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Lehrstuhl für Biogeografie

Prof. Dr. Carl Beierkuhnlein

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Harter, D*; Audorff, V; Beierkuhnlein, C: Genetic similarities between isolated habitats – dispersal patterns of crenobiont plant species
Poster, 39. Jahrestagung der Gesellschaft für Ökologie (GfÖ), Bayreuth: 14.09.2009 - 18.09.2009


In springs, factors like temperature, air humidity and others have a low seasonal variation compared to surrounding habitats and other terrestric or aquatic biotopes. Hence they represent very isolated and singular habitats with an own flora that is remarkably different to the ambient communities. This project aims to get a clue of the dispersal mechanisms of crenobiont plant species by relating geographical patterns of occurrence to patterns of genetic relatedness over different spatial scales. Besides looking at distances between the helocrenic springs (all in Frankenwald mountain range, central Germany) as dispersal limits we compare populations that are separated through different possible dispersal obstacles comprehending wind direction, ridges, valleys etc. to compass biogeographical patterns, colonization histories and other species-specific limits of dispersal. Furthermore we incorporate diaspore morphologies and other dispersal-relevant traits to get hints for the species’ dispersal potentials which will be another information of the effective isolation of spring communities and its determinants.

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