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Conclusions: Habitat changes resulting from timber harvest have altered the predator–prey balance leading to asymmetric predation affecting the survivial rates of endangered mountain caribou Thresholds/Learnings: As young forest stands increase in proportion to old forests, caribou population densities and survival rates decline as they become increasingly vulnerable to predation and extripation. Synopsis: Timber harvesting in areas of Mountain Caribou habitat have created landscapes of early seral forests. Such habitat changes have altered the predator–prey balance resulting in asymmetric predation in which predators are maintained by alternative prey (i.e. apparent competition). This study estimates survival...
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Conclusions: Caribou subpopulation persistence and landscape occupancy depends highly on the degree of forest cover, cover type, and distance from human presence. Thresholds/Learnings: Synopsis: This study evaluates factors influencing the persistence and landscape occupancy of caribou subpopulations in southern British Columbia. Data from 235 radio-collared caribou across 13 subpopulations were used to derive a landscape occupancy index. The index was analyzed against 33 landscape variables including, land cover, terrain, climate, and human influence. At the metapopulation level, the persistence of subpopulations correlated with the extent of wet climate conditions and the distribution of old forests and alpine...
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Probability that current range will support a self-sustaining population of boreal caribou, based on integrated probability assignments that considered population trend and size, and level of disturbance associated with anthropogenic activities and fire (see Section 2.6.5 in Environment Canada 2008 report; details, below). This dataset is not an illustration of whether a population is recoverable or not, rather, it is an indication of the degree of habitat change necessary to enable a population to be self-sustaining (e.g. to persist without the need for ongoing management intervention). Environment Canada. 2008. Scientifi c Review for the Identifi cation of Critical Habitat for Woodland Caribou (Rangifer tarandus...
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We used the Muskwa-Kechika Management Area in northeast British Columbia, Canada as a case study to determine potential conflicts between future resource development and high-value habitats of large mammals in an undeveloped boreal landscape. More than 50 % of high-value habitats for caribou, moose, elk, wolves and grizzly bears were located in Special Resource Management Zones, where natural resource developments could occur. We developed geographic information system (GIS) layers of potential forest resources, oil and gas, minerals, wind power, all resources combined, and roads; and quantified the proportions of high-value habitats overlapping these potentials. Greater proportions of high-value habitats across...
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Conclusions: Caribou mortalities attributed to wolf predation were generally closer to a corridor, indicating that linear corridors may enhance wolf predation efficiency. Therefore, caribou existing closer to linear corridors are at a higher risk of depredation than those farther from corridors. Thresholds/Learnings: Synopsis: This study tested the hypothesis that linear corridors affect caribou and wolf activities by examining the distribution of telemetry locations of caribou and wolves, as well as locations of caribou mortality and caribou predation by wolves relative to linear corridors caused by roads, seismic lines, power lines, and pipeline rights-of-way. Caribou mortalities attributed to wolf predation...
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We used the Muskwa-Kechika Management Area in northeast British Columbia, Canada as a case study to determine potential conflicts between future resource development and high-value habitats of large mammals in an undeveloped boreal landscape. More than 50 % of high-value habitats for caribou, moose, elk, wolves and grizzly bears were located in Special Resource Management Zones, where natural resource developments could occur. We developed geographic information system (GIS) layers of potential forest resources, oil and gas, minerals, wind power, all resources combined, and roads; and quantified the proportions of high-value habitats overlapping these potentials. Greater proportions of high-value habitats across...
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This dataset was compiled by the NBCTSC and illustrates the occurrence of woodland caribou (Rangifer tarandus caribou, forest-dwelling ecotype) across Canada as depicted in the Draft National Recovery Strategy, based on information provided by provincial and territorial jurisdictions (Environment Canada 2007). There are three woodland caribou populations identified: Northern Mountain, Southern Mountain, and Boreal. Environment Canada. 2007. Recovery Strategy for the Woodland Caribou (Rangifer tarandus caribou), Boreal Population, in Canada. Draft, June 2007. Species at Risk Act Recovery Strategy Series. Ottawa: Environment Canada. v + 48 pp. plus appendices.


    map background search result map search result map Factors influencing the dispersion and fragmentation of endangered mountain caribou populations Distribution of caribou and wolves in relation to linear corridors Changes in landscape composition influence the decline of a threatened woodland caribou population Canadian boreal caribou herd viability Mountain and Boreal Woodland Caribou (forest-dwelling ecotype) Occurrence in Canada Potential conflict between future development of natural resources and high-value wildlife habitats in boreal landscapes Distribution of caribou and wolves in relation to linear corridors Factors influencing the dispersion and fragmentation of endangered mountain caribou populations Changes in landscape composition influence the decline of a threatened woodland caribou population Potential conflict between future development of natural resources and high-value wildlife habitats in boreal landscapes Mountain and Boreal Woodland Caribou (forest-dwelling ecotype) Occurrence in Canada Canadian boreal caribou herd viability