Soil macrofauna associated to agroforestry systems in Colombian Amazon ; Macrofauna edáfica asociada a sistemas agroforestales en la Amazonia Colombiana

The density, richness and diversity of soil macrofauna are influenced by diverse factors such as the con-figuration of agroecosystems, seasonality, among others. In order to assess this influence, sampling was conducted in May and November 2011, corresponding to the periods of maximum and minimum rainfall respectively on the composition of soil macrofauna associated with agroforestry located in the Research Centre Macagual Cesar Augusto Estrada González property of the University of Amazonia. The experiment was conducted under a completely randomized bifactorial design with 4 treatments (agroforestry system) and 2 periods (maximum and minimum precipitation), with 4 replicates in split plots. Principal compo-nent analysis was performed to explore the relationships between the orders and the effect of the agrofor-estry arrangements was tested with a test of Monte Carlo. The results show that the density of the macrofauna was greater in the period of maximum precipitation compared to the minimum (1129 vs 598 subjects, respectively). The agroforestry arrangements influences the presence or absence of some taxo-nomic (P<0.05) as Homoptera and Raphidioptera, besides than UV and AB can favor the macrofauna of the stress due to the drought ; La densidad, riqueza y diversidad de la macrofauna edáfica son afectadas, entre otros factores, por la con-figuración de los agroecosistemas y la estacionalidad de la precipitación. Con el fin de evaluar estos efec-tos en mayo y noviembre de 2011, correspondientes a épocas de máxima y mínima precipitación, respecti-vamente, se realizaron estudios sobre la composición de la macrofauna edáfica asociada con los arreglos agroforestales ubicados en el Centro de Investigaciones Macagual Cesar Augusto Estrada González de Corpoica, Amazonia, Caquetá, Colombia. El experimento se dispuso en un diseño completo al azar bifac-torial con cuatro tratamientos (arreglos agroforestales: AB = abarco – Cariniana pyriformis; CH = caucho Hevea brasiliensis; CP = caucho-parica Schizolobium amazonicum ...