La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Numerical revision of syntaxonomy and ecological characteristics of vegetation on gypsum subtrates in Spain (C. and SE.)
Auteurs :	Herminio Boira, Auteur ; Manuel Costa, Auteur ; Jorge Batlle, Auteur ; Pilar Soriano, Auteur ; Javier Loidi, Auteur ; Antonio Samo, Auteur
Type de document :	Article
Dans :	Ecologia Mediterranea (28(1) 2002)
Article en page(s) :	39-53
Résumé :	Scrub vegetation growing on gypsipherous soils of the sedimentary watersheds in the central and southeast regions of the Iberian Peninsula constitutes discontinuous plant formations with both common and differential species. A syntaxonomic revision at the alliance and suballiance level is conducted according to the new groupings and the differential species extracted fom TWINSPAN analysis. Order Gypsophiletalia includes both Thymo-Teucrion verticillati, characterising the Alicantino and Murciano Sectors of the Murciano-Almeriense biogeographic province and Lepidion subulati alliances. The largest floristic and ecological diversity of latter alliance allows for the establishment of three suballiances: Lepidienion subulati, in the Castellano-Maestrazgo-Manchega province, Sector Manchego, Gypsophilo-Santolinenion viscosae in both the Betica and Murciano-Almeriense provinces and Gypsophilenion hispanicae in the Valenciano-Catalano-Provenzal province, Sector Setabense. Floristic affinities between biogeographical provinces and their relationships with bioclimatic and edaphic factors are established.

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