Walters D., Kotze D.C., Rebelo A., Pretorius L., Job N., Lagesse J.V., Riddell E., Cowden C. (2021). Validation of a rapid wetland ecosystem services assessment technique using the Delphi method. Ecological Indicators, 01/06/2021, vol. 125, p. 1-10.
https://doi.org/10.1016/j.ecolind.2021.107511
https://doi.org/10.1016/j.ecolind.2021.107511
Titre : | Validation of a rapid wetland ecosystem services assessment technique using the Delphi method (2021) |
Auteurs : | D. Walters ; D.C. Kotze ; A. Rebelo ; L. Pretorius ; N. Job ; J.V. Lagesse ; E. Riddell ; C. Cowden |
Type de document : | Article |
Dans : | Ecological Indicators (vol. 125, June 2021) |
Article en page(s) : | p. 1-10 |
Langues : | Anglais |
Langues du résumé : | Anglais |
Catégories : |
Catégories principales 07 - ENVIRONNEMENT ; 7.4 - Ressources Naturelles : Paysage, Biodiversité, Patrimoine naturelThésaurus IAMM SERVICE ECOSYSTEMIQUE ; EVALUATION ; ZONE HUMIDE ; METHODE DELPHI |
Résumé : | Wetlands differ in their ability to provide ecosystem services, and thus there is a need to assess ecosystem service delivery in order to prioritize protection and restoration efforts. We used a Delphi-based expert-panel method to validate an ecosystem services assessment technique in a context where there is a paucity of field-level process-based research into the delivery of ecosystem services. The validation process entailed comparing scores from a panel of wetland experts to that derived by WET-EcoServices. Three wetlands were selected where detailed information relating to the supply of regulating services was available. At each site a selection of regulating services was assessed and then scored using the technique and independently by the panel of experts. The expert panel reached high levels of consensus (83%) on the scores for the three case studies used in the validation process. The consensus formed a useful basis for the validation of the technique. Statistical testing revealed no significant differences between expert and technique scores however, when considered practically, there were small differences in 53% of the scores, moderate differences in 23% and large in 20%. In most cases the technique over scored relative to the expert assessment. The results were useful for identifying specific refinements to the technique. The study demonstrates how a three-way ?engagement? of a rapid-assessment technique, expert opinion and detailed research can be used to improve ecosystem services assessments in resource-limited situations. We reflected on the use of the Delphi method in a resource-constrained environment and advocate its careful application in similar contexts. |
Cote : | Réservé lecteur CIHEAM |
URL / DOI : | https://doi.org/10.1016/j.ecolind.2021.107511 |