Hello, welcome to our research website

The ‘Food Web Ecology Lab’ is a research group at the University of Helsinki based at Tvärminne Zoological Station on the southern coast of Finland. We study how biodiversity and species interactions shape ecosystem functioning, stability, and resilience in aquatic ecosystems, with a particular focus on the ecological network structure and dynamics of food webs.

Our research combines empirical and theoretical approaches, integrating field surveys, mesocosm experiments, ecological network analysis, DNA metabarcoding, and ecosystem carbon-flow modelling. By combining these complementary approaches, we investigate how global change, in particular warming, alters species interactions, reorganises food webs, and affects ecosystem processes across multiple spatial and temporal scales.

Much of our current research focuses on Baltic Sea coastal ecosystems, where habitat-forming species such as bladderwrack, seagrasses, and blue mussels play a central role in maintaining biodiversity and ecosystem functioning. However, we also work across a broader range of marine ecosystems, including the North Sea, Barents Sea, Atlantic Ocean, and Southern Ocean, enabling us to investigate large-scale ecological patterns and address fundamental questions about how ecosystems vary across space and time.

The group is led by Susanne Kortsch, Academy Research Fellow at the University of Helsinki.