Spatio-temporal aquatic vegetation patterns in former channels in relation to their isolation from the river Rhine (Eastern France)

Summary The degree of isolation between the Rhine and its annexes is related to the distribution of aquatic macrophytes (bryophytes and phanerogames). Three fluvial sectors characterised by different trophic levels and isolation were analysed. Floristic composition and distribution of aquatic plant systems have allowed us to determine the nature of the exchanges between superficial and ground waters. The implications of this relationship between aquatic vegetation and water origin are discussed in the context of restoration work on ecosystems of the river Rhine.