La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Towards a multimetric index for ecological assessment of Mediterranean flatland ponds: the use of macroinvertebrates as bioindicators
Auteurs :	Cristina Trigal, Auteur ; Francisco Garcia-Criado, Auteur ; Camino Fernandez-Alaez, Auteur
Type de document :	Article
Dans :	Hydrobiologia (618 FEB 2009)
Article en page(s) :	109-123
Résumé :	Fifty-five macroinvertebrate metrics were tested for their response to pond condition in 41 ponds of northwest Spain to develop a preliminary multimetric index for ecological assessment of Mediterranean flatland ponds. Stressor specific response of individual attributes to eutrophication and habitat alteration was also investigated to identify differences in the responses of metrics to single stressors and elucidate how this might affect the performance of the final index. Several combinations were tested using discrimination efficiency (25th percentile of slightly impaired sites for metrics decreasing with perturbation and 75th percentile of slightly impaired sites for metrics increasing with perturbation) and Mann-Whitney U-test with Bonferroni adjustment (P

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...