Since 1989, the effects of an experimental management by mowing at different periods of the year have been followed in a limestone grassland of the " Abannets " plateau (Nismes - province de Namur). The evolution in 6 managed and 2 unmanaged quadrats (each of 100 m2) has been compared, using the number of flowers/inflorescences produced, the diversity of plant species/m2 and the dynamic of orchid populations as indicators. The results showed a positive response for most of the species between 1989 and 1995. Since 1995, the contrasted responses observed could be due to the development of a dense, close herb layer and the regression of the gaps in the canopy (regeneration niches). The results have been used to adapt the management plans of the nature reserves in Wallony.
limestone grassland management, mowing, Ecology, Habitat management, restoration, Dry grasslands and steppes, Conservation, Restoration and Sustainable Use of Biodiversity, terrestrial, ecology, Belgium, Wallony, Viroin Valley, Nismes, province Namen
|Conservation de la nature||unknown|
created:2011-12-14 14:18:59 UTC, source:biodiv