Option Value of Apex Predators: Evidence from a River Discontinuity
Working Paper 34377
DOI 10.3386/w34377
Issue Date
"Option value" provides theoretical justification for conserving wildlife species lacking known value, but empirical assessments of actual realizations are rare. We examine quasi-option value in the context of gray wolf eradication, which aimed to protect humans and their property historically, but also reduced the potential for wolves to improve human well-being today. We estimate the effects of long-run differences in the presence of wolves north, but not south, of Canada’s Saint Lawrence River on animal-related (primarily deer) vehicle collisions. Wolves reduce the share of animal collisions by 38 percent, reducing risk to human life and property.
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Copy CitationEyal G. Frank, Anouch Missirian, Dominic P. Parker, and Jennifer L. Raynor, "Option Value of Apex Predators: Evidence from a River Discontinuity," NBER Working Paper 34377 (2025), https://doi.org/10.3386/w34377.
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