Effect of decomposition products produced in the presence or absence of epigeic earthworms and minerals on soil carbon stabilization

Microbial use efficiency is thought to greatly influence organic carbon storage in soils through the formation of decomposition products and their stabilization as organo-mineral complexes. Earthworm activity may play a significant role these processes. Of three ecological earthworm groups only two (endogeic anecic species) are be involved soil (SOC) they living mineral soil. The aim this study was investigate produced, with without minerals, by epigeic earthworms at litter-soil interphase for stabilization. We investigated impact eight different types on CO2 emissions, microbial biomass, watersoluble C, N SOC pool allocation an arenic cambisol during 79 days under laboratory conditions. Our results indicated that nature affected mineralization physico-chemical parameters. In general, presence OM decreased emissions after addition increased when compared those produced earthworms. Mineral-containing free counterparts. They also changed physico-chemically protected pools, decreasing contribution particulate matter products. Extrapolation data showed short-term effects were not necessarily long-term nature, but minerals increase sequestration amended therefore conclude crucial fate contrast general paradigm, could have important material susceptible protected, incorporated into