taxonomie (1) espèce (1) limon (1) sable (1) fleuve (1) recherche (1) karst (1) habitat (1) aliment (1) filtre (1) écologie (1) distribution (1) substance chimique (1) abri (1) Ecology (1) Food (1) Selection (1) Animal feeding (1) Species diversity (1) Water (1) Springs (1) Speed (1) Species (1) Silt (1) Sand (1) Rivers (1) Risers (Founding) (1) Research (1) Ordination (1) Niche (Ecology) (1)