Figures & data
Figure 1. Location of the Xiangxi River watershed in China and the distribution of sampling sites.
Figure 2. NMS ordination of the physical condition (a) and chemical condition (b) at 12 sites over three years. Ordination stress, final instability, and number of iterations were (respectively): (a) 15.23, 0.00162, 43; (b) 16.82, 0.00461, 39. Legends in the figure are in the format: year (last 2 digits only)-site.
Figure 3. NMS ordination of macroinvertebrate relative abundance (a) and presence/absence (b) at 12 sites over three years. Ordination stress, final instability, and number of iterations were (respectively): (a) 18.54, 0.00332, 28; (b) 15.46, 0.00401, 37. Legends in the figure are in the format: year (last 2 digits only)-site.
Table 1. Means (standard deviation) of macroinvertebrate community diversity at different sites on the Xiangxi River during 2002–2006.
Figure 4. Relationship between the inter-annual change in a community composition (relative abundance and presence/absence data) and changes in both water quality and physical condition. p values are given. Refer to individual F-tests for the significance of the slope of best-fit line.
