Mostrando 221 - 240 Resultados de 250 Para Buscar '"Ursus arctos"', tiempo de consulta: 0.78s Limitar resultados
  1. 221
    “…By visiting locations of 37 individuals during 274 bear-days, we documented foods consumed by grizzly (Ursus arctos) and black bears (Ursus americanus) in Grand Teton National Park during 2004–2006. …”
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    Diet and Macronutrient Optimization in Wild Ursids: A Comparison of Grizzly Bears with Sympatric and Allopatric Black Bears
  2. 222
    “…ABSTRACT: Three brown bear (Ursus arctos arctos) individuals and two sloth bear (Melursus ursinus inornatus) individuals were observed in captivity to produce behavioural profiles for each individual. …”
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    Behavioural Profiles of Brown and Sloth Bears in Captivity
  3. 223
    “…We used a space–time permutation scan statistic (STPSS) clustering method (SaTScan) to detect predation events of grizzly bears (Ursus arctos) fitted with satellite transmitting GPS collars. …”
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    Space–time clusters for early detection of grizzly bear predation
  4. 224
    “…We used Light Detection and Ranging (LiDAR) data, and GPS locations, to understand how vegetation and other attributes of seismic lines influence movements of two predators, wolves (Canis lupus) and grizzly bears (Ursus arctos). During winter, wolves moved towards seismic lines regardless of vegetation height, while during spring wolves moved towards seismic lines with higher vegetation. …”
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    Natural regeneration on seismic lines influences movement behaviour of wolves and grizzly bears
  5. 225
    “…We assessed the innate ability of the untrained domestic dog to detect faecal scents of wild Eurasian brown bear (Ursus arctos arctos) and European lynx (Lynx lynx). The study monitored 82 domestic dogs across the UK and Norway. …”
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    Fears from the past? The innate ability of dogs to detect predator scents
  6. 226
    “…We developed a noninvasive method that uses photographs to assess the body condition of free-ranging brown bears (Ursus arctos) in the Shiretoko Peninsula, Hokkaido, Japan. …”
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    Development of a noninvasive photograph-based method for the evaluation of body condition in free-ranging brown bears
  7. 227
    “…Male brown bears, Ursus arctos, mark trees with a secretion from glands located on their back. …”
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    Brown bear communication hubs: patterns and correlates of tree rubbing and pedal marking at a long-term marking site
  8. 228
    “…We estimated vital rates and trends in two adjacent but genetically distinct, threatened brown bear (Ursus arctos) populations in British Columbia, Canada, following the cessation of hunting. …”
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    Vital rates of two small populations of brown bears in Canada and range‐wide relationship between population size and trend
  9. 229
    “…Brown bears (Ursus arctos) hibernate for 5–6 months during winter, but despite kidney insufficiency, dyslipidemia and inactivity they do not seem to develop atherosclerosis or cardiovascular disease (CVD). …”
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    Potential natural immunization against atherosclerosis in hibernating bears
  10. 230
    “…ABSTRACT: In September 2019, two gravid female brown bears (Ursus arctos) were captured and equipped with GPS/GSM collars in Paklenica National Park (Croatia). …”
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    Very Small Home Ranges of Two Gravid European Brown Bears during Hyperphagia
  11. 231
    “…We compared its performance across species and on a pre-existing wild brown bear Ursus arctos dataset (BearID), to examine the robustness of convolutional neural networks trained on animals under human care. …”
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    Multispecies facial detection for individual identification of wildlife: a case study across ursids
  12. 232
    “…On the basis of constructing a spatial association network of species, we analyzed the status of medium and small carnivores in the network, characterized their association, and assessed their contribution to the maintenance of the community in the absence of large carnivores, such as gray wolf (Canis lupus) and brown bear (Ursus arctos). Furthermore, the development trends of the community were predicted in order to act as a guide for the direction and focus of conservation efforts. …”
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    The Ecological Roles of Medium and Small Carnivores in the Terrestrial Animal Community in Liancheng National Nature Reserve, China
  13. 233
    “…We reassessed phylogeographical patterns of a classic model species of postglacial recolonisation, the brown bear (Ursus arctos), using a range-wide resequencing dataset of 128 nuclear genomes. …”
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    Range-wide whole-genome resequencing of the brown bear reveals drivers of intraspecies divergence
  14. 234
    “…BACKGROUND: Individual body growth is controlled in large part by the spatial and temporal heterogeneity of, and competition for, resources. Grizzly bears (Ursus arctos L.) are an excellent species for studying the effects of resource heterogeneity and maternal effects (i.e. silver spoon) on life history traits such as body size because their habitats are highly variable in space and time. …”
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    Environmental, biological and anthropogenic effects on grizzly bear body size: temporal and spatial considerations
  15. 235
    “…BACKGROUND: For brown bears (Ursus arctos), hibernation is a critical part of the annual life cycle because energy savings during hibernation can be crucial for overwintering, and females give birth to cubs at that time. …”
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    The seasonal sensitivity of brown bear denning phenology in response to climatic variability
  16. 236
    “…Skull specimens from: southern sea otter (Enhydra lutris nereis), Eastern Pacific harbor seal (Phoca vitulina), California sea lion (Zalophus californianus), northern fur seal (Callorhinus ursinus), walrus (Odobenus rosmarus), polar bear (Ursus maritimus), North American brown bear (Ursus arctos), American black bear (Ursus americanus), California mountain lion (Puma concolor couguar), California bobcat (Lynx rufus californicus), gray fox (Urocyon cinereoargenteus), kit fox (Vulpes macrotis), and gray wolf (Canis lupus) (n = 5,011) were macroscopically examined for dental and temporomandibular joint (TMJ) pathology. …”
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    Temporomandibular Joint Pathology of Wild Carnivores in the Western USA
  17. 237
    “…We surveyed over 1300 km to detect scats of bears (Ursus arctos/U. americanus), cougars (Puma concolor), coyotes (Canis latrans), and wolves (C. lupus). …”
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    Beyond the encounter: Predicting multi‐predator risk to elk (Cervus canadensis) in summer using predator scats
  18. 238
    “…Therefore, we evaluated abundance estimates generated from grid and targeted sampling designs using simulations based on geographic positioning system (GPS) data from 42 Alaskan brown bears (Ursus arctos). Migratory salmon drew brown bears from the wider landscape, concentrating them at anadromous streams. …”
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    Sampling designs matching species biology produce accurate and affordable abundance indices
  19. 239
    “…In Sweden, brown bears (Ursus arctos) forage on carpenter ants (Camponotus herculeanus) during summer, and may select for this food source within clearcuts. …”
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    A “clearcut” case? Brown bear selection of coarse woody debris and carpenter ants on clearcuts
  20. 240
    “…Here, we used the brown bear (Ursus arctos) as a model species to quantify selective foraging on berries in different habitats during hyperphagia in autumn prior to hibernation. …”
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    Bears and berries: species-specific selective foraging on a patchily distributed food resource in a human-altered landscape
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