1. Department of Chemical Ecology and Ecotoxicology, University of Lund, SE-223 62 Lund, Sweden
2. Wisconsin Department of Natural Resources and Center for Limnology, University of Wisconsin-Madison, Trout Lake Station, Boulder Junction, Wisconsin 54512
3. Eman Catchment Management Association, Box 237, SE-574 23 Vetlanda, Sweden
4. Hultsfreds Municipality, Environmental and Health Office, Box 500, SE-574 21, Sweden
5. Kalmar County Administration, Environmental Unit, SE-391 86 Kalmar, Sweden