Primeros datos Polínicos procedentes del valle del río Irini (Oukaimeden, Alto Atlas. Marruecos): aproximación al paisaje vegetal

Abstract

We present the results of a palynological analysis carried out in two pollen record, OK6-AD and ORI-1, to find how the vegetation changes during the Holocene time. the area of study is located in Oukaimeden valley (National Park of toubkal, at 70 km to the S of Marrakesh, Morocco), and is rich in archaeological occupations (shelters, mounds, etc.), development during Upper Neolithic and historical time. Palynological study, in archaeological contexts (OK6-AD) and natural deposits (ORI-1), shows the vegetal landscape evolution, under climatic conditions or human activity. Open landscape is reconstructed by palynological data; nitrophylus taxa (Plantago) and Ruderales grass, are dominate; arboreal group present few values and is constituted essentially by Cupressaceae (Juniperus). Erosion processes, deforestation, changes in the trophic conditions of the deposit and variations of the anthropic activity have been detected, through presences of Non Pollen Microfossil.