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Environmental Sciences Europe
Fig. 1 | Environmental Sciences Europe

Fig. 1

From: Multiple stressor effects of insecticide exposure and increased fine sediment deposition on the gene expression profiles of two freshwater invertebrate species

Fig. 1

Overview of the field experiment. A Stream water was pumped into header tanks and supplied to 64 mesocosms. The macroinvertebrate communities living in the mesocosms were exposed to the stressors in a 4 × 2 factorial design (4 pesticide levels, 2 fine sediment levels) with 8 replicates per treatment. B Time course of the experiment. A 21-day colonization period was followed by a 21-day stressor period. For this study, specimens were sampled after the insecticide pulse (day 4, red square). C Stream water entered the mesocosms via the inflow, flowed in a clockwise orientation, and left the system through the central circular opening. The sieve in the outflow allowed sampling of drifting organisms to estimate stressor effects for the macroinvertebrate community

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