Stream/river strata: Strahler stream order categories from the NHD+, medium resolution version 2.0 Table 1. Management objectives, example AIM indicators, and the methods to be used evaluating the attainment of management objectives. Assessing the attainment of management objectives requires a statement of the desired condition per indicator (i.e., condition threshold), as well as the amount or proportion of the resource that can deviate from a condition threshold before management actions are needed. Proportion of Management allowable objectives Condition departure (summarized from Example determination Condition (e.g., acres or above) indicators method thresholds stream km)1 Soils (LHS#1; RMP) Soil Aggregate Research >=4 30% Stability; Professional judgment <=30% 20% Bare Ground Healthy productive plant and animal Plant Cover >=50% communities (LHS#3; Species >=15 sp per 10% RMP) Richness Professional Judgment plot 10% Special status, Sagebrush Cover Research (see citations 10-25% * <20% of each Perennial Grass in Northwest CO >15% * habitat type can threatened and + Forb Cover Greater Sage Grouse deviate from endangered species 12 to 32 in * Sagebrush RMP Amendment and conditions (RMP; LHS#4; Sage Not Height EIS, Table 2.3, Page specific to that grouse plan quantitatively Predominant type * amendment) specified * Sagebrush >50% in Shape2 spreading Proximity of trees/other tall Trees/other structures to tall structures sage-grouse are none/ leks2 uncommon Proximity of within 1.86 mi sagebrush to of lek sage-grouse leks Protective sagebrush cover occurs within 328 feet of lek Riparian areas (LHS#2) Bank stability Professional judgement Minimal < 20% departure: > 80%; moderate departure: 60
Stream/river strata: Strahler stream order categories from the NHD+, medium resolution version 2.0 Table 1. Management objectives, example AIM indicators, and the methods to be used evaluating the attainment of management objectives. Assessing the attainment of management objectives requires a statement of the desired condition per indicator (i.e., condition threshold), as well as the amount or proportion of the resource that can deviate from a condition threshold before management actions are needed. Management objectives (summarized from above) Example indicators Condition determination method Condition thresholds Proportion of allowable departure (e.g., acres or stream km)1 Soils (LHS#1; RMP) Soil Aggregate Stability; Bare Ground Research Professional judgment >=4 <=30% 30% 20% Healthy productive plant and animal communities (LHS#3; RMP) Plant Cover Species Richness Professional Judgment >=50% >=15 sp per plot 10% 10% Special status, threatened and endangered species (RMP; LHS#4; Sage grouse plan amendment) Sagebrush Cover Perennial Grass + Forb Cover Sagebrush Height Predominant Sagebrush Shape2 Proximity of trees/other tall structures to sage-grouse leks2 Proximity of sagebrush to sage-grouse leks Research (see citations in Northwest CO Greater Sage Grouse RMP Amendment and EIS, Table 2.3, Page 10-25% * >15% * 12 to 32 in * Not quantitatively specified * >50% in spreading Trees/other tall structures are none/ uncommon within 1.86 mi of lek Protective sagebrush cover occurs within 328 feet of lek <20% of each habitat type can deviate from conditions specific to that type * Riparian areas (LHS#2) Bank stability Professional judgement Minimal departure: > 80%; moderate departure: 60 < 20%