Ecological Land Type

ELT 125c

Description: 
North slope from Sykes Knob to Mt. Bigelow
Area: 
159 ha
Area in acres: 
395 acres
Elevation Range
Minimum: 
2103 m
Minimum in ft: 
6901 ft
Maximum: 
2550 m
Maximum in ft: 
8365 ft
Median: 
2324 m
Median in ft: 
7625 ft
Soil Summary: 
detailed soil survey information is not available for this unit; correlates with GES unit 476 characterized by extremely cobbly sandy loams shallow to deep to granite or granite-like bedrock, acid soils lacking lime throughout, minimal soil development, and associated rock outcroppings
Geologic Materials: 
slope alluvium, colluvium and residuum associated with Middle Proterozoic Apache Group and Troy Quartzite (Ya) and unnamed granite (Twl). They comprise 88% and 11% of the unit, respectively
Landforms: 
moderately to finely dissected mountain slopes with shallow to moderate drainage incision
LTA 125
Mixed conifer forest on mountains derived mostly from metasedimentary rocks

Map with the ELT 125c polygon highlighted.Photo Point 157Photo Point 156Photo Point 154Photo Point 267Photo Point 266Photo Point 270Photo Point 269Photo Point 268Photo Point 276, Photo Point 277Photo Point 275

Landform position classes and corresponding vegetation*

Landform Class Area Percentage of ELTsort icon Vegetation and notes
very moist steep slopes 40 ha 25

Doug fir/white fir/Gambel oak/locust/aspen - note lack of pines
cool aspect scarps, cliffs, canyons 40 ha 26

Doug fir/SW pine/Gambel oak/locust/aspen
hot aspect scarps, cliffs, canyons 5 ha 4

Silverleaf Oak/Ponderosa Pine/Ceanothus
moderately moist steep slopes 72 ha 45

Doug fir/SW pine/Gambel oak/locust/aspen

*Vegetation estimates are based on field observations, data from photo points, and the ReGAP map (http://earth.gis.usu.edu/swgap/).

Region 3 Mid-Scale Vegetation Cover Classes

Cover Class Area Percentage of ELTsort icon
Tree cc 10 - 29.9% 1 ha 1
Sparsely vegetated, <10% vegetative cover (includes areas of high severity burns, 2002-03) 7 ha 5
Tree cc 30+% 151 ha 95