Wildlife Specialist report
Wildlife Specialist report
Wildlife Specialist report
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Reticulate Gila Monster (Forest Service Sensitive Species Representative of Desert<br />
Shrub/Grassland Vegetation Cover Types) - In New Mexico, this species occurs in<br />
desert scrub and, more rarely, woodland and grassland habitats most commonly<br />
associated with rocky regions of mountain foothills and canyons. It is found from sea<br />
level to about 5000 ft in elevation (Stebbins 1985). Dominant vegetation often includes<br />
creosote bush, mesquite, acacia, ocotillo, and snakeweed. The seasonal activity period<br />
extends from March to November, although Gila monsters can be encountered basking at<br />
shelter entrances during the winter and early spring. Above ground travels range from a<br />
few meters around shelter entrances, to forays over 1.5 km, and these lizards can also<br />
climb (Degenhardt 1996, BISON-M 2009).<br />
This species has been selected as focal species for reptiles that occur in desert shrub, and<br />
grassland vegetation areas. For the analysis of this species the analysis indicators (road<br />
miles and acres of potential disturbance) will analyze the change in desert shrub and<br />
grassland habitat by alternative from the existing condition.<br />
Amphibian and Reptile Summary:<br />
Table 37 list road associated and motorized trail/ORV factors related to amphibian and<br />
reptile focal species that represent this group (Gaines et al. 2003); analysis factors based<br />
on the analysis factor discussed above; and the indicator that will be used to compare the<br />
different levels of affect between the different alternatives.<br />
Table 37:<br />
Focal Group/<br />
Species<br />
Amphibians &<br />
Reptiles<br />
Road Associated<br />
Factors<br />
Collisions, Collection Collisions³<br />
Collection<br />
Disturbance,<br />
Displacement,<br />
Avoidance, Harassment<br />
Motorized<br />
Trail/ORV<br />
Associated Factors¹<br />
Disturbance,<br />
Displacement, Avoidance,<br />
Harassment<br />
Combined<br />
Analysis Factors<br />
Analysis<br />
Indicator<br />
Harvest/Direct Effects Route Miles<br />
Disturbance/Indirect<br />
Effects<br />
Disturbance Zone<br />
Summarized In<br />
Acres<br />
Table 38 summarizes the harvest indicator, disturbance indicator, and analysis area that<br />
will be used to analyze the effects of the different alternatives to amphibians and reptiles.<br />
Table 38:<br />
Focal Species Motorized<br />
Chiricahua<br />
leopard frog<br />
Mexican<br />
Gartersnake<br />
Arizona Toad<br />
Narrow Headed<br />
Gartersnake<br />
Retculate Gila<br />
Monster<br />
Activity<br />
Motorized Trail/ORV<br />
Use<br />
Motorized Trail/ORV<br />
and Roads<br />
Motorized Trail/ORV<br />
and Roads<br />
Motorized Trail/ORV<br />
and Roads<br />
Harvest<br />
Indicator<br />
Route Miles<br />
Number of<br />
Stream<br />
Crossings<br />
Route Miles<br />
Route Miles<br />
Route Miles<br />
Disturbance<br />
Analysis<br />
Zone<br />
Area<br />
Miles of routes within:<br />
Occupied Sites<br />
- 1 mile overland<br />
- 3 miles along an ephemeral or<br />
intermittent drainage<br />
- 5 miles along a perennial stream<br />
250m Low Elevation<br />
Riparian<br />
”<br />
”<br />
Low, Middle, & High<br />
Elevation Riparian<br />
Desert<br />
Shrub/Grassland<br />
60