Table 2. Summary of biophysical settings (strata) and associated plot sample sizes used in the terrestrial GRTS sample draw. The number of plots per strata is proportionate to the available acreage, with a minimum sample size of three per strata. Plot weights are the scaling factors used to extrapolate plot level data to the entire sample area; in this example, individual sample plots represent between 10,000 and 12,500 acres. Strata - Landfire Biophysical Setting Plots per Group Stratum acres Proportional area strata Plot weights Wyoming Big Sage-Wheatgrass-3 370,000 0.31 31 11935.5 Mountain Sagebrush-Bluebunch Wheatgrass-Idaho Fescue-4 200,000 0.17 17 11764.7 Low Sage-Idaho Fescue-3 50,000 0.04 4 12500.0 Western Juniper-Utah Juniper-3 300,000 0.25 25 12000.0 Bluebunch Wheatgrass-Sandberg Bluegrass-1 150,000 0.13 13 11538.5 Quaking Aspen-4 100,000 0.08 8 12500.0 Cottonwood-Narrowleaf Willow-3 30,000 0.03 3 10000.0 1,200,000 1.00 100 NA Total 3. Summary of Strahler stream order categories (strata) and associated sample sizes used in the aquatic GRTS sample draw. The number of sites per strata is proportionate to the available stream kilometers, with a minimum sample size of three per strata. Site weights are the scaling factors used to extrapolate site level data to the entire sample area; in this example, individual sample sites represent between 20 and 53 stream kilometers. Strata - Strahler Stream order Proportional categories Stream km length Sites per strata Site weights Small streams (1st and 2nd order) 847.3 0.73 16 53.0 Large streams (3rd and 4th order) 250.8 0.22 46.3 Rivers (5th+) 59.2 0.05 3 19.7
Table 2. Summary of biophysical settings (strata) and associated plot sample sizes used in the terrestrial GRTS sample draw. The number of plots per strata is proportionate to the available acreage, with a minimum sample size of three per strata. Plot weights are the scaling factors used to extrapolate plot level data to the entire sample area; in this example, individual sample plots represent between 10,000 and 12,500 acres. Strata - Landfire Biophysical Setting Group Stratum acres Proportional area Plots per strata Plot weights Wyoming Big Sage-Wheatgrass-3 370,000 0.31 31 11935.5 Mountain Sagebrush-Bluebunch Wheatgrass-Idaho Fescue-4 200,000 0.17 17 11764.7 Low Sage-Idaho Fescue-3 50,000 0.04 4 12500.0 Western Juniper-Utah Juniper-3 300,000 0.25 25 12000.0 Bluebunch Wheatgrass-Sandberg Bluegrass-1 150,000 0.13 13 11538.5 Quaking Aspen-4 100,000 0.08 8 12500.0 Cottonwood-Narrowleaf Willow-3 30,000 0.03 3 10000.0 Total 1,200,000 1.00 100 NA 3. Summary of Strahler stream order categories (strata) and associated sample sizes used in the aquatic GRTS sample draw. The number of sites per strata is proportionate to the available stream kilometers, with a minimum sample size of three per strata. Site weights are the scaling factors used to extrapolate site level data to the entire sample area; in this example, individual sample sites represent between 20 and 53 stream kilometers. Strata - Strahler Stream order categories Stream km Proportional length Sites per strata Site weights Small streams (1st and 2nd order) 847.3 0.73 16 53.0 Large streams (3rd and 4th order) 250.8 0.22 46.3 Rivers (5th+) 59.2 0.05 3 19.7
AIM-Project-Design_Template.docx