engleski

Chasmophytic vegetation of the Centaureo Cuspidatae- Portenschlagiellion Ramosissimae (south-eastern Adriatic, ne Mediterranean)

The Centaureo-Portenschlagiellion describes the cliff vegetation of the south-eastern Adriatic. This habitat type harbours many endemic taxa and has a high value for biodiversity conservation. Notwithstanding its importance, knowledge about the syntaxonomy of this alliance is still poor. This paper aims at revising the synchorological, coenological and floristic relationships of the associations of the Centaureo-Portenschlagiellion. The revision is based on a data set of 103 relevés of Mediterranean xerothermic cliff from Croatia, Bosnia and Herzegovina, and Montenegro. The relevés were clustered by using the Flexible beta method. The Indicator Species Analysis was used to identify the diagnostic taxa of the main clusters of relevés and NMDS ordination was undertaken to visualize the floristic relationships among them. Results revealed that only seven associations belong to the Centaureo-Portenschlagiellion whereas the others already described in phytosociological literature, were invalidly described or should be treated as syntaxonomic synonyms of the previous ones. Two associations (Inulo- Centaureetum cuspidatae and Portenschlagiello- Campanuletum portenschlagianae) were reduced to the rank of subassociations of the Moltkio- Inuletum verbascifoliae. Other two were described for the first time. Data provided with this revision may be considered as an essential base-line information that should aid in evaluating the state of this vegetation type in the future.

Asplenietea trichomanis ; Centaureo-Campanuletalia ; cliff vegetation ; phytosociology ; syntaxonomy ; the Balkans

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