Resilience in ecotoxicology: Toward a multiple equilibrium concept

Environmental Toxicology and Chemistry
By: , and 

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Abstract

The term resilience describes stress–response patterns across scientific disciplines. In ecology, advances have been made to clearly define resilience based on underlying mechanistic assumptions. Engineering resilience (rebound) is used to describe the ability of organisms to recover from adverse conditions (disturbances), which is termed the rate of recovery. By contrast, the ecological resilience definition considers a systemic change, that is, when ecosystems reorganize into a new regime following disturbance. Under this new regime, structural and functional aspects change considerably relative to the previous regime, without recovery. In this context, resilience is an emergent property of complex systems. In the present study, we argue that both definitions and uses are appropriate in ecotoxicology, and although the differences are subtle, the implications and uses are profoundly different. We discuss resilience concepts in ecotoxicology, where the prevailing view of resilience is engineering resilience from chemical stress. Ecological resilience may also be useful for describing systemic ecological changes because of chemical stress. We present quantitative methods that allow ecotoxicologists and risk managers to assess whether an ecosystem faces an impending regime shift or whether it has already undergone such a shift. We contend that engineering and ecological resilience help to distinguish ecotoxicological responses to chemical stressors mechanistically and thus have implications for theory, policy, and application.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Resilience in ecotoxicology: Toward a multiple equilibrium concept
Series title Environmental Toxicology and Chemistry
DOI 10.1002/etc.3845
Volume 36
Issue 10
Year Published 2017
Language English
Publisher Society of Environmental Toxicology and Chemistry
Contributing office(s) Coop Res Unit Seattle
Description 7 p.
First page 2574
Last page 2580