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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...
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Caribou (Rangifer tarandus) are an integral part of the ecological and cultural fabric of northwest Alaska. Western Arctic Herd (WAH) caribou roam over this entire region, including all 5 Arctic Network Inventory and Monitoring Program (ARCN) National Park Units. Conservation of healthy caribou populations are specifically mentioned within the enabling legislation (Alaska National Interested Lands Conservation Act or ANILCA) of three of these Parks and is of critical concern to subsistence hunters within this region. Caribou are, by far, the most abundant large mammal in northwest Alaska and are famous for their long-distance migrations and large population oscillations. For these reasons, ARCN chose WAH caribou...
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Caribou (Rangifer tarandus) are an integral part of the ecological and cultural fabric of northwest Alaska. Western Arctic Herd (WAH) caribou roam over this entire region, including all 5 Arctic Network Inventory and Monitoring Program (ARCN) National Park Units. Conservation of healthy caribou populations are specifically mentioned within the enabling legislation (Alaska National Interested Lands Conservation Act or ANILCA) of three of these Parks and is of critical concern to subsistence hunters within this region. Caribou are, by far, the most abundant large mammal in northwest Alaska and are famous for their long-distance migrations and large population oscillations. For these reasons, ARCN chose WAH caribou...
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Predation, habitat, hunting, and environmental conditions have all been implicated as regulatory mechanisms in ungulate populations. The low-density equilibrium hypothesis predicts that in low-density populations, predators regulate their prey and that the population will not escape unless predation pressure is eased. We evaluated survival of adult and juvenile moose (Alces alces) in north-central Alaska to determine whether or not the population supported the hypothesis. We instrumented adult male and female moose with radiocollars and used aerial observations to track parturition and subsequent survival of juvenile moose. Generalized linear mixed-effects models were used to assess survival. Adult annual survival...
map background search result map search result map Changes in vegetative cover on Western Arctic Herd winter range from 1981 to 2005: potential effects of grazing and climate change Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2011-August 2012 Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2012-August 2013 Moose movement patterns in the upper Koyukuk River drainage, northcentral Alaska Variation in fine-scale movements of moose in the upper Koyukuk River drainage, northcentral Alaska Winter range studies of the Western Arctic Caribou Herd, Northwest Alaska Quantifying telemetry collar bias when age is unknown: A simulation study with a long-lived ungulate Modeling influences on winter distribution of caribou in northwestern Alaska through use of satellite telemetry Population characteristics, space use and habitat selection of two non-migratory caribou herds in central Alaska, 1994 - 2009 Winter habitat selection by caribou in relation to lichen abundance, wildfires, grazing, and landscape characteristics in northwest Alaska Diets of Overwintering Caribou, Rangifer tarandus, Track Decadal Changes in Arctic Tundra Vegetation Response of Overwintering Caribou to Burned Habitat in Northwest Alaska Winter habitat use by female caribou in relation to wildland fires in interior Alaska Variation in growth and survival of young female caribou Caribou Vital Sign Annual Report for the Arctic Network Inventory and Monitoring Program September 2009-August 2011 Fire, Grazing History, Lichen Abundance, and Winter Distribution of Caribou in Alaska's Taiga Simulating the Influences of various Fire Regimes on Caribou Winter Habitat Lying in wait: Limiting factors on a low-density ungulate population and the latent traits that can facilitate escape from them Fire, Grazing History, Lichen Abundance, and Winter Distribution of Caribou in Alaska's Taiga Moose movement patterns in the upper Koyukuk River drainage, northcentral Alaska Variation in fine-scale movements of moose in the upper Koyukuk River drainage, northcentral Alaska Lying in wait: Limiting factors on a low-density ungulate population and the latent traits that can facilitate escape from them Variation in growth and survival of young female caribou Winter habitat use by female caribou in relation to wildland fires in interior Alaska Simulating the Influences of various Fire Regimes on Caribou Winter Habitat Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2012-August 2013 Winter range studies of the Western Arctic Caribou Herd, Northwest Alaska Population characteristics, space use and habitat selection of two non-migratory caribou herds in central Alaska, 1994 - 2009 Caribou vital sign annual report for the Arctic Network Inventory and Monitoring Program: September 2011-August 2012 Caribou Vital Sign Annual Report for the Arctic Network Inventory and Monitoring Program September 2009-August 2011 Quantifying telemetry collar bias when age is unknown: A simulation study with a long-lived ungulate Changes in vegetative cover on Western Arctic Herd winter range from 1981 to 2005: potential effects of grazing and climate change Winter habitat selection by caribou in relation to lichen abundance, wildfires, grazing, and landscape characteristics in northwest Alaska Diets of Overwintering Caribou, Rangifer tarandus, Track Decadal Changes in Arctic Tundra Vegetation Response of Overwintering Caribou to Burned Habitat in Northwest Alaska Modeling influences on winter distribution of caribou in northwestern Alaska through use of satellite telemetry