skip to main content
IfAÖ researchers sorting at boat
IfAÖ researchers sorting at boat


Inventory and assessment of fish communities in the North and Baltic Sea

Our aim is to identify the structure of fish communities in relation to biotic (food web) and abiotic factors (habitat quality). The “status quo” based on this information provides the benchmark for evaluating and predicting human-caused influences on fish communities.

Description of seasonal and interannual changes of species composition depending on environmental variables, and anthropogenic perturbation, including fishing activity

The composition of fish communities changes dynamically. Being able to distinguish between naturally occurring changes (due to seasonal variation in reproduction, mortality, migration) and anthropogenically induced changes (due to habitat destruction, climate change, pollution) is central to our work.

Studies of fish communities

The Institute of Applied Ecosystem Research is involved in national and international research projects that concentrate on population dynamics (reproduction, recruitment), dietary patterns (food availability and acquisition), as well as the pollution impact and potential adverse effects of cooling water from power plants.

Description and evaluation of fisheries in the North and Baltic Sea

Especially the fishing industry's demands on commercial fish species, including recent significant bycatch by fisheries of insignificant species constitute the most intensive intervention on fish communities and their stocks. Therefore, a scientific focus by the Department of Ichthyology is the description and evaluation of fishing in certain sea areas, especially in the context of multiple use marine areas (offshore wind farms, cable routes, military exercise areas, gravel mining, protected areas and maritime traffic routes).