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Humid Pampa Grassland & Shrubland Macrogroup | NatureServe Biotics 2019
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Name: Humid Pampa Grassland & Shrubland Macrogroup
Reference: NatureServe Biotics 2019
Description: Warm temperate, humid grasslands of Argentina and Uruguay distributed around the Rio de la Plata and the lower reaches of the Parana and Uruguay rivers, covering the region known as Pampas, including the grasslands of the Argentinian Mesopotamian parkland to the northwest and bounded by the Espinal region along the southern and western margins. The macrogroup includes the mesic grasslands distributed on both the fertile, loessic soils characteristic of the eastern Argentinian Pampas and on other varied substrates common in the Uruguayan Pampas, as well as those of the hills of Tandil and Ventana in the southern portion of the Pampas region. They have in common a mesic climate, with interannual variations in precipitation, well-drained soils and a gradient of topographical positions between depressions and ridges measured mostly in centimeters only. The gradients in soil fertility, composition and drainage allow for several distinct grassland communities to coexist, some of them more diverse than others, with other herbs or small shrubs intermingled. The dominant genera are <i>Nassella</i> and <i>Jarava (= Stipa), Piptochaetium</i>, and <i>Poa</i>. Distributions farther north like the Mesopotamia region include megathermic C4 grass genera such as <i>Bothriochloa, Digitaria, Paspalum, Schizachyrium</i>, and <i>Andropogon</i> and <i>Paspalum</i> in Uruguay. The communities have 50-100% cover and vary from 0.5-2 m high. 
Accession Code: urn:lsid:vegbank.org:commConcept:40979-{A465CEED-4AC0-4E5C-B3F5-9F855777044B}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 17-Apr-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.885085 NatureServe ExplorerNatureServe Explorer logo
  Code: M748
  Scientific: Humid Pampa Grassland & Shrubland Macrogroup