Abstract

SUAREZ SALAZAR, Juan Carlos; DURAN BAUTISTA, Ervin Humprey  and  ROSAS PATINO, Gelber. Soil macrofauna associated to agroforestal systems in Colombian Amazon. Acta Agron. [online]. 2015, vol.64, n.3, pp.214-220. ISSN 0120-2812.  https://doi.org/10.15446/acag.v64n3.38033.

The density, richness and diversity of soil macrofauna are influenced by diverse factors such as the configuration 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 agroforestal arragements located in the Research Centre Macagual Cesar Augusto Estrada González property of the University of Amazonia, Colombia. The experiment was conducted under a complete randomized bifactorial design with 4 treatments (agroforestry system) and 2 periods (maximum and minimum precipitation), with 4 replicates in split plots. Principal component analysis was performed to explore the relationships between the orders and the effect of the agroforestal arrangements, which was tested with a test of Monte Carlo. The results showed that the density of the macrofauna was higher in the period of maximum pluvial precipitation compared to the minimum (1129 vs 598 subjects, respectively). The agroforestal arrangements influences the presence or absence of some taxonomic groups of soil macrofauna (P<0.05) as Homoptera and Raphidioptera, besides than UV and AB can favor the macrofauna of the stress due to the drought

Keywords : Soil fauna; agroforestry arrangement; period; density; richness; diversity.

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