Ecology-floristic classification of the Russian Black Sea shelf bottom vegetation

In this article we described the attempt of syntaxonomic analysis of macrophytobenthos of the Russian Black Sea shelf. Ecological characteristics were described for the 9 communities, which combined in 4 classes, 6 orders and 6 alliances. The factors of community organisation were revealed. Diagnostic species were designated for new communities. The criteria of revealing of bottom communities and their correspondence to foreign systems are discussed.