Parent Layer: Bathurst Caribou Range Plan

Name: Centre of Habitation

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Description: The center of habitation can be considered a core use or refuge area that includes important habitats and migration paths, which a population occupies and uses when it is at dwindling numbers in its natural cycle. As a caribou population increases from a nadir in abundance in its natural cycle, the animals extend their seasonal movements from the center of habitation and gradually use more areas and travel greater distances. The proposed boundaries of the COH are based on a) recent caribou collar location data that reflects its current contracted annual range use at a time when the population is critically low, and b) GIS data that comprise locations and characteristics of important areas and habitats for caribou that have been identified and shared by traditional knowledge holders on the range of the Bathurst herd. The current core use area was delineated based on a 95% annual utilization distribution (UD) polygon depicting annual range use by cows for a total of 70.5 caribou-years between 2015 and 2017. The 95% annual UD was superimposed over available traditional knowledge datasets that were made available through the Working Group and represented seasonal migration routes, as well as water crossings and land bridges. Based on the overlay with traditional knowledge datasets, we expanded the 95% annual UD in two areas to include land bridges, priority water crossings and associated migration pathways. As a final illustrative step, the COH was overlayed with the weighted relative range sensitivity map (see Section 4.2.3.2 of the Bathurst Caribou Range Plan) and the range assessment areas (see Section 3.1.5 of the Bathurst Caribou Range Plan) to further highlight important areas for Bathurst caribou at the annual range scale.The boundaries of the COH should be considered preliminary and revisited as new information becomes available and through the regular assessments of the BCRP.

Copyright Text: Bathurst Range Plan Working Group

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