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Extensive efforts have been made in recent years to restore rivers with a view to increasing the ecological value of riparian areas and the surrounding landscape and to improving the protection provided against extreme flooding events. One of the important factors for the successful establishment and survival of tree and shrub species in enlarged river corridors (particularly in lowlands) – and in retention basins – is their capacity to survive in anoxic conditions, i.e. their flooding tolerance. The importance of improving our understanding of flooding tolerance and the associated factors is underlined by the increasing interest shown in these issues by landscape planners and forestry services throughout Europe. Knowledge about the physiological and metabolic response of most Central European tree and shrub species is still incomplete. From a management perspective, there is a high level of interest in exploiting …