Gbp 2004 10 rpt phdthesishabitatecologyconservationprojectedpopulationviabilityofgrizzlybearsinwestc

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of grizzly bear management. Indices of attractive sink provide a mechanism for identifying areas in most need of management attention to minimize the likelihood of contact between humans and bears, while safe-harbor sites identify habitats in most need of continual protection or inclusion in a system of reserves, both a conservation priority for grizzly bears in Alberta. 5.2. A conservation strategy using habitat states Instead of using attractive sink and safe-harbor indices, which were continuous metrics of non-secure and secure habitat, we proposed an alternate approach that identified categorical states based again on the 2-dimensional model of habitat occupancy and mortality risk (similar to Naves et al., 2003). Using thresholds of mortality risk (2 categories) and habitat occupancy (3 categories), we defined non-critical habitats, secondary and primary sinks, and secondary and primary habitats. Primary habitats closely corresponded to high safe-harbor scores, while primary sinks were correlated with high attractive sink values. Proportions of each habitat state varied among management zone and land cover class with overall composition dominated by non-critical habitat, followed by secondary habitat, primary habitat, secondary sink, and primary sink. Although primary sinks were low in overall composition, they were once again concentrated to river bottoms and valleys throughout the study area. For some regions of Whitehorse Wildlands, and especially that southern Jasper National Park, primary and secondary sinks were potentially over-predicted as levels of recreational use for many areas were much lower than the baseline model from Nielsen et al. (2004a) in Banff National Park. In fact, total grizzly bear mortalities since the mid-1970s in Jasper National Park have been substantially lower than in Banff National Park, despite Jasper National Park being larger in size (Benn and Herrero, 2002). Replacing primary and secondary sinks with primary and secondary habitats for low recreational use trails in Jasper and Whitehorse Wildlands should be considered. Regardless, patterns of primary and secondary sinks and habitats within crown lands, where the majority of human activities and conservation concerns reside, appear reasonable. We propose that stakeholders involved in grizzly bear management and conservation on Alberta crown lands consider tracing changes within the 5 hypothetical habitat states during resource planning. Specifically, we suggest a process of habitat balancing with

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