Titleimage: Aquatic Ecology & Evolution

Fishes are the most diverse group of vertebrates, are key players in aquatic ecosystems, provide a diverse set of ecosystem services, and are sensitive to environmental change. We study their ecology, evolution and conservation. We work with fish diversity from traits and genes in populations to the diversity of species assemblages, their change through time and the ecosystem consequences. We are particularly interested in understanding the evolution of endemic diversity within individual ecosystems, such as the radiations of cichlid fish in African lakes and the radiation of whitefish in the lakes around the European Alps. We are a single research group led by Ole Seehausen at the University of Bern but Ole also leads the Department Fish Ecology and Evolution at the Eawag Center for Ecology, Evolution and Biogeochemistry, Kastanienbaum, where we currently host four other research groups that are all associated with the IEE too. The work of the Eawag department is motivated by the aim to contribute to the emerging synthesis between evolutionary biology and ecosystems ecology. There we also host the Swiss Fisheries Advisory Service. Researchers in the department of vertebrates at the Natural History Museum Bern, NMBE, are also affiliated with our University division.

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David Frei defended his PhD successfully - congratulations!

Congratulations to a very successfully defended Phd! David worked over the last four years on the role of hybridization on extinction and speciation reversal in the whitefish species of Lake Constance. Among other things he showed that alleles allowing adaptions to live in the deep waters origination from an extinct species are still around in the population of other withefish species that may allow them to recolonise the deep waters of Lake Constance.

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Agenda

Aquatic Ecology Excursion block 2 - fish excursion

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