(Dept. 4) Biology and Ecology of Fishes

In the Department of Biology and Ecology of Fishes, we seek to understand the ecological and evolutionary processes that structure populations and communities of freshwater fishes and affect their functions. We use this knowledge to improve the management and conservation of wild fish populations. Our work focuses on interactions between natural and anthropogenic ecological factors and their effects on the dynamics of fish populations. The methodological approaches include hypothesis-driven laboratory research, mesocosm experimentation, lake manipulation, comparative field studies and theoretical modelling.

Contact persons

Jens Krause

Head of department
Working group
Mechanisms and functions of group-living

Department members

Selected publications

October 2020
Global Change Biology. - 26(2020)11, S. 6383-6398

The role of connectivity in the interplay between climate change and the spread of alien fish in a large Mediterranean river

Johannes Radinger; Emili García-Berthou

Dams exacerbate the consequences of climate change on river fish: A potential response of river fish to environmental changes is to colonise new habitats. Dams restrict the habitats of fish, but do not necessarily prevent the spread of invasive species, as Johannes Radinger and his team found.

October 2020
Science. - 370(2020)6513, S. 180

Pragmatic animal welfare is independent of feelings

Robert Arlinghaus; Ian G. Cowx; Brian Key; Ben K. Diggles; Alexander Schwab; Steven J. Cooke; Anne Berit Skiftesvik; Howard I. Browman

In this Letter to Science the researchers argue that effective application of animal welfare in conservation is also possible if it is based on objective and measurable parameters of animal welfare – without relying on concepts such as consciousness, sentience or pain. 

Platzhalter Cover
September 2020
Reviews in Fisheries Science & Aquaculture. - 28(2020)4, S. 518-535

Knowledge gaps and management priorities for recreational fisheries in the developing world

Shannon D. Bower; Øystein Aas; Robert Arlinghaus; T. Douglas Beard; Ian G. Cowx; Andy J. Danylchuk; Kátia M.F. Freire; Warren M. Potts; Stephen G. Sutton, and Steven J. Cooke

A survey with fisheries experts to gather information on recreational fisheries in developing countries shows that recreational fishing is socially important and is expected to grow in most countries. Recreational fisheries were described as mainly consumption oriented. Most often, tourists use marine waters, whereas resident recreational fishers use fresh waters. 

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