TEASIng apart alien species risk assessments: A framework for best practices

Brian Leung, Nuria Roura-Pascual, Sven Bacher, Jaakko Heikkilä, Lluis Brotons, Mark A. Burgman, Katharina Dehnen-Schmutz, Franz Essl, Philip E. Hulme, David M. Richardson, Daniel Sol, Montserrat Vilà

Research output: Contribution to journalReview article

156 Citations (Scopus)

Abstract

Some alien species cause substantial impacts, yet most are innocuous. Given limited resources, forecasting risks from alien species will help prioritise management. Given that risk assessment (RA) approaches vary widely, a synthesis is timely to highlight best practices. We reviewed quantitative and scoring RAs, integrating > 300 publications into arguably the most rigorous quantitative RA framework currently existing, and mapping each study onto our framework, which combines Transport, Establishment, Abundance, Spread and Impact (TEASI). Quantitative models generally measured single risk components (78% of studies), often focusing on Establishment alone (79%). Although dominant in academia, quantitative RAs are underused in policy, and should be made more accessible. Accommodating heterogeneous limited data, combining across risk components, and developing generalised RAs across species, space and time without requiring new models for each species may increase attractiveness for policy applications. Comparatively, scoring approaches covered more risk components (50% examined > 3 components), with Impact being the most common component (87%), and have been widely applied in policy (> 57%), but primarily employed expert opinion. Our framework provides guidance for questions asked, combining scores and other improvements. Our risk framework need not be completely parameterised to be informative, but instead identifies opportunities for improvement in alien species RA.

Original languageEnglish
Pages (from-to)1475-1493
Number of pages19
JournalEcology Letters
Volume15
Issue number12
DOIs
Publication statusPublished - Dec 2012

Fingerprint

introduced species
risk assessment
risk assessment process
quantitative risk assessment
expert opinion
space and time
synthesis
resource
policy

Keywords

  • Colonisation
  • Exotic
  • Habitat suitability
  • Life history trait
  • Non-indigenous
  • Policy
  • Propagule pressure
  • Risk analysis
  • Species distribution
  • Uncertainty

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Leung, B., Roura-Pascual, N., Bacher, S., Heikkilä, J., Brotons, L., Burgman, M. A., ... Vilà, M. (2012). TEASIng apart alien species risk assessments: A framework for best practices. Ecology Letters, 15(12), 1475-1493. https://doi.org/10.1111/ele.12003

TEASIng apart alien species risk assessments : A framework for best practices. / Leung, Brian; Roura-Pascual, Nuria; Bacher, Sven; Heikkilä, Jaakko; Brotons, Lluis; Burgman, Mark A.; Dehnen-Schmutz, Katharina; Essl, Franz; Hulme, Philip E.; Richardson, David M.; Sol, Daniel; Vilà, Montserrat.

In: Ecology Letters, Vol. 15, No. 12, 12.2012, p. 1475-1493.

Research output: Contribution to journalReview article

Leung, B, Roura-Pascual, N, Bacher, S, Heikkilä, J, Brotons, L, Burgman, MA, Dehnen-Schmutz, K, Essl, F, Hulme, PE, Richardson, DM, Sol, D & Vilà, M 2012, 'TEASIng apart alien species risk assessments: A framework for best practices' Ecology Letters, vol. 15, no. 12, pp. 1475-1493. https://doi.org/10.1111/ele.12003
Leung B, Roura-Pascual N, Bacher S, Heikkilä J, Brotons L, Burgman MA et al. TEASIng apart alien species risk assessments: A framework for best practices. Ecology Letters. 2012 Dec;15(12):1475-1493. https://doi.org/10.1111/ele.12003
Leung, Brian ; Roura-Pascual, Nuria ; Bacher, Sven ; Heikkilä, Jaakko ; Brotons, Lluis ; Burgman, Mark A. ; Dehnen-Schmutz, Katharina ; Essl, Franz ; Hulme, Philip E. ; Richardson, David M. ; Sol, Daniel ; Vilà, Montserrat. / TEASIng apart alien species risk assessments : A framework for best practices. In: Ecology Letters. 2012 ; Vol. 15, No. 12. pp. 1475-1493.
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