Uptake and release of phosphorus from overland flow in a stream environment.

@article{McDowell2003UptakeAR,
  title={Uptake and release of phosphorus from overland flow in a stream environment.},
  author={Richard W. McDowell and Andrew N. Sharpley},
  journal={Journal of environmental quality},
  year={2003},
  volume={32 3},
  pages={937-48}
}
Phosphorus runoff from agricultural fields has been linked to fresh-water eutrophication. However, edge-of-field P losses can be modified by benthic sediments during stream flow by physiochemical processes associated with Al, Fe, and Ca, and by biological assimilation. We investigated fluvial P when exposed to stream-bed sediments (top 3 cm) collected from seven sites representing forested and agricultural areas (pasture and cultivated), in a mixed-land-use watershed. Sediment was placed in a… CONTINUE READING
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