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BARRIOS-MORALES, F.; ALANIS-MENDEZ, J.L.  and  CARVAJAL-HERNANDEZ, C.I.. Diversity of ferns and lycopods in the Talhpan private conservation area, Papantla, Veracruz, Mexico. Polibotánica [online]. 2019, n.47, pp.1-12. ISSN 1405-2768.

The knowledge of the pteridophyta in flora of the northern zone of Veracruz is scarce, and ever more when it comes to species richness of ferns and lycopods in the elevational low zones. The aim of this research is to analyze the diversity of ferns and lycopods in a semideciduos forest. Were established 15 plots of 20 x 20 m in three habitats (semideciduos forest fragment, riparian vegetation and citrus cultivation) to analyze the richness, abundance and turnover of species of these groups in different habitats. In addition, the species present in areas bordering the reserve were registered. A total of 22 species of ferns and lycopods were recorded, of these, 17 correspond to the sampling plots and the rest were found in adjacent sites. The riparian habitat presented the highest specific richness, followed by the semideciduos forest fragment; these two habitats had a floristic similarity of 22%. Citrus cultivation had the lowest specific richness. The forest in the research area represents a refuge for the diversity of ferns, however the riparian vegetation was the one that presented the greatest diversity. The replacement of species in the different habitats is high, which has a value for conservation plans, since it is necessary to include landscape heterogeneity in the proposals for the preservation of ecosystems.

Keywords : alpha and beta diversity; floristic inventory; pteridophyte; riparian vegetation; semideciduos forest.

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