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The role of aquatic vegetation in wetland ecosystems is closely related with  their abundance, diversity and distribution, which in turn represents synergy  of various environmental factors. The floristic composition of the aquatic  vegetation in two neighboring lakes (Vegoritida and Petron) in north-central  Greece was investigated by means of 160 relevés, which were recorded using  the Braun-Blanquet method. The analysis of relevés based on TWINSPAN  clustering showed the existence of 10 plant communities from the Lemnetea,  Potametea, Phragmito-Magnocaricetea and Juncetea maritimi classes. The most  important environmental factors for the vegetation differentiation in the  study area, according to the ordination diagram, are light intensity and  water depth of the habitats. The plant species diversity was quantified with  species richness, Shannon Diversity and evenness indices at a scale of each  relevé, with a sampling size of 20 m2. There was a clear differentiation  between the relevés at the more eutrophic Petron Lake and those at Vegoritida  Lake. The mean plot diversity was also calculated for each plant community,  to enable comparison of the diversity indices among the communities at the  plot level

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Abundance, diversity and distribution of macrophyte communities in neighboring lakes of different trophic states and morphology in north-central Greece