An exposure-effect approach for evaluating ecosystem-wide risks from human activities

A.M. Knights*, G.J. Piet, R.H. Jongbloed, J.E. Tamis, L.A. Robinson

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

51 Citations (Scopus)


Ecosystem-based management (EBM) is promoted as the solution for sustainable use. An ecosystem-wide assessment methodology is therefore required. In this paper, we present an approach to assess the risk to ecosystem components from human activities common to marine and coastal ecosystems. We build on: (i) a linkage framework that describes how human activities can impact the ecosystem through pressures, and (ii) a qualitative expert judgement assessment of impact chains describing the exposure and sensitivity of ecological components to those activities. Using case study examples applied at European regional sea scale, we evaluate the risk of an adverse ecological impact from current human activities to a suite of ecological components and, once impacted, the time required for recovery to pre-impact conditions should those activities subside. Grouping impact chains by sectors, pressure type, or ecological components enabled impact risks and recovery times to be identified, supporting resource managers in their efforts to prioritize threats for management, identify most at-risk components, and generate time frames for ecosystem recovery.
Original languageEnglish
Pages (from-to)1105-1115
JournalICES Journal of Marine Science
Issue number3
Publication statusPublished - 2015


  • baltic sea
  • fisheries management
  • environmental-change
  • coastal ecosystems
  • marine ecosystems
  • human impact
  • new-zealand
  • food webs
  • support
  • climate


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