Environmental Informatics is a fast growing field which deals with all methods from computer science, environmental planning, ecology and related subjects. As well as being an interdisciplinary area, Environmental Informatics provides an interface between all involved professional groups. Monitoring the state of the environment, analysing existing data, presenting the data to scientists and the public, as well as providing decision support are only some of the topics involved. Environmental Informatics is therefore a good foundation for the computer-assisted protection of the environment.