The results indicate that the majority of the regions with the highest indices of endemism have a dry climate with xeric vegetation, with the exception of two areas of tropical and temperate forests. Species richness and weighted endemism index was calculated for each of these units. A database with 9416 entries based on specimens of species belonging to 259 monophyletic groups of angiosperms from Mexico was compiled, and their presence-absence recorded for every unit area. Lineages of angiosperms, families, genera, and formal or informal groups within genera previously retrieved as monophyletic are selected to represent evolutionary history in equivalent spatial units. To categorize zones for preservation, the approach followed takes biodiversity, weighted endemism and evolutionary history into account. In this paper, areas of endemism for the flowering plants of Mexico are identified to prioritize regions for conservation.
There is concern because several factors are impeding its conservation. As a megadiverse country, Mexico harbors 4 to 8% of the flora of the world and of this, 51% is endemic.
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