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Neutral and Acidic Sugars in Particle-Size Fractions as Influenced by Climate

^a Inst. of Soil Science and Soil Geography, Univ. of Bayreuth, 95440 Bayreuth, Germany
^b El Macero Drive, 4104 Davis, CA 95616 USA

View larger version (33K): [in a new window]   Fig. 1 Average distribution of (a) neutral and (b) acidic sugars in particle-size fractions of 18 native grassland topsoils (0–10 cm). Different letters above the columns indicate that the corresponding sugar concentrations were statistically different at the P < 0.01 probability level. The error bars result from variations in sugar concentrations of a respective fraction across the prairie

View larger version (27K): [in a new window]   Fig. 2 Relationship of the neutral- and acidic-sugar concentrations in the soil organic matter (SOM) of the clay fractions with mean annual precipitation (MAP)

View larger version (21K): [in a new window]   Fig. 3 Relationship between the ratios of fucose (fuc) plus rhamnose (rham) to arabinose (ara) plus xylose (xyl) in the clay fraction and mean annual temperature (MAT)