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Showing 1 to 20 of 88 for “"Ursus"”.
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Seasonal Reproduction in the Male Black Bear Ursus Americanusc and Male Polar Bear Ursus Maritimus
Both the black bear (Ursus americanus) and polar bear (Ursus maritimus) are long day seasonal breeders. Males undergo testicular regression during the non-mating season and testicular recrudescence during the pre-mating season. The present investigation was undertaken to begin to study the role of …
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Management of brown bears (Ursus arctos) in Europe
Successful conservation of brown bears (Ursus arctos) in Europe is associated with public acceptance of damages caused by bears. Recent increases in sheep depredation and beehive damage in central Austria resulted in the deaths of two bears there. Since bear numbers are low in most European …
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MULTISCALE EFFECTS OF FOREST ROADS ON BLACK BEARS (URSUS AMERICANUS)
… patterns of a population of black bears (Ursus americanus) in the Coeur d’Alene Mountains of northern Idaho, USA. This black bear population is exposed to high hunting and recreational pressure facilitated by a dense network of forest roads and its close proximity to Coeur d’Alene, Idaho …
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MULTISCALE EFFECTS OF FOREST ROADS ON BLACK BEARS (URSUS AMERICANUS)
… patterns of a population of black bears (Ursus americanus) in the Coeur d’Alene Mountains of northern Idaho, USA. This black bear population is exposed to high hunting and recreational pressure facilitated by a dense network of forest roads and its close proximity to Coeur d’Alene, Idaho …
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Population dynamics of Virginia's hunted black bear (Ursus americanus) population
The Cooperative Alleghany Bear Study (CABS) was initiated in 1994 by the Virginia Department of Game and Inland Fisheries (VDGIF) and the Virginia Polytechnic Institute and State University (VPI&SU) to investigate population dynamics on Virginia's hunted bear population. CABS personnel handled 746 …
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Polar Bear (Ursus Maritimus) Foraging Ecology in the Western Canadian Arctic
… ice over the past three decades. Polar bears (Ursus maritimus) rely on sea ice as their primary habitat to hunt marine mammal prey. Due to their position at the top of the Arctic marine food web, polar bear foraging patterns can provide insights on ecosystem structure and function both …
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THE GUT MICROBIOTA OF A WILD AMERICAN BLACK BEAR (Ursus americanus) POPULATION
… of wildlife such as American black bear (<em>Ursus americanus</em>). Additionally, much of our knowledge of wildlife-GMB relationships is based on studies of colon GMB communities derived from the feces of captive specimens. To better understand wildlife-GMB relationships, I first aimed to …
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Estimating Population Numbers of Black Bears (Ursus Americanus) in Eastern Kentucky Using Microsatellite Analysis
Black bears (Ursus americanus) occur sporadically in eastern Kentucky, and there is some evidence that a breeding population exists. In order to establish management practices to enhance the black bear population in Kentucky, information about this population is needed. However, until recently, no …
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Ecology and Structure of Black Bear (Ursus americanus) Populations in the Interior Highlands of Arkansas
… means contributed to the decline of black bears (Ursus americanus). Bears were extirpated from the majority of the region by the 1940's Oklahoma by 1915 and from Missouri by 1931. From 1958-1968, the Arkansas Game and Fish Commission undertook a reintroduction to the Ouachita and the Ozark …
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Are black bears (Ursus americanus) effective seed dispersal agents? With a little help from their friends.
Black bears (Ursus americanus) are generally considered effective seed dispersal agents for fleshy-fruited plants because they can consume hundreds of fruits at once and have large home ranges. Seedlings can emerge from fecal piles, but if any seeds are removed from feces by rodents, it is often …
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Development and application of an antibody-based protein microarray to assess stress in grizzly bears (Ursus arctos)
… high mortality of young, such as grizzly bears (Ursus arctos), which leads to delayed information for land managers trying to find the balance between human use of land and preservation of wildlife. Concern about population health of grizzlies in Western Alberta, Canada has lead to investigation …
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Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos)
The objectives of the present study were to: 1) compare body temperature of anesthetized brown bears obtained by Vital Sense® capsules (VS) inserted gastrically to those obtained by deep rectal VS and handheld digital thermometer (HDT) and 2) to evaluate the decrease in core body temperature …
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Seasonal movements, habitat selection, and food habits of black bears (Ursus americanus) in Shenandoah National Park, Virginia
… habits, and habitat selection of black bears (<i>Ursus americanus</i>) in Shenandoah National Park, Virginia were studied from May 1982 to April 1985. A total of 47 collared bears, including 25 adult females, 17 adult males, and 5 subadult males < 3.5 years old, was located 3973 times during the …
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Assessment of Physiological Challenges in Overwintering Black Bears (Ursus americanus): Active Gestation, Neonatal Growth, and Skeletal Muscle Conservation
The American black bear (ABB) (Ursus americanus) exhibits physiological strategies highly synchronized with the environment. Such strategies enable bears to exploit food resources when available and survive the winter months by hibernating without ingesting food or water. However, there are …
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Using Minimally Invasive Sampling Methods to Evaluate Polar Bear (Ursus maritimus) Visitation in Response to Environmental and Anthropogenic Stimuli
Polar bears (Ursus maritimus) are spending more and more time on land in an increasingly warming Arctic, raising concerns for both human safety and polar bear conservation. This research aimed to investigate the ecological and anthropogenic influences on polar bear visitation to infrastructure in …
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