Results 71 to 80 of about 7,579 (247)
Sex-selective harvesting of polar bears Ursus maritimus
Wildlife Biology, 2008 Abstract We explored limits and consequences of male-biased harvesting of polar bears Ursus maritimus using a simulated population based on empirically-derived estimates of age-specific rates of survival and reproduction. The maximum sustainable yield (MSY) was identified as the total kill in which the number of females that could be taken resulted in ≤
Mitchell K. Taylor +2 more
openaire +1 more source
The European descendants of Ursus etruscus C. Cuvier (Mammalia, Carnivora, Ursidae). [PDF]
, 1992 En este trabajo se revisan el origen, evolucion y distribucion estratigrafica de los osos del Pleistoceno. IS. ruscinensis DEP. puede considerarse como e! ancestro comun: de el derivaria un grupo muy conservador (U. mediterraneus F.
Torres Pérez-Hidalgo, Trinidad José
core +1 more source
Indigenous peoples and local community reports of climate change impacts on biodiversity
Conservation Biology, EarlyView.Abstract Climate change impacts on biodiversity have been primarily studied through ecological research methods, largely ignoring other knowledge systems. Indigenous and local knowledge systems include rich observations of changes in biodiversity that can inform climate change adaptation planning and environmental stewardship.
Albert Cruz‐Gispert +5 more
wiley +1 more source
Judicial Oversight in the Comparative Context: Biodiversity Protection in the United States, Australia, and Canada [PDF]
, 2013 How effective are courts as policymaking institutions? Generally speaking, courts play a far larger role in American biodiversity law than they do in comparable Australian and Canadian statutory programs.
Robert, Shaffer
core +1 more source
Den Collapse Kills Female Polar Bear and Two Newborn Cubs [PDF]
, 1991 A female polar bear (Ursus maritimus) and two newborn cubs were found dead at their den site on the Yukon coast. The site investigation and necropsy indicated that den collapse was the cause of death.Key words: polar bear, Ursus maritimus, den collapse ...
Clarkson, Peter L., Irish, Doug
core +2 more sources
Vulnerability of marine megafauna to global at‐sea anthropogenic threats
Conservation Biology, EarlyView.Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle +309 more
wiley +1 more source
Un pequeño Oso de las Cavernas (Ursus rossicus) del Sur de Siberia, Rusia BARYSHNIKOV, G. [PDF]
, 2001 [Abstract] The skull, mandibles and cheek teeth of U. Rossicus from four localities of the South Siberia are examined. This species inhabited the steppe regions in early Middle and Late Pleistocene. By odontological characters it is more close to U.
Baryshnikov, G., Foronova, I.
core +1 more source
Diversity, 2022 Antibodies to several pathogens were detected in the serum samples of nine polar bears (Ursus maritimus, Phipps, 1774) from areas of the Russian Arctic. Plasma was studied for antibodies to sixteen infectious and parasitic diseases using indirect Protein-
Alexander Yu. Alekseev +5 more
doaj +1 more source
, 1993 {"references": ["Wilson, D. E. 1976. Cranial variation in polar bears. Pp. 447 - 453, in Bears- - their biology and management (M. R. Pelton, J. W. Lentfer, and G. E. Folk, eds.). International Union for the Conservation of Nature, n. s., 40: 1 - 467", "DeMaster, D. P., and I. Stirling. 1981. Ursus maritimus. Mammalian Species, 145: 1 - 7.", "Gromov, I.
openaire +1 more source
Stereotypic route tracing in captive Carnivora is predicted by species-typical home range sizes and hunting styles [PDF]
, 2016 In captive conditions (e.g. zoos), some Carnivora species typically show negligible stereotypic behaviour (SB) and reproduce successfully, while others tend to reproduce poorly and be very stereotypic.
Clubb, Ros +5 more
core +2 more sources