Jackman, A P

The effect of Elodea canadenesis beds on porewater chemistry, microbial respiration and nutrient retention in the Shingobee River, Minnesota, North America

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Nutrients contributed by 'old' and 'new' groundwater to the Shingobee River, Minnesota, USA

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Bacterial biomass and productivity within different subsurface hydrologic environments of a sandy, low elevation river in north-central

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Inorganic nitrogen transformations in the bed of the Shingobee River, Minnesota - Integrating hydrologic and biological processes using sediment perfusion cores

Inorganic N transformations were examined in streambed sediments from the Shingobee River using sediment perfusion cores. The experimental design simulated groundwater–stream water mixing within sediment cores, which provided a well-defined one-dimensional representation of in situ hydrologic conditions. Two distinct hydrologic and chemical settings were preserved in the sediment cores: the lowermost sediments, perfused with groundwater, remained anaerobic during the incubations, whereas the uppermost sediments, perfused with oxic water pumped from the overlying water column, simulated stream water penetration into the bed. The maintenance of oxic and anoxic zones formed a biologically active aerobic-anaerobic interface....

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High and low flow nitrate distribution and its implications for nitrate retention in Navigation Pool 8, Upper Mississippi River (UMR), and in a high nitrate tributary, the Root River, USA

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