Results 31 to 40 of about 1,121 (156)

Estimating unrecorded human-caused mortalities of grizzly bears in the Flathead Valley, British Columbia, Canada [PDF]

PeerJ, 2018
Managing the number of grizzly bear (Ursus arctos) mortalities to a sustainable level is fundamental to bear conservation. All known grizzly bear deaths are recorded by management agencies but the number of human-caused grizzly bear deaths that are not ...
Bruce N. McLellan, Garth Mowat, Clayton T. Lamb   +2 more
doaj   +2 more sources

Conservation of Threatened Canada-USA Trans-border Grizzly Bears Linked to Comprehensive Conflict Reduction

Human-Wildlife Interactions, 2018
Mortality resulting from human–wildlife conflicts affects wildlife populations globally. Since 2004, we have been researching conservation issues and implementing a comprehensive program to reduce human–bear conflicts (Ursus spp.; HBC) for 3 small ...
Michael F. Proctor, Wayne F. Kasworm, Kimberly M. Annis, A. Grant MacHutchon, Justin E. Teisberg, Thomas G. Radandt, Chris Servheen   +6 more
doaj   +1 more source

Mad cow policy and management of grizzly bear incidents

Wildlife Society Bulletin, 2012
Protection of humans and livestock from disease has been used to justify many aggressive and costly wildlife control programs. Recent regulatory changes on livestock carcass disposal aimed at controlling the spread of bovine spongiform encephalopathy in ...
Joseph M. Northrup, Mark S. Boyce
doaj   +1 more source

The impact of roads on the demography of grizzly bears in Alberta.

PLoS ONE, 2014
One of the principal factors that have reduced grizzly bear populations has been the creation of human access into grizzly bear habitat by roads built for resource extraction.
John Boulanger, Gordon B Stenhouse
doaj   +1 more source

Comparison of methanol and isopropanol as wash solvents for determination of hair cortisol concentration in grizzly bears and polar bears

MethodsX, 2017
Methodological differences among laboratories are recognized as significant sources of variation in quantification of hair cortisol concentration (HCC).
Thomas Kroshko, Luciene Kapronczai, Marc R.L. Cattet, Bryan J. Macbeth, Gordon B. Stenhouse, Martyn E. Obbard, David M. Janz   +6 more
doaj   +1 more source

Review of the united states fish and wildlife service’s 2017 endangered species act delisting rule for the greater yellowstone ecosystem grizzly bear

Frontiers in Conservation Science
The Greater Yellowstone Ecosystem grizzly bear (Ursus arctos horribilis) population and four other populations were listed as “threatened” in the lower 48 states by the US Fish and Wildlife Service (USFWS) on July 28, 1975, based on the 1973 Endangered ...
Craig L. Shafer
doaj   +1 more source

Grizzly Bear in Danger [PDF]

Oryx, 1966
From 1949 to 1960 the barren-ground grizzly bear was totally protected in the Northwest Territories of Canada, with the result that numbers increased and so did their range. But pressure from trappers led in 1960 to an amendment legalising die killing of grizzlies in defence of life or property, and in 1964, despite the views of wildlife biologists and
openaire   +1 more source

Whitebark pine, population density, and home-range size of grizzly bears in the greater yellowstone ecosystem. [PDF]

PLoS ONE, 2014
Changes in life history traits of species can be an important indicator of potential factors influencing populations. For grizzly bears (Ursus arctos) in the Greater Yellowstone Ecosystem (GYE), recent decline of whitebark pine (WBP; Pinus albicaulis ...
Daniel D Bjornlie, Frank T Van Manen, Michael R Ebinger, Mark A Haroldson, Daniel J Thompson, Cecily M Costello   +5 more
doaj   +1 more source

Comparing Space Use and Fecal Glucocorticoid Concentrations during and after the COVID-19 Closure to Investigate Visitor Effects in Multiple Species

Journal of Zoological and Botanical Gardens, 2022
We used the COVID-19 pandemic closure at the Saint Louis Zoo to examine visitor effects on space use and glucocorticoid levels in banteng, grizzly bears, polar bears, and western lowland gorillas.
Ashley N. Edes, Nathan C. Liu, Eli Baskir, Karen L. Bauman, Corinne P. Kozlowski, Helen L. Clawitter, David M. Powell   +6 more
doaj   +1 more source

How People Should Respond When Encountering a Large Carnivore: Opinions of Wildlife Professionals

Human-Wildlife Interactions, 2017
We conducted telephone surveys of wildlife professionals who work with large carnivores to ask their opinions about how people should respond to avoid being injured when confronted by a black bear (Ursus americana), grizzly bear (Ursus arctos), mountain ...
Dylan E. Brown, Michael R. Conover
doaj   +1 more source