen during the last weeks of gestation and a few weeks following calving. During recovery planning and upon the completion of the program, the need for a management plan was stressed by the recovery team....
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To conserve woodland caribou, resource managers and biologists must understand the processes governing movements and distribution of those animals. I employed a scale-explicit approach to understand some of the mechanisms influencing caribou behaviour. I trailed caribou in forested and alpine habitats and recorded attributes of feeding sites and patches. At larger scales, I used GPS collars to record the movements of caribou. At the scale of the feeding site, caribou cratered at locations with lower snow depths and greater amounts of a variety of terrestrial lichen species. Following increases in snow depth, hardness, and density, caribou in the forest fed more frequently at trees with abundant arboreal lichens....
map background search result map search result map An isotopic approach to measuring nitrogen balance in caribou Using temporary dye marks to estimate ungulate population abundance in southwest Yukon, Canada Population characteristics, space use and habitat selection of two non-migratory caribou herds in central Alaska, 1994 - 2009 Extraordinary movements of the Denali caribou herd following the perfect storm A multi-scale behavioural approach to understanding the movements of woodland caribou Winter habitat selection by caribou in relation to lichen abundance, wildfires, grazing, and landscape characteristics in northwest Alaska Western Arctic caribou herd winter habitat monitoring and utilization, 1995-1996 Finlayson caribou herd late-winter population survey, 2007 Little Rancheria Caribou in the Yukon: Evaluation of Winter Habitat Quality and Habitat Use Caribou Hunters and Researchers at the Co-management Interface: Emergent Dilemmas and the Dynamics of Legitimacy in Power Sharing Moose, Caribou, and Grizzly Bear Distribution in Relation to Road Traffic in Denali National Park, Alaska Response of Overwintering Caribou to Burned Habitat in Northwest Alaska Management Plan for the Chisana Caribou Herd 2010-2015 Population dynamics of interior and southwest Alaska caribou herds Caribou management report of survey-inventory activities, 1 July, 1998 - 30 June, 2000 Population dynamics of wolves and their prey in Denali National Park, Alaska: progress report (May 2000 - April 2001) Range overlap and individual movements during breeding season influence genetic relationships of caribou herds in south-central Alaska 2010 Population Estimate of the Chisana Caribou Herd 2010 Population Estimate of the Chisana Caribou Herd Using temporary dye marks to estimate ungulate population abundance in southwest Yukon, Canada Management Plan for the Chisana Caribou Herd 2010-2015 A multi-scale behavioural approach to understanding the movements of woodland caribou Finlayson caribou herd late-winter population survey, 2007 Moose, Caribou, and Grizzly Bear Distribution in Relation to Road Traffic in Denali National Park, Alaska Population dynamics of wolves and their prey in Denali National Park, Alaska: progress report (May 2000 - April 2001) Extraordinary movements of the Denali caribou herd following the perfect storm Range overlap and individual movements during breeding season influence genetic relationships of caribou herds in south-central Alaska An isotopic approach to measuring nitrogen balance in caribou Population characteristics, space use and habitat selection of two non-migratory caribou herds in central Alaska, 1994 - 2009 Population dynamics of interior and southwest Alaska caribou herds Little Rancheria Caribou in the Yukon: Evaluation of Winter Habitat Quality and Habitat Use Caribou Hunters and Researchers at the Co-management Interface: Emergent Dilemmas and the Dynamics of Legitimacy in Power Sharing Winter habitat selection by caribou in relation to lichen abundance, wildfires, grazing, and landscape characteristics in northwest Alaska Western Arctic caribou herd winter habitat monitoring and utilization, 1995-1996 Response of Overwintering Caribou to Burned Habitat in Northwest Alaska Caribou management report of survey-inventory activities, 1 July, 1998 - 30 June, 2000