| Abstract | The community of soils macroinvertebrates was evaluated in 22 different systems of use of the soil, in the zone of Yurimaguas and Pucallpa; by manual separation of 10 samples by system of use of 25 cm x 25 cm x 30 cm, during the rainy season. The primary forest not intervened and intervened has great diversity, and a density (382 to 853 individual/m2) and a high biomass (57,8 to 91,1 g/m2) dominated by worms, isopteras and myriapods. In cultivations this community is severely exhausted, with a density from 362 to 574 individual/m2 and a biomass from 5,1 to 32,4 g/m2. The pastures have lowers diversity, with density of population in a rank from 654 to 1 034 individual/m2 and a biomass as high as from 38,4 to 165,9 g/m2, due to the colonization of the «Peregrine worm» Pontoscolex corethrurus. In the fallows purmas the population density is in a rank from 334 to 838 individual/m2; and a biomass from 4,2 to 102 g/m2; being the wealth taxonomy greater that of the primary forest in some cases. Finally the agro forestry systems, with cover of leguminous have the highest diversity, being the contrary thing in the systems with cover of weeds that are under the secondary forest. The population density is found in a rank from 557 to 2 896 individual/m2 and a biomass from 18,5 to 170,5 g/m2, due to the conservation of great part of the fauna of the primary forest and besides they are colonized for opportunist’s species of disturbed lands (myriapodos, worms and isopteras). |
