Results 31 to 40 of about 7,621 (257)
Glucuronidation in the polar bear (Ursus maritimus)
Marine Environmental Research, 2004 Polar bears bioaccumulate lipophilic pollutants, including polychlorinated biphenyls (PCBs), into their bodies from their exclusive diet of marine organisms. Hydroxylated PCB metabolites (OH-PCBs) have been found in plasma, presumably due to CYP-dependent biotransformation of PCBs in liver.
Department of Medicinal Chemistry, University of Florida, P.O. Box 100485 S.W. Archer Road, Room P6-20, Gainesville, FL 32610-0485, USA ( host institution ) +2 more
openaire +3 more sources
Forros, Revista Mexicana de Ciencias Geológicas, vol. 40, núm. 2, agosto 2023
Revista Mexicana de Ciencias Geológicas, 2023 Imagen de la portada: Comparación del extremo distal del húmero de dos osos: un Agriotherium fósil y un Ursus Maritimus reciente. A la izquierda, Agriotherium (MPGJ 5676) de la cuenca de Juchipila, Zacatecas, México, edad Henfiliano temprano-tardío ...
Revista Mexicana de Ciencias geológicas
doaj
Environment International, 2013 Legacy organochlorine contaminants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010.
Rune Dietz +6 more
doaj +1 more source
Environment International, 2013 Brominated flame retardants were determined in adipose tissues from 294 polar bears (Ursus maritimus) sampled in East Greenland in 23 of the 28 years between 1983 and 2010.
Rune Dietz +8 more
doaj +1 more source
Ursids evolved early and continuously to be low-protein macronutrient omnivores
Scientific Reports, 2022 The eight species of bears world-wide consume a wide variety of diets. Some are specialists with extensive anatomical and physiological adaptations necessary to exploit specific foods or environments [e.g., polar bears (Ursus maritimus), giant pandas ...
Charles T. Robbins +7 more
doaj +1 more source
Polar bear attack on a juvenile narwhal
Fauna Norvegica, 1990 A juvenile female narwhal Monodon monoceros landed at Pond Inlet had several sets of scratches on the posterior part of the body. They were probably made by a polar bear Ursus maritimus in the course of an unsuccessful attack.
Michael C.S. Kingsley
doaj +1 more source
Bear presence attracts avian predators but does not impact lesser snow goose daily nest attendance
Journal of Avian Biology, 2022 The presence of foraging bears in Arctic breeding bird colonies has been increasingly reported in the literature, and these may constitute disturbance events which cause incubating birds to leave their nest.
Andrew F. Barnas +6 more
doaj +1 more source
Post-conflict movements of polar bears in western Hudson Bay, Canada
Arctic Science, 2023 Human–carnivore conflicts have increased as habitat has been affected by development and climate change. Understanding how biological factors, environment, and management decisions affect the behaviour of animals may reduce conflicts.
Erin N. Miller +4 more
doaj +1 more source
Transitions of social-ecological subsistence systems in the Arctic [PDF]
, 2017 Transitions of social-ecological systems (SES) expose governance systems to new challenges. This is particularly so in the Arctic where resource systems are increasingly subjected to global warming, industrial development and globalization which ...
Clark, Douglas A. +3 more
core +4 more sources
Novel range overlap of three ursids in the Canadian subarctic
Arctic Science, 2019 We describe for the first time in the peer-reviewed literature observations of American black bear (Ursus americanus Pallas, 1780), grizzly bear (Ursus arctos Linnaeus, 1758), and polar bear (Ursus maritimus Phipps, 1774) at the same locations.
Douglas Andrew Clark +5 more
doaj +1 more source