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We studied how soil pH (pHs 4 to 8) influenced the mineralization of low-molecular-weight (LMW)-dissolved organic carbon (DOC) compounds, and how this compared with differences in microbial community structure. The mineralization of LMW-DOC compounds was not systematically connected to differences in soil pH, consistent with soil respiration. In contrast, the microbial community compositions differed dramatically. This suggests that microbial community composition data will be of limited use in improving the predictive power of soil C models.


  • Ecosystem, Hydrogen-Ion Concentration, Molecular Weight, Organic Chemicals/metabolism, Soil/chemistry, Soil Microbiology
Original languageEnglish
Pages (from-to)2791-5
Number of pages5
JournalApplied and Environmental Microbiology
Issue number8
Publication statusPublished - 1 Apr 2011
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