Amazonas bassin ; Amérique du Sud ; Charbon fossile ; Colombie ; Datation radiocarbone ; Forêt ; Géographie physique ; Holocène ; Variation climatique ; Vénézuela ; Zone intertropicale
The ubiquitous occurrence of charcoal in the forest soils of the Upper Rio Negro region of Colombia and Venezuela indicates the presence of frequent and widespread fires in the Amazon Basin possibly associated with extremely dry periods or human