This habitat includes silt, sandy and gravel banks and shores in the Mediterranean region in which sediments are exposed in summer and redeposited by winter floods. It occurs both in the channels of intermittently flowing rivers and on the bottoms or at the edges of lakes. Where vegetation develops, it includes plants tolerant of either extremely dry or very wet conditions, often pioneer and nitrophilous species, both annual and perennial. The occurrence of particular species also depends on the physical and chemical character of the debris.