Diversity measure | Duckweed type (n=20) | Waterweed type (n=17) | Mixed type (n=13) |
---|---|---|---|
α-diversity (number of species per ditch) | 6.65 (0.65)a | 8.53 (0.55)a,b | 9.46 (0.69)b |
β-diversity (γ/α-1) | 2.46 | 2.52 | 2.91 |
γ-diversity (total nr. of species in vegetation type) | 23 | 30 | 37 |
Dominance (1-Simpson’s index (D)) | 0.38 (0.04)a | 0.52 (0.05)b | 0.36 (0.04)a |
Number of red list species | 0 | 1 | 5 |
Number of ditches containing red list species | 0 | 1 | 5 |