Relationship between recovery of river-bed vegetation from flood and its microhabitat

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In river ecosystem, the disturbance of flood and regeneration from disturbance have important roles to maintain dynamism of the ecosystem. Large flood occurred on 2007, in the Tama River. We studied the change of habitats and plants growing in the river bed. The plants of studding objects are Spiraea thunbergii in the upper course, Aster kantoensis in the middle course, Aster tripolium in the lower course, a benthic alga Cladophora glomerata in the middle course. They showed characteristic behavior respectively.