When environmentally persistent pathogens transform good habitat into ecological traps

Royal Society Open Science
By: , and 

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Abstract

Habitat quality plays an important role in the dynamics and stability of wildlife metapopulations. However, the benefits of high-quality habitat may be modulated by the presence of an environmentally persistent pathogen. In some cases, the presence of environmental pathogen reservoirs on high-quality habitat may lead to the creation of ecological traps, wherein host individuals preferentially colonize high-quality habitat, but are then exposed to increased infection risk and disease-induced mortality. We explored this possibility through the development of a stochastic patch occupancy model, where we varied the pathogen’s virulence, transmission rate and environmental persistence as well as the distribution of habitat quality in the host metapopulation. This model suggests that for pathogens with intermediate levels of spread, high-quality habitat can serve as an ecological trap, and can be detrimental to host persistence relative to low-quality habitat. This inversion of the relative roles of high- and low-quality habitat highlights the importance of considering the interaction between spatial structure and pathogen transmission when managing wildlife populations exposed to an environmentally persistent pathogen.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title When environmentally persistent pathogens transform good habitat into ecological traps
Series title Royal Society Open Science
DOI 10.1098/rsos.160051
Volume 3
Year Published 2016
Language English
Publisher Royal Society Publishing
Publisher location London
Contributing office(s) Northern Rocky Mountain Science Center
Description 11 p.
First page Article 160051
Online Only (Y/N) Y
Additional Online Files (Y/N) N