Contribution to the knowledge of rocky plant communities of the Southwest Iberian Peninsula

Quinto Canas, Ricardo; Cano-Ortiz, Ana; Spampinato, Giovanni; del Río, Sara; Raposo, Mauro; Fuentes, José Carlos Piñar; Gomes, Carlos Pinto

http://hdl.handle.net/10400.1/16910

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Authors

Quinto Canas, Ricardo

Fuentes, José Carlos Piñar

Gomes, Carlos Pinto

Abstract(s)

The rocky habitats of southern Portugal are ecosystems with extreme xericity conditions, associated with special abiotic strains. In these unstable ecological conditions, a considerable diversity of plant communities occurs. The objective of this study, carried out in the Algarve and Monchique, and the Mariánica Range biogeographical sectors, is to compare chasmo-chomophytic communities of the southwestern Iberian Peninsula, using a phytosociological approach (Braun–Blanquet methodology) and numerical analysis (hierarchical cluster analysis). From these results, two new communities were identified, Sanguisorbo rupicolae-Dianthetum crassipedis and Antirrhinetum onubensis, as a result of floristic and biogeographical differences from other associations already described within the alliances Rumici indurati-Dianthion lusitani and Calendulo lusitanicae-Antirrhinion linkiani, both included in the Phagnalo saxatilis-Rumicetea indurate class.