Understanding plant residue decomposition by linking organic matter chemistry and soil microbiology

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Soils are an important source or sink for CO2. Currently we lack a fundamental understanding of plant residue decomposition and their transformation into various soil organic carbon (SOC) pools. Since these different pools of soil C are recycled back to atmosphere at different rates, a better understanding of the process is crucial for our ability to manage soil C and to predict the impact of management on SOC. For the first time we will combine detailed chemical analyses of soil organic matter fractions with determination of decomposition rates and microbial community structure; thereby also increasing the knowledge of how Australia's biodiversity is modulated.