Fig. 3
From: Mixture toxicity in the Erft River: assessment of ecological risks and toxicity drivers
Contribution of different substance groups to the SUM TU in early June 2016. Chronic SUM TUs of pesticides, pharmaceuticals and other substances along the Erft River during a rain event sampling in June 2016 are shown for algae (a, b), aquatic invertebrates (c, d), and fish (e, f) based on acute (a, c, e) and chronic (b, d, f) toxicity data. Red lines indicate risk thresholds of 0.001 and 0.1, respectively