Bulk Humin - CLU-IN

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Density Fractionation of SOM Simplifying SOM Fractionation Density Separation Light Fraction Heavy Fraction Labile C Fast C cycling <strong>Bulk</strong> Sediment CsCl Occluded Light Fraction More degraded; recalcitrant due to microbial degradation of Light Fraction Sonication Heavy Fraction Fast C cycling pools Slow C cycling pools Plant Carbon PAH (Swanston et al., 2004)
Density Fractionation of SOM Fractions that are more ecologically-relevant Density Separation <strong>Bulk</strong> Sediment Light Fraction Heavy Fraction Younger ( 14 C); Fast C turnover CsCl Occluded Light Fraction Sonication Heavy Fraction Older ( 14C) Slower C turnover C sequestration Plant Carbon PAH
Page 1 and 2: Tools to Assess Plant C and PAH C C
Page 3 and 4: Rhizosphere mechanisms that alter o
Page 5 and 6: Tools for OM Characterization • C
Page 7 and 8: Modern Plant Carbon and Petroleum C
Page 9 and 10: Fractionation Methods to Improve C
Page 11 and 12: Changes to OM Composition Character
Page 13 and 14: [PAH] relative to OM changes Plant
Page 15 and 16: Other Indices for PAH Attenuation
Page 17 and 18: PAH Attenuation Weathering Indices
Page 19: For Humic Fractionations… • Pla
Page 23 and 24: OM Changes in Density Fractions Gas
Page 25 and 26: N0 N0 N0 BP BP BP ACL ACL ACL ACE A
Page 27 and 28: PAH Attenuation in Density Fraction
Page 29 and 30: For Density Fractions… • Plant-
Page 31: Future Directions… • Can 14C PM

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