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SOIL GRINDING INCREASES THE RELATIVE ABUNDANCE OF EUKARYOTIC PHOSPHOLIPID FATTY ACIDS

Building 203, E-133, Environmental Research Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4843

View larger version (18K): [in a new window]   Fig. 1. (A) Reciprocal averaging (RA) analysis on relative molar abundance of 10 common fatty acids, in restored or remnant prairie soil, either unground or ground. Outliers (samples more than two standard deviations from the mean) are indicated by asterisks, and the soil aliquot size from which they were extracted. (B) Average position of each fatty acid within the ordination space.

View larger version (28K): [in a new window]   Fig. 2. Abundance (±SD) of the 10 dominant fatty acids in soil of the (A) restored and (B) remnant prairie, when unground and ground. Asterisks indicate that means of ground and unground soils were significantly different, using a pooled variance t test (p 0.005).