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High Mountain Psychro-Xerophilous Calcicolous Pastures of the Iberian Peninsula: Minuartio-Poion ligulatae

Julio Peñas, Javier Cabello, Francisco Valle and Juan F. Mota
Folia Geobotanica
Vol. 36, No. 4 (2001), pp. 353-369
Published by: Springer
Stable URL: http://www.jstor.org/stable/25133854
Page Count: 17
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High Mountain Psychro-Xerophilous Calcicolous Pastures of the Iberian Peninsula: Minuartio-Poion ligulatae
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Abstract

A syntaxonomical review of the Minuartio-Poion ligulatae (Festuco hystricis-Ononidetea striatae) in the Iberian Peninsula, supported by numerical classification (complete linkage clustering) and ordination (correspondence analysis), is presented. Communities of psychro-xerophilous calcicolous plants occur in the high mountains and "parameras" of the south and central western Iberian Peninsula, areas which suffer from severe frosts. The data collected point to three large groups of communities: those of the chorological Carpetano-Ibérico-Leonesa Province; those of the Castellano-Maestrazgo-Manchega Province; and those of the Bética Province. Within the latter group, similarities and differences between the communities were analyzed and two new associations (Herniario boissieri-Festucetum hystricis and Pimpinello gracilis-Festucetum nevadensis) were described. In addition, data clearly support the existence of a humidity-xericity gradient responsible for the distinction of the communities into different syntaxonomic units.

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