Results 61 to 70 of about 9,987 (212)
Genetic Structure of American Black Bears in the Desert Southwest of North America [PDF]
, 2007 American black bears (Ursus americanus) have recolonized parts of their former range in the Trans-Pecos region of western Texas after a \u3e40-year absence.
Doan-Crider, Diana L +4 more
core +1 more source
, 1993 Ursus americanus Pallas, 1780. Spicil. Zool., 14:5. TYPE LOCALITY: Not given. In Pallas' (1780) description, he refered to Brickell (1737) who implied North Carolina (USA) by stating they "are very common in this province." Palmer (1904) listed the locality as "eastern North America". DISTRIBUTION: NC Alaska to Labrador and Newfoundland (Canada), south
openaire +1 more source
Wildlife Letters, EarlyView.Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin +2 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological traits such as behaviour, physiology and morphology mediate an organism's interaction with its environment, and understanding their joint contribution to reproductive fitness is essential for predicting biological responses to global change.
Maria Vittoria Mazzamuto +7 more
wiley +1 more source
“Bear-ly” learning: Limits of abstraction in black bear cognition [PDF]
Animal Behavior and Cognition, 2018 We presented two American black bears (Ursus americanus) with a serial list learning memory task, and one of the bears with a matching-to-sample task.
Jennifer Vonk , Stephanie E. Jett
doaj +1 more source
Demographic buffering in natural populations: A multi‐level perspective
Journal of Animal Ecology, EarlyView.We introduce a multi‐level framework that unites stochastic elasticities with nonlinear selection to test demographic buffering. Applying it across mammals reveals a key insight: ecological robustness to variability often decouples from evolutionary constraint, reshaping how we understand resilience under environmental stochasticity.
Gabriel Silva Santos +4 more
wiley +1 more source
Judicial doom of an ursid genome
OryxThe Louisiana black bear Ursus americanus luteolus, a subspecies of the subtropical south-central USA, was protected by the U.S. Endangered Species Act in 1992 but removed from coverage in 2016 based on the alleged presence of two viable native ...
Ronald M. Nowak
doaj +1 more source
Animal Conservation, EarlyView.Using fecal DNA metabarcoding, we quantified dietary overlap among reintroduced fishers and sympatric coyotes, bobcats, and Pacific martens in Washington's North Cascades. Niche overlap was substantial for common prey but varied with body size, revealing fine‐scale resource partitioning that may limit fishers' access to energetically efficient prey ...
Kayla A. Shively +7 more
wiley +1 more source
American Black Bear–Apiary Conflicts in Michigan
Human-Wildlife Interactions, 2017 American black bear (Ursus americanus) damage to apiaries can result in substantial economic loss. We used records of black–bear apiary conflicts collected by the Michigan Department of Natural Resources to characterize damage in the Upper and Northern ...
Beverly K. McKinley +2 more
doaj +1 more source
South American giant short-faced bear (Arctotherium angustidens) diet: evidence from pathology, morphology, stable isotopes, and biomechanics [PDF]
, 2014 Fil: Soibelzon, Leopoldo Héctor. División Paleontología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Grinspan, Gustavo A.. Núcleo de Biomecánica. Espacio Interdisciplinario.
Acosta, Walter G. +6 more
core +1 more source