CABI, Wallingfordīahl KN (1947) Excretion in the oligochaeta. Soil Biol Biochem 25:393–395Īnderson JM, Ingram JSI (1993) Tropical soil biological and fertility – a handbook of methods, 2nd edn.

In addition, selective ingestion concentrates C and N contents in the casts and transformation processes affect the availability of important plant nutrients, topics that deserve further attention, considering the widespread collection of this species for use as fish-bait in Brazil.Īnderson JPE, Domsch KH (1993) The metabolic quotient of CO 2 (qCO 2) as a specific activity paramenter to assess the effects of environmental condition, such as pH, on the microbial of forest soil. The high exchangeable NH 4 and H 2O contents influenced the oxy-reduction processes, affected GHG emissions and N transformations and modified soil microbial biomass and activity.

alatus, maintaining emission of N 2O and CH 4 and confirming previous results observed using gut contents. Nonetheless, fermenting, methanogenic and nitrate-reducing microbes encountered ideal conditions for sustained anaerobic activity in the clayey, dense and moist castings of R. Earthworm casts represented a significantly different chemical and microbiological environment, with higher soil moisture, pH, H + Al, exchangeable NH 4, Cu, Fe and Mn contents, lower microbial biomass C and higher metabolic quotient (qCO 2), but with few differences in CO 2, N 2O and CH 4 emissions compared with non-ingested control soil. Greenhouse gas emissions (CO 2, N 2O, CH 4) and chemical, physical and microbiological properties (pH, macro and micronutrients, texture, moisture, exchangeable NH 4 +, NO 3 −, total C and N, organic C, microbial biomass C and metabolic coefficient) were monitored in casts of a large, endogeic native Brazilian earthworm species Rhinodrilus alatus and from non-ingested control soil incubated for up to 32 days.

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