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Biogeochemistry Laboratory

The laboratory focuses on the transformations of C, P, and Fe on the gradient of settling seston – i.e. sediment diagenesis; the role of the different electron acceptors in the particle-associated C, P, Fe cycling; the fate of bioavailable Fe in reservoirs; and the overall methane emission from temperate reservoirs. We describe in-situ sediment properties and use […]

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The laboratory focuses on the transformations of C, P, and Fe on the gradient of settling seston – i.e. sediment diagenesis; the role of the different electron acceptors in the particle-associated C, P, Fe cycling; the fate of bioavailable Fe in reservoirs; and the overall methane emission from temperate reservoirs. We describe in-situ sediment properties and use short-term settling seston traps to sample the “particulate” material sedimenting in the water column. Sediment/particle biogeochemical properties are described by either specific extraction methods or direct compound analyses using LC-ICP-QQQ, GC, LC, or IRMS instruments.