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All Politics Articles
The authors believe that communication within and among agency personnel in the United States and Canada about the successes and failures of their human-bear (Ursidae) management programs will increase the effectiveness of these programs and of bear research. To communicate more effectively, they suggest agencies clearly define terms and concepts used in human-bear management and use them in a consistent manner. They constructed a human-bear management lexicon of terms and concepts using a modified Delphi method to provide a resource that facilitates more effective communication among human-bear management agencies.
There's a need for officials to come up with a better definition of a bear 'attack.' Calling a single bite to a foot from a 60-pound yearling an attack, when the bite didn't require medical attention, seems a stretch. Lack of knowledge and fear of lawsuits drive decisions to 'play it safe' and kill bears that raise questions. Killing a bear is the easy way out.
This book examines the challenges facing grizzly populations in Canada and the United States.
See how Whistler scored in terms of meeting the six criteria for becoming a BearSmart Community.
The small and isolated population of brown bears (Ursus arctos marsicanus) in the Central Apennines, Italy, has been protected since the establishment of the National Park of Abruzzo, Lazio and Molise in 1923, but little active management has been implemented during the past decades to ensure effective conservation of this population. Being almost exclusively distributed within the National Park and its immediate surrounding mountains, the Apennine brown bear population suffered high human-caused mortality in the last 3 decades, but no reliable estimates of its size, trends, and vital statistics have ever been produced. Given the paucity of
information available at the international level, the authors have critically reviewed the status of the Apennine brown bear population and have summarized data and information concerning past management.
This paper evaluates the long-term (100-year) persistence of a grizzly bear population in Alberta, Canada using forest simulations and habitat modelling. Even with harvesting the same volume of timber, natural disturbance-based forestry resulted in a larger human footprint than traditional two-pass forestry with road densities reaching 1.39 km/km2 or more than three times baseline conditions and suggested maximum levels of security for grizzly bears. Natural disturbance-based forestry is an ill-suited management tool for sustaining declining populations of grizzly bears. A management model that explicitly considers road access is more likely to improve grizzly bear population persistence than changing the size of clear-cuts.
This paper describes a method of estimating relative habitat states and conditions as surrogates of fitness (i.e. survival) using models of occupancy and mortality risk. Primary sinks or high attractive sinks were evident in the foothills where bears were using forest edges associated with forestry and oil and gas activities on Crown lands, while primary habitats or safe harbour sites were most common to protected alpine/sub-alpine sites.
Grizzly bear populations in Alberta are threatened by habitat loss and high rates of human-caused mortality. The goal of this paper, Nielsen's PHD thesis, was to examine and model habitat factors, both natural and anthropogenic, related to habitat selection, mortality, and persistence of grizzly bears in west-central Alberta.
The following report summarises causes of changes in nuisance activity by black bears based on a review of published and unpublished literature. The review focuses first on factors that may affect the reporting rate for nuisance bear activity, then on causes of variation in nuisance activity itself.
The 2002 status report for the Alberta grizzly bear population is a little out-dated given the recent completion of DNA-based population estimates in Alberta, but it provides a good background on grizzly bear management in Alberta. Although the population estimates are inaccurate and unscientific, it does indentify the usual suite of long-term threats: human-caused mortality, and uncontrolled human access and industrial and recreational activity.
Understanding rates and causes of grizzly bear (Ursus arctos) mortality is critical to their conservation. Using data obtained from 13 study areas in the Rocky and Columbia mountains of Alberta, British Columbia, Montana, Idaho, and Washington, the authors estimated survival rates and causes of mortalities for 388 grizzly bears radio-collared for research purposes between 1975 and 1997.
Although open garbage pits are being phased out, hundreds remain, especially in black bear habitat. This paper reviews and summarizes information on the use of dumps by black bears and on bear-human interactions in northeastern Minnesota. The data were collected during ecological studies of black bears during 1969-1986.
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