Name:
Llanos Non-flooded Savanna Macrogroup
Reference:
NatureServe Biotics 2019
Description:
This macrogroup includes upland open to wooded savannas distributed in the Orinoquian Llanos of Colombia and Venezuela. Open savannas develop in flat areas with surficial laterite soils, while wooded savannas tend to grow on medium to deep sandy clay soils with an incipient drainage network due to high soil permeability, or on the colluvial deposits at the base of higher terrain called "mesas." Other settings include the lower foothills of the eastern Andes and well-drained mesas with varied types of soils (quartzitic sands, Oxisols, Alfisols, Ultisols, Inceptisols) but generally very poor in nutrients (oligotrophic) and quite acidic. In these savannas the seasonality and topography include a season with moisture availability, followed by a more-or-less prolonged dry period. In woody savannas there are one to two woody strata but always with a dense herbaceous stratum. The following list of species is diagnostic for this macrogroup. Herbaceous: <i>Trachypogon vestitus, Trachypogon</i> spp., <i>Axonopus canescens, Leptocoryphium lanatum, Andropogon selloanus, Paspalum carinatum, Bulbostylis stenocarpa (= Bulbostylis junciformis), Bulbostylis capillaris, Bulbostylis conifera, Cyperus falvus</i>. Woody species: <i>Curatella americana, Byrsonima crassifolia, Cassia moschata, Copaifera officinalis, Xilopia aromatica, Godmania macrocarpa</i>, and <i>Genipa americana (= Genipa caruto)</i>. Open forests components: <i>Copaifera pubiflora, Hymenaea courbaril, Cassia moschata, Lonchocarpus ernestii, Luehea candida, Pterocarpus podocarpus, Fagara pterota, Vochysia venezuelana, Cochlospermum vitifolium, Xilopia aromatica, Vitex appuni, Connarus venezuelensis, Jacaranda obtusifolia, Chomelia spinosa</i>, and <i>Erythroxylum orinocense</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:40924-{DB9EF7EE-AF99-4E29-86E0-AF09EE9BDD74}
Plot-observations of this Community Concept:
0
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