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Isotropic and anisotropic processes influence fine-scale spatial genetic structure of a keystone tropical plant

Addisie Geremew,M. Woldemariam,Alemayehu Kefalew,I. Stiers,L. Triest

Published 2018 in AoB Plants

ABSTRACT

Propagule dispersal shapes fine-scale spatial genetic structure (FSGS), which is mostly a function of physical distance between individuals. However, such a relation with distance may not occur when asymmetric processes, for instance, wind direction during dispersal, are involved. We combined genetic and seed dispersal data to assess the pattern of FSGS in the keystone species Cyperus papyrus as a function of distance and wind direction. Differences in FSGS between adults and juveniles were detected as a function of distance between individuals. Fine-scale spatial genetic structure was also found to be a function of wind direction during dispersal. Our findings further suggest post-dispersal processes could also influence FSGS.

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