Estudio de la diversidad funcional entomológica asociada a agroecosistemas con manejo agroecológico

Abstract

The study focuses on the effect of crop diversification and integration in organic farming systems on the entomofauna diversity. Entomofauna sampling was conducted in three areas of the agroecological module of vegetables cultivation in Nataima Research Station (Tolima, Colombia). The sampling method was standardized in time and surface, using a motorized D- Vac vacuum insect collector. Three sampling of one square meter were made within each area. Functional Groups of Entomofauna (FGE) were characterized and Shannon Diversity index was calculated. 1523 individuals from 33 families were collected. The composition of functional groups was greater in the more complex subsystems; absolute abundance was highest in phytophagous insects, followed by predators and parasitoids. It is an evidenced of dense-dependent relationship between insect pests and their natural enemies in the evaluated subsystems that favors the functional diversity