MOESM2 of Detection of chemically induced ecotoxicological effects in rivers of the Nidda catchment (Hessen, Germany) and development of an ecotoxicological, Water Framework Directive–compliant assessment system

Additional file 2: Figure 6S2. Lumbriculus variegatus. Mean and standard deviation of the number of worms (a, c, e) and dry weight per replicate (b, d, f) after 28 days of exposure to combined water/sediment samples of the rivers Nidda (June 2016), Usa (January 2016) and Horloff (April 2016) under standardized laboratory conditions. n = 4.