(Dept. 4) Fish Biology, Fisheries and Aquaculture

In the Department of Fish Biology, Fisheries and Aquaculture we seek to understand the ecological and evolutionary processes that structure populations and communities of freshwater fishes and affect their functions and ecological services. An important part of our work focuses on interactions between natural and anthropogenic factors and their effects on evolution, reproduction, stress, development, growth, behaviour, productivity and recreational quality of fish. Our goal is to create the scientific foundations for the conservation of wild fish populations and for sustainable fisheries management and aquaculture. 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
Research group
Mechanisms and Functions of Group-Living

Werner Kloas

Head of Department
Research group
Aquaponics and Ecophysiology

Department members

Selected publications

Methods in Ecology and Evolution
October 2023
Methods in Ecology and Evolution. - 14(2023)10, S. 2514-2530

Positioning aquatic animals with acoustic transmitters

Robert J. Lennox; Kim Aarestrup; Josep Alós; Robert Arlinghaus; Eneko Aspillaga; Michael G. Bertram; Kim Birnie-Gauvin; Tomas Brodin; Steven J. Cooke; Lotte S. Dahlmo; Félicie Dhellemmes; Karl Ø. Gjelland; Gustav Hellström; Henry Hershey; Christopher Holbrook; Thomas Klefoth; Susan Lowerre-Barbieri; Christopher T. Monk; Cecilie Iden Nilsen; Ine Pauwels; Renanel Pickholtz; Marie Prchalová; Jan Reubens; Milan Říha; David Villegas-Ríos; Knut Wiik Vollset; Samuel Westrelin; Henrik Baktoft

The paper offers an introduction to novel methods of high-resolution positional telemetry that provide guidance to practioners. It presents a summary of all techniques for fine-scale positioning of the movements of fish.

June 2023
Proceedings of the National Academy of Sciences of the United States of America. - 120(2023)13, Art. e2217386120

To save sturgeons, we need river channels around hydropower dams

Liang Zhanga; Haijun Wanga; Jörn Gessner; Leonardo Congiub; Tim J. Haxton; Erik Jeppesen; Jens-Christian Svenning; Ping Xie

Weirs and other transverse structures in rivers not only impede migratory fish on their way to spawning grounds, but even if they are able to pass, many of them die in the turbines of hydroelectric power plants. The authors present a recommendation on how to facilitate effective passage and even promote sturgeon with bypass channels at dams that can serve as additional habitat.

June 2023
Reviews in Fish Biology and Fisheries. - 33(2023), 1095–1111

Global responses to the COVID-19 pandemic by recreational anglers: considerations for developing more resilient and sustainable fisheries

J. Robert Britton; Adrian C. Pinder; Josep Alós; Robert Arlinghaus; Andy J. Danylchuk; Wendy Edwards; Kátia M. F. Freire; Casper Gundelund; Kieran Hyder; Ivan Jarić; Robert Lennox; Wolf‑Christian Lewin; Abigail J. Lynch; Stephen R. Midway; Warren M. Potts; Karina L. Ryan; Christian Skov; Harry V. Strehlow; Sean R. Tracey; Jun‑ichi Tsuboi; Paul A. Venturelli; Jessica L. Weir; Marc Simon Weltersbach; Steven J. Cooke

The study investigated the impact of COVID on recreational fisheries across the globe.The authors found COVID to increase local recreational fisheries participation but to reduce touristic recreational fisheries where travel restrictions were in place.

June 2023
Diversity and Distributions. - XX(2023)XX, XX

The European freshwater landscape and hotspot areas of mass effects and regional connectivity

David Cunillera-Montcusí; Jordi Bou; Thomas Mehner; Sandra Brucet; Matías Arim; Ana I. Borthagaray

The authors detected great concentrations of source hotspots on the northern regions associated to lentic ecosystems, main European rivers acting as ecological corridors for all freshwaters, and a mixed distribution of connectivity hotspots in southern and Mediterranean ecoregions.

June 2023
Journal of Environmental Management. - 342(2023), Art. 118298

Socio-economic or environmental benefits from pondscapes? Deriving stakeholder preferences using analytic hierarchy process and compositional data analysis

Hoang-Tien Vo; Maria Vrachioli; Fabian Frick; Johannes Sauer; Sandra Brucet Balmana; Lluís Benejam Vidal; Thomas Mehner; Pieter Lemmens; Beat Oertli; Aurelie Boissezon; Meryem Beklioglu; Antoine Dolcerocca; Mariana Meerhoff

The authors studied the needs and knowledge of stakeholders who own, work, research, or benefit from pondscapes in 8 countries. Using the analytic hierarchy process, this study shows that in general stakeholders in the European and Turkish demo-sites prefer environmental benefits, while stakeholders in the Uruguayan demo-sites rank the economic benefits higher.

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