Tvärminne Zoological Station (TZS) has an over a century long history of scientific research, with emphasis on the brackish waters of the Gulf of Finland. The station was established in 1902 and thus provides good background data for studying long-term environmental change.

Marine research at TZS focuses on the biodiversity and functioning of the Baltic Sea ecosystem, and the effects of anthropogenic stressors, such as eutrophication and climate change. Major current research areas include benthic ecology, pelagic ecology and aquatic biogeochemistry. Evolutionary and population biology are also important topics, encompassing the social, sexual, and genetic structure of colony-forming insects, sexual selection and reproductive biology in fish and birds, and the dispersion and reproduction of insects and rock-pool organisms in fragmented landscapes (metapopulation biology).

Recently more multidisciplinary approaches have been developed at TZS, as the marine ecology and biogeochemistry researchers have joined forces with atmospheric researchers to form the Centre for Coastal Ecosystem and Climate Change Research (CoastClim). The aim is to investigate the links and feedbacks between coastal biodiversity and our climate. 

250-300 scientists work at TZS annually, conducting 5000-6000 working days, with ca 30 % international users. To get the latest information on new publications and exciting developments in ongoing research projects, please also follow us on FacebookInstagram and Twitter.