Abstract

In this paper we aimed at characterizing phytosociologically the priority habitat 6220* in Northern Sardinia. In the study area this habitat is identified on the field by the presence of 18 plant associations, referred to the following syntaxonomic classes: Helianthemetea guttati, Poetea bulbosae, Artemisietea vulgaris and Lygeo-Stipetea. Within the Brachypodio ramosi-Dactyletalia hispanicae order of the Artemisietea vulgaris class, three new associations are here described for the first time: Ophrydo praecocis-Dactyletum hispanicae, Orchido longicorni-Dactyletum hispanicae and Orchido collinae-Dactyletum hispanicae which are all referred to the Leontodo tuberosi-Bellidion sylvestris alliance. The wide structural and functional heterogeneity, that prevent from outlineing common management strategies to all the 4 vegetation classes included in the habitat, suggests the need of a clarification of the Habitats Directive and its revision on the basis of the recent phytosociologic findings.

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