Step 2. Identify Effects
In step 1, you identified the presence of species and critical habitat in the . In this step, you will determine whether your project may affect a listed species or critical habitat and whether consultation is required.
2.A. Impact overview
To describe the action and its effects, break the project into parts to identify any physical, chemical, or biological changes (stressors) that could impact species or critical habitat. Then, assess whether listed species—at any life stage—could be exposed to those stressors, even if not present during implementation. Finally, evaluate how the species or habitat might respond to that exposure.
2.B. Effect determinations
Consider the presence, stressors, exposure, and response of species and critical habitat identified above. Using this information, determine if the project actions may affect each listed species or critical habitat in the action area based on the categories listed below.
For threatened and endangered species and critical habitat:
The Federal action agency must determine effects on listed species and designated critical habitat within the project area. Each species on the official list must be assigned one of three determinations: "No effect", "May affect, not likely to adversely affect", or "May affect, likely to adversely affect" (see Table 2).
- "No effect" applies when the species is absent or no stressors are present.
- "May affect, not likely to adversely affect" applies when impacts are possible but not adverse, especially if conservation measures (see Nebraska Conservation Measures Document) reduce effects to discountable, insignificant, or wholly beneficial.
- "May affect, likely to adversely affect" applies when adverse effects are likely and requires formal consultation with the Service.
Note: For some species or projects, Determination Keys (DKeys) may be available in to help reach an effect determination and conclude consultation.
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