The study deals with coming into existence and development of woody species communities on islands in the middle reservoir of Nové Mlýny, which form a part of the supraregional biocorridor running through the Dyje river floodplain and link up with the biocorridor in the Morava river floodplain of provincial significance. The primary subject of interest is species diversity and dynamics of the natural development of floodplain forest succession initial stages on these islands where limiting factor for the successful growth of woody species stands is water surface level in the reservoir. Last but not least the paper aims at providing an outline of possible tending of these stands in dependence on water level during a to-be-expected revitalization of the reservoir.