Figure 1.
A sample of photos taken by cameras deployed on roads and trails in southwest Alberta, Canada during the summer of 2008.
We photographed all large mammalian species in southwest Alberta, also including: cougar (top left), wolf (top right), moose (bottom left) and elk (bottom-right).
Figure 2.
Dendrogram of the hierarchical cluster analysis of species presence/absence data that illustrates co-occurrence of species at camera sites in southwest Alberta, Canada during the summer of 2008.
The dendrogram is scaled with the percentage of information remaining in the analysis, where less information remaining indicates a weaker association between species.
Figure 3.
Co-occurrence of species at camera sites as determined by non-metric multidimensional scaling (NMS) ordination of species counts at camera sites in southwest Alberta, Canada during the summer of 2008.
Ordinations along axis one are indicated. Location along axis one where the NMS score equals zero is indicated by a vertical dashed line.
Figure 4.
Regression tree analysis of large mammalian prey counts at camera sites in southwest Alberta, Canada during the summer of 2008.
For each partition of the tree (indicated by arrows), the explanatory variable is shown with the value that best determines the partition (i.e., the cut-off point that maximizes homogeneity within a group). Indicated at each node are the number of cameras in the group and the mean number of prey photographs per 100 days (with standard deviation in parentheses).
Figure 5.
Regression tree analysis of large mammalian predator counts at camera sites in southwest Alberta, Canada during the summer of 2008.
For each partition of the tree (indicated by arrows), the explanatory variable is indicated with the value that best determines the partition (i.e., the cut-off point that maximizes homogeneity within a group). Indicated at each node are the number of cameras in the group and the mean number of predator photographs per 100 days (with standard deviation in parentheses).