Determinación de la diversidad y abundancia de órdenes de macrofauna del suelo en áreas de restauración de sabanas inundables sometidas a pastoreo y monocultivo de maíz en Yopal - Casanare, Colombia.

Abstract

The change in land use in the lowland areas of the Colombian Orinoquia generates changes in the dynamics of the macrofauna and the ecological dynamics that occur in these ecosystems, in this sense the macroinvertebrates can be bioindicators in restoration processes that are carried out in these areas. This work used the TSBF methodology to evaluate the diversity of macrofauna in 60 soil monoliths in the Fundo Palmarito Civil Society Nature Reserve, distributed in four zones: cattle ranching savannahs, restoration zone (this in turn divided into Investment and Compensation) and gallery forest, in order to establish the change of macrofauna with the implementation of restoration schemes. Twenty-five taxonomic orders and a total of 7581 individuals were identified. Restoration areas showed greater richness of orders, while the savanna presented more rare orders. The orders Stylommatophora, Geophilomorpha, Hymenoptera and Crassiclitellata were indicative of gallery forest and savanna. Throughout the sampling the representative orders were Blattaria: Isoptera, Hymenoptera and Crassiclitellata, typical in these areas of the country. A photographic guide of soil macroinvertebrates was developed as a final product of this work in order to be fed from subsequent sampling.