Bulletins 2 & 3. Linear Disturbance in the Castle and Implications for Grizzly Bear and Trout
(2016-09-20) The second and third bulletins in this series on disturbance issues in the Castle Wilderness examine the length of linear disturbances and their density in the newly proposed parks. There was a total of 1,823 km of linear features (e.g. roads, trails, and transmission lines). The density of linear disturbances in the provincial park was 3.5 km/km2, while in the wildland provincial park it was just over 1 km/km2. Thresholds described in the scientific literature to maintain core habitat for grizzly bears are 0.6 km/km2 and 0.69 km/km2 for bull trout. The third bulletin details findings of analyses regarding the density of disturbances in relation to grizzly bear habitat, as well as westslope cutthroat and trout habitat.
The map below shows linear disturbances in the Castle area. Use the links further down to download the bulletins and get the full story.