title: Testing the extended biotic index in Slovakia: consistency, advantages, and limitations versus the saprobic assessment method of water quality.
abstract: The European Union Water Framework Directive requires the achievement of environmental objectives for the ecological quality of water bodies. A comparable implementation of the Directive throughout member countries of the European Union is necessary to verify equal protection of surface waters. The Directive specifies that member states determine ecological quality by means of biological indices. To improve comparability of water quality assessment, this research carried out an intercalibration trial between the Slovak Saprobic Index and the Italian protocol of the Extended Biotic Index, as part of a cooperative program between Italy and the Slovak Republic. When assessing streams with no or low pollution, statistics showed similar results for both methods. In contrast, the comparison of indices was not accurate in the case of severely affected waters. Reliable conversion formulas are feasible to transform the Italian Extended Biotic Index into the Slovak Saprobic Index, and not vice versa.
authors.affiliation: Experimental Institute for Plant Nutrition (CRA-ISNP), Rome, Italy. brunopennelli@yahoo.it
authors.forename: Bruno
authors.initials: B
authors.lastname: Pennelli
authors.forename: Karl-Otto
authors.initials: KO
authors.lastname: Nagel
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Crivellaro
authors.forename: Claudio
authors.initials: C
authors.lastname: Fabiani
authors.forename: Alexandra
authors.initials: A
authors.lastname: Vancova
authors.forename: Laura
authors.initials: L
authors.lastname: Mancini
mesh_terms: D000818:Animals; D002138:Calibration; D004784:Environmental Monitoring / Q000592:standards*; D005618:Fresh Water / Q000032:analysis*; D018154:Slovakia; D014881:Water Supply / Q000592:standards