The research group conducts research on the impact of human activity on ecological processes and the state of terrestrial ecosystems. The research includes studies on a number of influencing factors, such as climate change, use of nutrients, biotic invasions and xenobiotic substances. Moreover, studies on land use impact on habitat types and specific species are essential to the group. The research group focus on species, population, community and ecosystem level, and combines laboratory, experiment, field and modelling in its approach.