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Contribution to the Macrophytic Typology of Belgian Reference Watercourses


Affiliations
1 Departement del Etude du Milieu Naturel et Agricole (DEMNA), Direction Generale del Agriculture, des Ressources Naturelles et del Environnement, Service Public deWallonie, avenue Marchal Juin 23, 5030 Gembloux, Belgium
2 Departement des Sciences et Gestion del Environnement, Universite de Liege, avenue de Longwy 185, 6700 Arlon, Belgium
 

The objective of the study is to create a typology of macrophytes for the reference watercourses of the Meuse River catchment basin in Wallonia as a step towards the implementation of the European Water Framework Directive.The 50 sites studied are the object of a physicochemical and environmental characterization followed by a floristic survey (phanerogams, mosses, liverworts, and macroalgae). Six clusters of watercourses with their characteristic species are highlighted by two-way clustering and indicator species. The abundance of phanerogams in some watercourses of the Arden region is not only linked to light intensity but also depends on the degree of slope and the nature of the geological substrate.
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  • Contribution to the Macrophytic Typology of Belgian Reference Watercourses

Abstract Views: 201  |  PDF Views: 93

Authors

Daniel Galoux
Departement del Etude du Milieu Naturel et Agricole (DEMNA), Direction Generale del Agriculture, des Ressources Naturelles et del Environnement, Service Public deWallonie, avenue Marchal Juin 23, 5030 Gembloux, Belgium
Frederic Cherot
Departement del Etude du Milieu Naturel et Agricole (DEMNA), Direction Generale del Agriculture, des Ressources Naturelles et del Environnement, Service Public deWallonie, avenue Marchal Juin 23, 5030 Gembloux, Belgium
Francis Rosillon
Departement des Sciences et Gestion del Environnement, Universite de Liege, avenue de Longwy 185, 6700 Arlon, Belgium
Khadija Sossey-Alaoui
Departement des Sciences et Gestion del Environnement, Universite de Liege, avenue de Longwy 185, 6700 Arlon, Belgium

Abstract


The objective of the study is to create a typology of macrophytes for the reference watercourses of the Meuse River catchment basin in Wallonia as a step towards the implementation of the European Water Framework Directive.The 50 sites studied are the object of a physicochemical and environmental characterization followed by a floristic survey (phanerogams, mosses, liverworts, and macroalgae). Six clusters of watercourses with their characteristic species are highlighted by two-way clustering and indicator species. The abundance of phanerogams in some watercourses of the Arden region is not only linked to light intensity but also depends on the degree of slope and the nature of the geological substrate.