Syntaxonomy, ecology and distribution of the Potamogeton genus in Bulgaria
Keywords:
ecology, macrophyte vegetation, syntaxonomy, wetlandsAbstract
The research aims to provide a comprehensive review of the syntaxonomy, ecology and distribution of the Potamogeton communities in Bulgaria. A dataset of 171 relevés, collected across the country according to the Braun-Blanquet approach was analysed. Hierarchical clustering was performed with the PC-ORD software package using the Bray-Curtis dissimilarity and the flexible beta clustering algorithm for classification analyses. The diagnostic species were determined by calculating the Phi-coefficient and only the statistically significant values were considered.
The syntaxonomical diversity is represented by 1 class, 1 order, 2 alliances and 10 associations (Potamogetonetum pusilli*, Potamogetonetum berchtoldii*, Potamogetonetum crispi, Potamogetonetum lucentis, Potamogetonetum natantis, Potamogetonetum nodosi, Potamogetonetum pectinati, Potamogetonetum perfoliati*, Potamogetonetum trichoidis*, Scirpo fluitantis-Potametum polygonifolii*). The most wide-spread associations are Potamogetonetum nodosi and Potamogetonetum natantis. Five associations are recorded for the first time for the territory of the country.
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