Identifying species conservation strategies to reduce disease-associated declines

Conservation Letters
By: , and 

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Abstract

Emerging infectious diseases (EIDs) are a salient threat to many animal taxa, causing local and global extinctions, altering communities and ecosystem function. The EID chytridiomycosis is a prominent driver of amphibian declines, which is caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd). To guide conservation policy, we developed a predictive decision-analytic model that combines empirical knowledge of host-pathogen metapopulation dynamics with expert judgment regarding effects of management actions, to select from potential conservation strategies. We apply our approach to a boreal toad (Anaxyrus boreas boreas) and Bd system, identifying optimal strategies that balance tradeoffs in maximizing toad population persistence and landscape-level distribution, while considering costs. The most robust strategy is expected to reduce the decline of toad breeding sites from 53% to 21% over 50 years. Our findings are incorporated into management policy to guide conservation planning. Our online modeling application provides a template for managers of other systems challenged by EIDs.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Identifying species conservation strategies to reduce disease-associated declines
Series title Conservation Letters
DOI 10.1111/conl.12393
Volume 11
Issue 2
Year Published 2018
Language English
Publisher Society for Conservation Biology
Contributing office(s) Coop Res Unit Seattle
Description e12393; 10 p.
First page 1
Last page 10