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North Sahel Treed Steppe & Grassland Macrogroup | NatureServe Biotics 2019
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Name: North Sahel Treed Steppe & Grassland Macrogroup
Reference: NatureServe Biotics 2019
Description: This macrogroup corresponds to the northern, drier portion of the Sahel region, the Sahel-Sahara grass and treed steppe, with a mean annual rainfall of 100-200 mm. It groups the semi-desert natural communities of the southern portion of the South Saharan Steppe and Woodlands ecoregion (WWF) that extends in a narrow band from central Mauritania, through Mali, southwestern Algeria, Niger, Chad, and across Sudan to the Red Sea, covering the southern fringes of the Sahara Desert. Rainfall occurs mainly during the summer months of July and August, but is unreliable and varies greatly from year to year. In the north it stops at the 100-mm rainfall isohyet which is the northern limit of summer grassland pasture composed of the grasses <i>Eragrostis, Aristida</i>, and <i>Stipagrostis</i> spp. with the herbs <i>Tribulus, Heliotropium</i>, and <i>Pulicharia</i>. Woody species include <i>Acacia tortilis, Acacia ehrenbergiana, Balanites aegyptiacus</i>, and <i>Maerua crassifolia</i>, which mainly grow along wadis. In the south, the vegetation of the ecoregion grades into the Sahelian Acacia Savanna ecoregion, and includes steppes of <i>Panicum turgidum</i>, a perennial tussock grass. 
Accession Code: urn:lsid:vegbank.org:commConcept:40781-{3755BC00-7255-4766-B639-115B011B5FF8}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 01-May-2019 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.861791 NatureServe ExplorerNatureServe Explorer logo
  Code: M477
  Scientific: North Sahel Treed Steppe & Grassland Macrogroup