[PDF] Top 20 Activity of soil microbial biomass altered by land use in the southwestern Amazon

... while the different behavior presented by agricultural areas may be related to soil management and the different types of crops found in the region (soybean, corn, rice, ... See full document

... agricultural use to satisfy food, fiber, and forage production for a growing world ...interest in evaluating forest conversion to cultivated land because this conversion adversely affects several ... See full document

... that Amazon tropical forest soils contain high microbial ...actions of slash and burn, mainly for pasture establishment, induce profound changes in the well-balanced biogeochemical ... See full document

... yield in semiarid regions in northwestern China, but little is known about the effect of different mulching systems on the microbial properties of the soil, ... See full document

... (RR) of both soils was affected by the interaction between herbicides and evaluation periods (Table ...3). In the sandy loam soil, RR increased at 20 DAA, except for the ... See full document

... one of the most biodiverse biomes, the Amazon has a featured role in the discovery of new species of plants, animals and microorganisms, which may be important for ... See full document

... characteristics of organic farming include: a) Protecting the long-term fertility of soils by maintaining high level of organic matter content and increasing soil biological ... See full document

... to the high microbial activity of these soils, observed by high content of Cmic (Figure ...is the soil glycoprotein fraction easily decomposed and deposited ... See full document

... Preliminary soil samples were taken from three georeferenced points in each field that would be used to determine the pH, clay, silt and sand content and other chemical ...characteristics. The ... See full document

... after the trees were planted, MBCSO and MBNSO were highest in CA and CE, together with A and EN (Figure ...increased in all treatments. The highest values were found in A, and high ... See full document

... at the alternate sides, of the tangents through the diameter of the circle, and then the line joining these points divides the circle in the ratio ... See full document

... Changes in the agricultural environment can be determined by providing microbiological indicators of the soil since the soil microorganisms are sensitive to ... See full document

... disturbance of the soil breaks the dynamic equilibrium of the soil causing emission of CO 2 into the atmosphere (Paustian et ...2000). In the ... See full document

... In the assays of this study , low MUB signifi- cantly reduced variations in soil phosphatase activ- ity when compared to MUB, and resulted in higher enzyme activity ... See full document

... that the actual agricultural production in BLA represents 73.9% of its ...that the average BLA farm could increase its agricultural production in ...using the current amount ... See full document

... - The goal of this work was to evaluate the response of edaphic macrofauna, soil microbial biomass carbon, soil basal respiration, metabolic quotient and labile ... See full document

... sporulating in trap cultures, we acknowledge that this number does not represent the total alpha diversity of AMF occurring in these ecosystems as undergoing analysis from field collected ... See full document

... Populations of bacteria and actinomycètes are reported to have a protoplasmic C/N ratio of 5; whereas fungi have a ratio of 10 (Miller, ...1991). The results suggested a change from an initial ... See full document

... increase in the coming decades indicates directions that seem paradoxical: more food and energy production are needed together with environmental ...Reports of the Intergovernmental panel on ... See full document

... field of study are matched following the description reported in Table A1 (columns (1) and ...areas of study, mainly for those comprising an important share of the individuals ... See full document