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Showing 1 to 20 of 69 for “"black bears"”.
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MULTISCALE EFFECTS OF FOREST ROADS ON BLACK BEARS (URSUS AMERICANUS)
… and activity 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 …
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MULTISCALE EFFECTS OF FOREST ROADS ON BLACK BEARS (URSUS AMERICANUS)
… and activity 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 …
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Systematic classification of black bears in the southeastern United States
… genetic variation within and between 18 American black bear (Ursus americanus) populations in the southeastern United States using multilocus DNA fingerprinting techniques (Hinf I restriction digests, Jeffreys’ 33.15 probe). Band-sharing data indicated that American black bear populations (U. a. …
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Survival, reproduction, and movements of translocated nuisance black bears in Virginia
Forty-three radio-collared black bears (Ursus americanus) captured in northwestern Virginia were released in the Mt. Rogers National Recreation Area (MRA) in southwestern Virginia, and monitored from June 1990-March 1992. Survival was 0.23 over the 22 month study; male (0.12) and female (0.37) …
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Reproduction, Survival, and Denning Ecology of Black Bears in Southwestern Virginia
Thirty-four (6 M, 28 F) of 93 black bears (<i>Ursus americanus</i>) captured during summers 1995 and 1996 were equipped with radio-collars. The mean age of male and females captured was 2.5 (<u>n</u> = 63; 2 males not aged) and 4.4 (<u>n</u> = 28) years, respectively. The mean date of females in …
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Population Ecology of Black Bears in the Alleghany Mountains of Virginia
… the ecology of a hunted population of American black bears (Ursus americanus) in the Alleghany Mountains of western Virginia. Over the course of our research, we handled 1,041 individual bears >18 months old and gathered reproductive data from females during 424 bear-winters. My analyses of 183 …
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Digestibility of Foods and Anthropogenic Feeding of Black Bears in Virginia
… have provided an unknown amount of food to black bears <i>(Ursus americanus)</i> in Virginia, supplementing their natural food supply. Possible effects of feeding bears can be negative, such as food conditioning and habituation to people, or positive, such as enhanced or sustained …
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Response of black bears to gypsy moth infestation in Shenandoah National Park, Virginia
… on the Shenandoah National Park (SNP) black bear population and habitat were studied during 1985 - 1991 by comparing radio telemetry, population, and behavioral data from preinfestation years (1982 - 1986) and years with extensive defoliation (1987 - 1991). Gypsy moth defoliation (> 60% …
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Black bears in Canyon de Chelly National Monument: Life in a changing environment
… fine-scale and landscape-level habitat use of black bears in Canyon de Chelly National Monument (CACH), Arizona, USA in the context of large-scale landscape change. Currently, CACH is undergoing a large-scale restoration effort to remove all of the non-native Russian olive (Elaeagnus …
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Home range dynamics of black bears in the Alleghany Mountains of western Virginia
… the lack of biological and ecological data for black bear (Ursus americanus) populations in the Alleghany Mountains of western Virginia. I examined home range dynamics of bears during 1994-2002 on 2 study areas that were approximately 160 km apart. I analyzed my data with 3 home range programs …
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Population dynamics and denning ecology of black bears in Shenandoah National Park, Virginia
… population dynamics and denninq ecology of black bears (Ursus americanus) were investigated in Shenandoah National Park, Virginia. Foot snares and culvert traps were used to capture 115 bears a total of 149 times. Radio transmitter collars were fitted to 47 bears. The age structure of the …
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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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Survival, family breakups, and dispersal of yearling and subadult black bears in western Virginia
… and dispersal patterns for yearling and subadult bears in hunted black bear (Ursus americanus) populations in North America are scarce. We estimated survival rates of yearling and subadult black bears from a hunted population in western Virginia during 1999 - 2002. We captured and marked 307 …
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Hunting dynamics, condition estimates, and movements of black bears hunted with hounds in Virginia
… resulted in a chase and 24% to 44% of these bears treed. A 2nd chase occurred in 11% to 96% of attempts and 9% to 50% of bears treed. Five to 17% of the 1st bears and 13% to 21% of 2nd bears were harvested. Field surveys found virtually no differences in hunting effort or success between …
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Aspects of Reproduction and Cub Survival in a Hunted Population of Virginia Black Bears
We measured black bear (Ursus americanus) reproduction and cub survival during 1994 - 1998, and 1995 - 1999, respectively, in the George Washington and Jefferson National Forests in Virginia to determine age-specific and overall cub production and cub survival. We observed females in estrus between …
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Distribution and Relative Abundance of Nutrient Transporter mRNA in the Gastrointestinal Tract of Black Bears
Black bears are omnivorous, and tend to be opportunistic feeders, in that they will eat what is readily abundant or available. The end-products of intestinal digestion are absorbed by the body through the action of transporter proteins expressed on the brushborder membrane of small intestinal …
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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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DNA-based Population Estimation, Harvest Vulnerability, and Home Range Dynamics of Black Bears in Western Maryland
After nearly being extirpated from the state, black bears in Maryland have rebounded to a point where recreational harvest has now become an important management tool. Having a better understanding of bear population parameters, movements, and harvest vulnerability allows managers to implement …
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