Comunidades de marcoinvertebrados edáficos en diferentes sistemas de uso del terreno en la cuenca del Río Otún, Colombia

land use systems in the Otun River Valley, Colombia. Acta Zoologica Mexicana (n.s.), Numero Especial 2: 165-178. ABSTRACT. In the Andean Mountains some agroecosystems are adequate environments for biodi- versity conservation or for the readaptation, recolonization and natural recovery of species. To evaluate this phenomenon, soil macroinvertebrate communities were studied in different land uses of the Otun watershed in Colombia. Nineteen orders were found, with richness ranging from 12 to 16 groups per land use system; the forest had the highest while the plantations had the lowest diversity. Earthworms were the dominant group in terms of abundance (620 individuals m -2 ) and biomass (134.1 g.f.w. m -2 ). ISSN 0065-1737 Acta Zoologica Mexicana (n.s.) Numero Especial 2: 165-178 (2010)