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Fig. 1. Mean survival of three insect species exposed to a range of salinities. The
mayflies Cloeon and Centroptilum were exposed for a period
of 21 days, while Chironomus midges were exposed for their entire
larval period. #1 refers to the first Centroptilum experiment (using
wet lab water) and #2 refers to the second Centroptilum experiment
(using river water).