Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 564 for “"bears"”.
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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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Causes and consequences of sexual habitat segregation in grizzly bears
… (additive, compensatory, depensatory). Twenty bears were radio-monitored from 1980 to 1984 in Kananaskis, Alberta and 28 bears were radio-monitored from 1985 to 1990 in the Selkirk Mountains of Idaho and British Columbia. The Kananaskis population had high mortality of older adult males and a …
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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 d’Alene, …
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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 d’Alene, …
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Systematic classification of black bears in the southeastern United States
… be warranted for the Florida and Louisiana black bears; however, both groups of populations should be considered as distinct population segments for listing under the Endangered Species Act of 1973. I also assessed any genetic effects that may have been caused by translocation of bears from …
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Bears Ears National Monument, Relationship, and the Rhetoric of Public Lands
… lands through three case studies related to Bears Ears National Monument (BENM). I argue that a central part of what makes public lands rhetorical are the relationships that people have with the lands, or the experiences, interactions, and meanings that they associate with the land. Chapter …
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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
… 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 reproductive …
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From brains to bears. understanding brain size evolution: causes, costs and benefits
… cognitive abilities of 17 captive European brown bears (Ursus arctos arctos) were tested via two behavioural problem-solving trials. Results revealed evidence of trial-and-error learning; however, two juveniles appeared to acquire an association between the latch and access to the box, suggesting …
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Bears and numbers : investigating whether short-sellers exploit accounting-based pricing anomalies
This paper examines whether short-sellers (bears) exploit post-earnings-announcement-drift (PEAD) and the accruals anomaly. I first find that short interest is higher during the period that follows a negative earnings surprise and, to a lesser extent, the announcement of earnings that contains an …
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Response of black bears to gypsy moth infestation in Shenandoah National Park, Virginia
The effects of gypsy moth infestation 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). …
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Black bears in Canyon de Chelly National Monument: Life in a changing environment
… 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 angustifolia) …
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Home range dynamics of black bears in the Alleghany Mountains of western Virginia
… 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 (AMA, HRE, and ABODE) and determined the HRE was the least biased and produced the most biologically reasonable home range …
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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 bears …
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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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Mitochondrial DNA analysis of the evolution and genetic diversity of ancient and extinct bears.
… in relation to the phylogeography of brown bears (Ursus arctos) in Europe (Chapter 2- 4) and across the Eurasian continent (Chapter 5) throughout the Late Pleistocene and Holocene periods. Similarly, a study of the genetic diversity and phylogeography of the extinct giant short-faced bear …
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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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