Subproject TL-03-1: vegetation and ecology of the "serrania" native pastures of the eastern plains of Colombia (Llanos)

aluminio aluminium calcio calcium colombia colombie comunidades vegetales contenido de materia seca contenido proteico cubierta vegetal disponibilidad de nutrientes dry matter content ecologia vegetal especies llanuras magnesio magnesium natural pastures nutrient availability pastizal natural plaine plains plant communities plant cover plant ecology potasio potassium prairie naturelle protein content sabanas savane soil texture soil toxicity species textura del suelo texture du sol topografia topographie topography toxicidad del suelo