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Showing 1 to 20 of 22 for “"Ursus arctos"”.
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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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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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THE BROWN BEAR GUT MICROBIOME: A NOVEL TOOL FOR CONSERVATION & MANAGEMENT
… be realized fully. Here, I use brown bears (<em>Ursus arctos</em>) as an ecological model to investigate (1) how both extrinsic and intrinsic factors influence GMB community membership and structure; and (2) the correlation between GMB membership and brown bear health metrics. To achieve these …
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FECAL CORTISOL METABOLITES: A NON-INVASIVE METHOD FOR MONITORING THE LONG-TERM HEALTH OF FREE RANGING BROWN BEARS
… and FCM concentrations in brown bears (<em>Ursus arctos</em>), and (2) evaluate whether ecotourism elicits a measurable stress response in a free-ranging brown bears. For my first objective, I conducted an adrenocorticotropic hormone (ACTH) challenge on nine captive brown bears at the …
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Apport de données d’ADN nucléaire à la Phylogénie et à la Biologie de la Conservation des Ursidae
… samples of fossils of North African brown bears (Ursus arctos). The last chapter of this manuscript illustrates how the palaeogenetics can help palaeontology interpreting the variability of fossil forms.
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Ursidos del pleistoceno-holoceno de la Península Ibérica
… dentición de las cuatro especies más frecuentes: Ursus etruscus, Ursus deningeri, Ursus spelaeus y Ursus arctos; también se ha procedido al análisis simultáneo de las posibles diferencias métricas existente entre los molariformes de oso de las cavernas de los yacimientos mejor representados. Se …
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Causes and consequences of sexual habitat segregation in grizzly bears
… use and population dynamics of 2 grizzly bear (Ursus arctos) populations to test 3 competing hypotheses of sexual habitat segregation (no avoidance, food competition, and sex competition) and 3competing hypotheses on the effects of adult male mortality on female reproduction (additive, …
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Lead exposure in large carnivores in the greater Yellowstone ecosystem
… mammalian carnivores, such as grizzly bears (Ursus arctos), are also known to target these gut piles as a food source while others, such as cougars (Puma concolor), avoid areas with high levels of human hunting pressure. I investigated whether large carnivores in the Greater Yellowstone …
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Lead exposure in large carnivores in the greater Yellowstone ecosystem
… mammalian carnivores, such as grizzly bears (Ursus arctos), are also known to target these gut piles as a food source while others, such as cougars (Puma concolor), avoid areas with high levels of human hunting pressure. I investigated whether large carnivores in the Greater Yellowstone …
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Phylogenetic inference using ancient environmental DNA
… with material from two closely related species, Ursus arctos or the American black bear and Arctodus simus or the extinct giant short-faced bear. By comparing the ancient sequence against a modern reference panel of black bears and a high-quality fossil giant short-faced bear reference, I infer …
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Using Noninvasive Genetic Sampling to Assess and Monitor Grizzly Bear Population Status in the Northern Continental Divide Ecosystem
… often imprecise. The threatened grizzly bear (Ursus arctos) population in northwestern Montana has been managed for recovery since 1975, yet no rigorous data were available to evaluate the program’s success. We assessed population status using data from a large noninvasive genetic sampling …
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Using Noninvasive Genetic Sampling to Assess and Monitor Grizzly Bear Population Status in the Northern Continental Divide Ecosystem
… often imprecise. The threatened grizzly bear (Ursus arctos) population in northwestern Montana has been managed for recovery since 1975, yet no rigorous data were available to evaluate the program’s success. We assessed population status using data from a large noninvasive genetic sampling …
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Mitochondrial DNA analysis of the evolution and genetic diversity of ancient and extinct bears.
… 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 (Arctodus …
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