Organisation and staff

Oona Lönnstedt

Assistant Professor at Department of Ecology and Genetics, Limnology

Visiting address:
Evolutionsbiologiskt centrum (EBC)
Norbyv. 18 D
75236 Uppsala
Postal address:
Norbyv. 18 D
75236 Uppsala

Short presentation

I have a very broad range of interests within the field of fish ecology. My major research explores effects of anthropogenic pressures on biological communities, with a particular focus on how humans alter predator-prey interactions in marine and aquatic environments. To this end, I investigate how a wide range of impacts including climate change, habitat degradation, invasive species, and other human activities influences behavior and survival of fish.

Also available at

My courses


I use field collections, observations and experiments in conjunction with carefully controlled laboratory experiments to address research questions and have made unique contributions to our understanding of how human induced rapid environmental change (HIREC) will affect fish communities. I have been involved in several long-term monitoring projects, examined habitat degradation effects on threatened species, been a key contributor to cutting-edge research into effects of ocean acidification on fish, provided important information on the cognitive abilities of fish, and examined how environmental change influences feeding patterns of sharks and other apex predators on the Great Barrier Reef.

My current research program focuses on how fish in the Baltic Sea are affected by human activities along the coastline. Larger predators such as pike and perch have seen marked declines in abundance and diversity during the past two decades. The reasons for these declines are diverse and varied, but research has documented a widespread recruitment deficit in fish using shallow coastal areas as spawning habitats. Currently, there are major deficiencies in our understanding of local recruitment dynamics in the shallow coastal ecosystems of Sweden. By examining how underlying processes such as predation, competition and habitat characteristics affect recruit behavior and survival patterns my research will directly address current knowledge gaps.


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