[en] The objectives of this study were to describe the distribution of macrophyte assemblages in relation to physico‐chemical parameters of their environment and to assess the variability in ecological metrics throughout the Walloon river network. Two-way clustering allowed us to simultaneously assign sample units and species to groups by performing two separate cluster analyses. Indicator species analysis allowed us to assess the degree to which a species indicated a group, based on its constancy and
distribution of abundance. Hygroamblystegium fluviatile, Chiloscyphus polyanthos and Lemanea
fluviatilis were found to characterize acidic and low impacted streams and rivers (G1), while
Ranunculus fluitans was found in all low impacted large streams (G2). Potamogeton pectinatus,
proved to be more common in eutrophicated waters in the calcareous areas particularly in the ʺLoess low plateauxʺ region (G6). Cinclidotus riparius, Fissidens crassipes and Pellia endiviifolia, appeared in rivers situated in the Condroz region (G4), which was characterized by a high concentration of nitrogen.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Sossey Alaoui, Khadija ; Université de Liège - ULiège > DER Sc. et gest. de l'environnement (Arlon Campus Environ.) > Eau, Environnement, Développement
Rosillon, Francis ; Université de Liège - ULiège > DER Sc. et gest. de l'environnement (Arlon Campus Environ.) > Eau, Environnement, Développement
Language :
English
Title :
Distribution Pattern of Macrophytic Community and Water Quality Indicators in Walloon Rivers
Publication date :
31 August 2020
Main work title :
International Research in Environment, Geography and Earth Science Vol. 4