Johnson, Richard
- Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
The EU Water Framework Directive (WFD) requires river assessment systems based on benthic invertebrates. The AQEM project is developing, at a European scale, such a methodology, based on a comparison of communities of reference streams and degraded streams. The project is focussing on three main impact types: morphological degradation, organic pollution and acidification. This paper presents the outline of the AQEM project with special emphasis on: - an overview of assessment systems with benthic invertebrates presently applied in Europe - an overview of stream typology approaches in Europe - the selection process of the stream types investigated in AQEM - the criteria used to select reference sites - the design of the sampling programme - the microhabitat-based sampling method applied in AQEM - the links and possibilities of integration between AQEM and existing assessment systems.
stream assessment; stream typology; reference conditions; multi-habitat sampling; Water Framework Directive
International Review of Hydrobiology
2003, volym: 88, nummer: 45720, sidor: 345-361
Utgivare: WILEY-V C H VERLAG GMBH
Miljö- och naturvårdsvetenskap
https://res.slu.se/id/publ/306