Before his retirement, Prof. em. Dr. Dr. h.c. Donat-P. Häder has been Director of the Botanical Institute and held the chair of Ecophysiology of Plants at the Friedrich-Alexander University, Erlangen-Nürnberg, Germany. He was also the director of the Botanical Garden. Prof. Häder is the author of over 670 scientific publications, produced 27 books, and holds seven national and international patents. He is or has been Editor of several international journals and is currently Section Editor of Environmental Toxicology in Frontiers in Environmental Sciences. His research interests are ecophysiology and ecotoxicology of aquatic ecosystems and he is appointed member of the Environmental Effects Panel of the United Nations on the Effects of ozone depletion and climate change.