Results 31 to 40 of about 11,153 (217)
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
openaire +2 more sources
Distribution of the brown bear (Ursus arctos marsicanus) in the Central Apennines, Italy, 2005-2014 [PDF]
, 2017 Despite its critical conservation status, no formal estimate of the Apennine brown bear (Ursus arctos marsicanus) distribution has ever been attempted, nor a coordinated effort to compile and verify all recent occurrences has ever been ensured.
Altea, Tiziana +15 more
core
The Journal of Wildlife Management, EarlyView.Management of bison in Yellowstone National Park under the available strategies that maintained ≥3,500 individuals (1:1 sex ratio), removed <40% of the population at a time and prioritized relatives for removal were predicted to maintain genetic variation at levels consistent with long‐term conservation (>95% of existing variation).
Shawna J. Zimmerman +2 more
wiley +1 more source
Density‐dependent habitat selection in plains bison
The Journal of Wildlife Management, EarlyView.Using GPS collar data, we tested whether habitat selection of plains bison in Grasslands National Park, Canada, was density dependent. Bison selected for areas of high vegetation productivity far from human activity when population density was low and increased use of lower productivity habitat closer to disturbance as density increased.
Michelle L. Sawatzky +3 more
wiley +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
Formas arcaicas y recientes de Ursus spelaeus en Lombardía y la región de Venecia (Norte de Italia) [PDF]
, 2001 [Abstract] Some Ursus spelaeus Rosenmüller-Heinroth, 1784 cranial and mandibular remains coming from Northern Italy (Lombardy Region -Buco dell’Orso Cave, Laglio, Como-) and from Venetia Region (Cerè, S.
Rossi, M., Santi, G.
core +2 more sources
Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain [PDF]
, 2018 Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY
Bombieri, Giulia +10 more
core +2 more sources
Familiarity and aggression shape long‐term associations and mortality risk in a solitary ungulate
Oikos, EarlyView.Periodic social interactions are important to animal fitness, even in solitary species. For solitary species, these interactions can be unexpected and shaped by previous encounters. Despite being aggressive and largely solitary, black rhinoceroses Diceros bicornis are commonly seen in groups, suggesting they may engage in more social behaviours than ...
Rachel M. Stein, Adrian M. Shrader
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