2.9 Grey wolf and golden jackal vehicle collisions
We obtained vehicle collision locations of grey wolf and golden jackal
during 2013-2018 from the Markazi DOE. The road crossing data for grey
wolf and golden jackal were obtained from a variety of sources including
opportunistic direct observation and environmental guards (from 2013 and
2018).
2.10 Evaluating congruence between crossing points and
predicted connectivity
We used a spatial randomization testing procedure to evaluate congruence
between the locations where grey wolf and golden jackal were observed
crossing the road and predict connectivity in each combination of the
resistance surface and connectivity model (Cushman et al., 2014).
Spatial randomization testing of this kind is recommended in cases where
there is spatial dependence among observations and produces an unbiased
estimate of the probability of the observed outcome given the data
(Cushman et al., 2014).
We compared the median value of predicted connectivity for the 170
golden jackal and 101 grey wolf crossing locations with the distribution
of median values of 1 × 107 random samples of 170 and
101 sites along the highway within the study area. For each combination
of the resistance surface and connectivity modeling approach, we
calculated the ranking of the median of observed values within the
distribution of the medians of the 1 × 107 random
samples.