1. Helmholtz Centre for Environmental Research-UFZ; Leipzig Germany
2. Eberhard Karls University Tübingen; Environmental Toxicology; Center for Applied Geosciences; Tübingen Germany
3. Australian Rivers Institute; School of Environment and Science; Griffith University; Southport Queensland Australia
4. Mid-Continent Ecology Division; National Health and Environmental Effects Research Laboratory; Office of Research and Development; US Environmental Protection Agency; Duluth Minnesota