Table 3.
Beta diversity (β sor) and its nestedness (β nes) and turnover component (β sim) calculated between every pair of adjacent regions from upriver to down river
| Adjacent pairs | β sor | β nes | β sim | β sim/β sor |
|---|---|---|---|---|
| 1 | .43 | .05 | .38 | .87 |
| 2 | .68 | .09 | .58 | .86 |
| 3 | .49 | .03 | .46 | .93 |
| 4 | .46 | .16 | .29 | .65 |
| 5 | .50 | .03 | .47 | .94 |
| 6 | .56 | .14 | .42 | .75 |
| 7 | .56 | .08 | .48 | .86 |
| 8 | .44 | .12 | .31 | .72 |
The ratios of turnover component to total beta diversity (β sim/β sor) showed that turnover component contributed a main proportion to total beta diversity.