Abstract:The natural vegetation in and around Mexico City once harbored an unusually high number of plant and animal (insect) species, including endemics (Vázquez 1973, Ceballos & Galindo 1984, Rzedowski 1991). The high diversity in this region has been attributed to the unusual topography resulting from a series of volcanic eruptions that ended ca. 1800 years ago (Siebe et al. 2004). In addition, two phyto-geographic regions overlap within Central Mexico that support diverse vegetation types (e.g., shrubs, mature… Show more
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