Serengeti volcanic grasslands

The Serengeti volcanic grasslands are an edaphic plant community that grows on soils derived from volcanic ash. The eruption of the now-extinct Kerimasi volcano 150,000 years ago deposited huge amounts of fine whitish-grey ash. More recent eruptions of the Ol Doinyo Lengai volcano deepened the ash deposits. These ash deposits hardened with time, creating layers of calcareous tuff and calcitic hard-pan soil.[2] The flat or slightly undulating plains are interrupted here and there by rocky kopjes, outcrops of the underlying Precambrian rocks.[3]

Characteristic grass species include Andropogon greenwayi, Chloris gayana (Rhodes grass), Cynodon dactylon (Bermuda grass), Digitaria macroblephara, Eragrostis tenuifolia (Elastic grass), Eustachys paspaloides (Fan grass), Microchloa kunthii (Kunth's smallgrass), Panicum coloratum (Coloured Guinea grass), Pennisetum mezianum, Pennisetum stramineum, Sporobolus ioclados (Pan dropseed), and Themeda triandra (Red grass).[4]