Abstract
The dispersal and dynamics of the clonal aquatic plant Ranunculus Lingua were studied in a marginal river population in northern Sweden, where this species is dispersed exclusively by vegetative diaspores (i.e. floating rhizome fragments). The study focused on the extent and range of dispersal, relationships between dispersal and distribution of established stands of R. lingua, and between dispersal and environmental characteristics of the river (i.e. «river status»), the establishment success of vegetative diaspores, and the relative changes in ramet numbers between years. Between 0-8 and 2-9% of the total population of ramets was estimated to disperse each year. Most rhizomes were dispersed within 1 -5 km in a leptokurtic pattern. A river lake functioned as a dispersal barrier, preventing dispersal distances greater than 3 km (...)
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