Biome types, savanna

The natural vegetation of a large majority of the Venezuelan Llanos region consists of a complex mosaic of herbaceous ecosystems, especially savannas. The next most important biome of these wide plains is that of the forests, ranging from small areas of evergreen (ombrophilous) lowland forests to entirely deciduous (tropophilous) low forests, and to riverine forests of the gallery type. 

Studies of floristic similarity were carried out using 43 areas selected as representing the major biomes of north-eastern Brazil Atlantic rain forest (mata atldnticd), savannas cerrados), upland rocky fields compos rupestres) and caatinga. In the case of the caatinga, areas that were different based on physiognomy, type of substrate and occurrence in different geomorphological units were included (Table 6.1). An additional criterion for selection of an area was the availability of voucher specimens to check identification. In addition to the species cited in the published checklists, other... 

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