3.6 Spatial randomization test:
During the study period (2013-2018), 173 golden jackal and 103 wolf
vehicle collisions were recorded. Most golden jackal road mortalities
occurred in the spring (n=63) and winter seasons (n=46), while for grey
wolf most collisions occurred in summer (n=20) and winter (n=35) seasons
(Table 5). We also gathered 101 and 170 additional gray wolf and golden
jackal crossing locations, respectively from observation.
Table 5: Annual distribution of road mortality for the two
study species Canis lupus and C. aureus, on the Markazi
Province’s main and secondary roads (Iran).
We found our connectivity model very strongly predicted grey wolf
(Figure 7) and golden jackal (Figure 8) highway crossing locations
(Table 6). Crossings have a significantly higher connectivity score than
the randomly-selected locations (P < 0.00001).
Fig 7. Spatial randomization test: the crossing location of grey wolf
has a much higher connectivity score than the randomization. A solid
vertical line shows the median of 101 crossing locations. Transparent
bars show the distribution of the median connectivity values of 10000
random spatial samples across the road network.
Fig 8. Spatial randomization test: the crossing location of golden
jackal has a much higher connectivity score than the randomization.
Solid vertical line shows the median of 170 crossing locations.
Transparent bars show the distribution of the median connectivity values
of 10000 random spatial samples along the road network.
Table 6. Maximum, minimum, median, and average value of grey wolf and
golden jackal crossing locations compare with 10000 random points.