Name:
Semi-Arid Pampa Grassland & Shrubland Macrogroup
Reference:
NatureServe Biotics 2019
Description:
This macrogroup represents the grasslands located in the central and western portions of the Argentinian Pampa plains, with vegetation communities adapted to sandy substrates which remain from old eolian sand deposits. This highly drained substrate, combined with a semi-arid climate with annual precipitation around 600 mm or less, results in a grassland cover of 50-70%, up to 1 m tall, which in conditions of less disturbance can develop a scrub stratum of thorny and microphyllous species of <i>Prosopis</i> and <i>Acacia</i>. This macrogroup includes the vegetation communities of the topographic uplands (dunes) and the swales in between which in some cases have a slight saline property. Characteristic species are <i>Jarava brachychaeta, Nassella trichotoma, Elionurus muticus, Hyalis argentea, Panicum racemosum, Panicum urvilleanum, Poa lanuginosa, Spartina coarctata, Sporobolus rige, Ambrosia tenuifolia, Andropogon ternatus, Cenchrus spinifex, Conyza bonariensis, Eragrostis lugens, Eryngium horridum, Facelis retusa, Glandularia peruviana, Gnaphalium gaudichaudianum, Hypochaeris pampasica, Jarava plumosa, Lathyrus pubescens var. pubescens, Nassella neesiana, Oenothera odorata, Pfaffia gnaphaloides, Plantago patagonica, Senecio ceratophylloides, Solanum sisymbrifolium, Thelesperma megapotamicum, Veronica peregrina, Vicia graminea var. graminea</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:40700-{2315EE70-2785-43A6-9DD1-EA3F3EC89987}
Plot-observations of this Community Concept:
0
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