Journal
ECOLOGICAL APPLICATIONS
Volume 25, Issue 6, Pages 1518-1533Publisher
WILEY
DOI: 10.1890/14-0996.1
Keywords
Aquila chrysaetos; Bald and Golden Eagle Protection Act; compensatory mitigation; decisions in response to uncertainty; expert opinion; incidental take; lead abatement; lead poisoning; modeling with uncertainty; simulation model
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Funding
- National Renewable Energy Laboratory
- U.S. Department of Energy
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Challenges arise when renewable energy development triggers no net loss policies for protected species, such as where wind energy facilities affect Golden Eagles in the western United States. When established mitigation approaches are insufficient to fully avoid or offset losses, conservation goals may still be achievable through experimental implementation of unproven mitigation methods provided they are analyzed within a framework that deals transparently and rigorously with uncertainty. We developed an approach to quantify and analyze compensatory mitigation that (1) relies on expert opinion elicited in a thoughtful and structured process to design the analysis (models) and supplement available data, (2) builds computational models as hypotheses about cause-effect relationships, (3) represents scientific uncertainty in stochastic model simulations, (4) provides probabilistic predictions of relative mortality with and without mitigation, (5) presents results in clear formats useful to applying risk management preferences (regulatory standards) and selecting strategies and levels of mitigation for immediate action, and (6) defines predictive parameters in units that could be monitored effectively, to support experimental adaptive management and reduction in uncertainty. We illustrate the approach with a case study characterized by high uncertainty about underlying biological processes and high conservation interest: estimating the quantitative effects of voluntary strategies to abate lead poisoning in Golden Eagles in Wyoming due to ingestion of spent game hunting ammunition.
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