Table 2 Weighted intraset correlation between the axes and the environmental variables following RDA of chironomid abundance data from Nee Soon Swamp Forest

Eigen values

0.08

0.06

0.04

0.03

Accumulated % of the variance of species data explained

26

47

64

75

 Dissolved oxygen

−0.34

−0.68

−0.15

0.05

 Stream order

0.005

−0.76

0.37

−0.08

 Stream width

−0.19

−0.29

0.63

0.13

 Temperature

−0.43

0.45

−0.25

−0.23

 Conductivity

0.37

0.32

−0.21

−0.71

 Latitude [flow direction]

0.78

−0.06

0.39

−0.1

 Year

0.79

−0.23

−0.07

0.04