Effects de microperturbations experimentales sur la dynamique de la diversite vegetale d'due roseliere alluviale eutrophe

摘要

In an eutrophic alluvial reed bed in western France, artificial disturbance(mowing) and natural disturbances(cattle, roebucks, boars, voles...)are very frequent. In order to mime these disturbances, experimental small-scale disturbances of various intensities were generated in April 1996 after the end of the winter flooding. The two first intensities of dis- turbances(I1 and I2)were created by herbicide contact(Round-up~R)associated(I2)or not (I1)with litter removal.