Anales del Jardín Botánico de Madrid, Vol 55, No 2 (1997)

A new phytogeographic proposal based on the endemic monocots of the Iberian Península and the Baleario Islands


https://doi.org/10.3989/ajbm.1997.v55.i2.280

Juan Carlos Moreno Saiz
Universidad Autónoma de Madrid, Spain

Helios Sainz Ollero
Universidad Autónoma de Madrid, Spain

Abstract


A new proposal to establish floristic regions in the Iberian Península and the Balearte Islands, based on their endemic monocots, is presented. The data matrix was built with 182 species and subspecies mapped on the UTM 10 x 10 km grid, and using the TWINSPAN programme for classification. The 2094 squares with chorological information were divided into 10 sectors with subsectors. These sectors do not cover the whole studied territory due to the lack of chorological data for some regions. Some Iberian áreas belonged to a single sector, while in others a combination of sectors was a notable feature. Results are discussed taking into account previous proposals to delimit Iberian and Balearic fitogeographical áreas, and the principal endemic floristic characters, which it has been possible to differentiate, from the point of view of their distribution, are emphasized.

Keywords


Endemism; monocotyledons; Iberian Península; Balearic Islands; multivariate analysis; biogeography

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