Fig. 3.

Relative species abundance (as a percentage of the total community) of (a) the amphipods, Paracalliope fluviatilis and Paracorophium excavatum, and (b) the isopods, Austridotea annectens and A. lacustris, in both low and high exposure treatments over the 9-week trial period, with replicates sampled every 3 weeks. Sample size of six mesocosm replicates per treatment in each sampling period. Regression lines represent the direction of relationships (best-fit lines) but not statistical relationship.