Socioeconomic Benefits of Large Carnivore Recolonization Through Reduced Wildlife-Vehicle Collisions

Sophie L. Gilbert, Kelly J. Sivy, Casey B. Pozzanghera, Adam DuBour, Kelly Overduijn, Matthew M. Smith, Jiake Zhou, Joseph M. Little, Laura R. Prugh

Research output: Contribution to journalLetterpeer-review

38 Scopus citations

Abstract

The decline of top carnivores has released large herbivore populations around the world, incurring socioeconomic costs such as increased animal–vehicle collisions. Attempts to control overabundant deer in the Eastern United States have largely failed, and deer–vehicle collisions (DVCs) continue to rise at alarming rates. We present the first valuation of an ecosystem service provided by large carnivore recolonization, using DVC reduction by cougars as a case study. Our coupled deer population models and socioeconomic valuations revealed that cougars could reduce deer densities and DVCs by 22% in the Eastern United States, preventing 21,400 human injuries, 155 fatalities, and $2.13 billion in avoided costs within 30 years of establishment. Recently established cougars in South Dakota prevent $1.1 million in collision costs annually. Large carnivore restoration could provide valuable ecosystem services through such socio-ecological cascades, and these benefits could offset the societal costs of coexistence.

Original languageEnglish (US)
Pages (from-to)430-438
Number of pages9
JournalConservation Letters
Volume10
Issue number4
DOIs
StatePublished - Jul 1 2017
Externally publishedYes

Keywords

  • Carnivore
  • ecosystem services
  • predator-prey
  • trophic cascade

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Nature and Landscape Conservation

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