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A comprehensive approach for assessing actions affecting migratory birds is crucial for reducing negative impacts. This strategy involves deconstructing the proposed action into its components, identifying which bird species and resources will face stressors, and understanding their responses. The goal is to determine exposure levels and link cause-and-effect relationships between project activities and bird demographics. Benefits include raising awareness of the impacts, providing a transparent process, and optimizing conservation measures, ultimately contributing to better allocation of resources and enhanced bird conservation.
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Deconstructing Your Action A Strategy for Analyzing Impacts on Bird Populations
Effects Analysis A thorough analysis of an action’s impacts on the species and its resources is an essential component of the coordination process to reduce impacts to migratory birds ?
Analyzing Effects Deconstruct the Action • Break the proposed action into its separate components Exposure • Identify which birds and resources will be affected by produced stressors Response • Understand the consequences to birds from stressor exposure
Goal and Objective Goal: Determine whether a species and/or its resources will be exposed to stressors produced by project activities Objective: Link cause and effect relationships between an activity and bird demography
BENEFITS • Raise awareness to how actions affect birds • Provide transparent and logical step-wise process • Identify appropriate conservation measures • Optimizes the allocation of staff and funding
Deconstructing the Action • Identify PROJECT TYPE • Identify ALL ACTIVITIES associated with the Project • Identify STRESSORS produced by ALL activities
Understanding Exposure Bird Conservation Needs • All species have three main conservation needs • Breeding • Sheltering • Feeding • Specific resources are required to meet these conservation needs
Resources • Appropriate Vegetation Structure • Nest sites • Food • Shelter from weather • Access to food for adults and young • “Healthy Space” (natural balance) • Predators • Parasites • Competitors • Disease • Other Disturbances
Understanding Response How do birds and/or their resources respond when exposed to a stressor? • Consider all life stages • Are there reported responses • scientific and commercial information • If no information, use the precautionary principle to determine the most likely response
Increasing Severity Behavioral Sub-Lethal Lethal Alarm Startle Avoidance Abandonment Displacement Death No Response Increased respiration <10% probability of death Altered behavioral displays Reduced Feeding Success Reduced Growth Rates Reduced Fecundity Reproductive Failure 10-20% probability of death 20-40% probability of death 40-60% probability of death Delayed Age at Sexual Maturity Depressed autoimmune responses Response Continuum
THREAT EFFECTS IMPACTS FOCUS ON THE IMPACTS
IMPACTS Displacement Reduced Pairing Success Reduced Productivity Local Population Declines EFFECTS