Results 21 to 30 of about 1,267 (165)
Predation of a denned Black Bear, Ursus americanus, by a Grizzly Bear, U. arctos
The Canadian field-naturalist, 2000 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Boyd, Diane K., Heger, Edgar E.
openaire +2 more sources
Efficacy of Killing Large Carnivores to Enhance Moose Harvests: New Insights from a Long-Term View
Diversity, 2022 We analyzed harvest data to test hypotheses that nearly 4 decades of effort to reduce abundance of brown bears (Ursus arctos), black bears (U. americanus) and gray wolves (Canis lupus) in an 60,542 km2 area in south-central Alaska (Game Management Unit ...
Sterling D. Miller +2 more
doaj +1 more source
Molecular Phylogeny and SNP Variation of Polar Bears (Ursus maritimus), Brown Bears (U. arctos), and Black Bears (U. americanus) Derived from Genome Sequences [PDF]
Journal of Heredity, 2014 We assessed the relationships of polar bears (Ursus maritimus), brown bears (U. arctos), and black bears (U. americanus) with high throughput genomic sequencing data with an average coverage of 25× for each species. A total of 1.4 billion 100-bp paired-end reads were assembled using the polar bear and annotated giant panda (Ailuropoda melanoleuca ...
Matthew A, Cronin +6 more
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People and Nature, EarlyView.Abstract The long history of reindeer herding in Fennoscandia has shaped the mountain tundra by influencing its productivity, nutrient and carbon cycling and vegetation structure. By partly limiting shrub expansion, extensive reindeer grazing contributes to ecosystem resilience and helps mitigate climate change effects.
Marianne Stoessel +2 more
wiley +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.This study proposes an automated method to infer brown bear hair snare interactions by detecting bipedal behavior in camera‐trap images using a pose estimation model and a multilayer perceptron (MLP). A YOLO‐based model, fine‐tuned from humans and dogs to a custom dataset, achieved high performance (≈93% keypoint precision and ≈96% classification ...
Arnau Campanera‐Moliné +8 more
wiley +1 more source
Wildlife Biology, EarlyView.Ever‐growing human activities present an active and continuing threat to many species throughout the world. Nevertheless, concerted conservation efforts in some regions have balanced these threats and allowed endangered species to recolonise former parts of their original ranges and reverse their decline.
Kilian Hughes +2 more
wiley +1 more source
Genomic evidence for island population conversion resolves conflicting theories of polar bear evolution. [PDF]
PLoS Genetics, 2013 Despite extensive genetic analysis, the evolutionary relationship between polar bears (Ursus maritimus) and brown bears (U. arctos) remains unclear. The two most recent comprehensive reports indicate a recent divergence with little subsequent admixture ...
James A Cahill +10 more
doaj +1 more source
Šumarski list, 2009 Family of bears (Ursidae) have a potential to exhibit various characteristics under the influence of environment and nutrition. The goal of this paper was to analyze craniometrical measurements of brown bear (Ursus arctosL.) population from Croatia with objectives to define them, as well as to determinate differences between sexes. A total of 34 skulls
Farkaš, Vladimir +6 more
openaire +4 more sources
Grizzly Bear, Ursus arctos, predation of a denned adult Black Bear, U. americanus
The Canadian field-naturalist, 1993 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Smith, Martin E., Follmann, Erich H.
openaire +1 more source
Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects
Wildlife Biology, EarlyView.Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer +8 more
wiley +1 more source