Resumo

VALENCIA-A., Susana  e  GUAL-DIAZ, Martha. The Fagaceae family in the cloud forest of Mexico. Bot. sci [online]. 2014, vol.92, n.2, pp.193-204. ISSN 2007-4476.

Cloud forest in Mexico is one of the most fragile biomes, wherein some species of Fagaceae family play a key ecological role. Based on data from reviews of herbarium material, publications of Mexican cloud forest, field visits and Mexico's cloud forest biodiversity information system housed by Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, we present an analysis of the Fagaceae family in the cloud forests of Mexico, with special emphasis in the 13 main regions proposed by Comisión Nacional para el Conocimiento y Uso de la Biodiversidad as priority for the conservation of cloud forests in the country. Likewise, we compiled the risk categories of the Fagaceae family from the cloud forest. Results show that the family is represented in this community by 46 species of Quercus (32 from the Lobatae section and 14 from the Quercus section), and one species of Fagus. Thirteen of these species are considered exclusive or almost exclusive to this community and endemic to Mexico. Among the priority regions, region III (Huasteca Alta Hidalguense) is the most diverse with 26 species; while region VII (Los Tuxtlas) is the less diverse with only two species. The ß diversity analysis shows intermediate to high rates between the 13 regions (from 0.41-1). Most similar regions in Fagaceae species were III (Huasteca Alta Hidalguense) and V (Centro de Veracruz). The Fagaceae species of Mexican cloud forest classified in some level of risk or threat are 41. Among them, we highlight eight oak species of section Lobatae, considered critically endangered, and five of section Quercus in the same category.

Palavras-chave : conservation; distribution; Fagus; Quercus; priority regions; species richness.

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