- Nitrate retention in riparian ground water at natural and elevated nitrate levels in north central MinnesotaJohn H Duff
U S Geological Survey, Water Resources Division, 345 Middlefield Road, MS 439, Menlo Park, CA 94025, USA
J Environ Qual 36:343-53. 2007..However, elevating NO(3)(-) levels through agricultural cultivation would likely result in increased NO(3)(-) transport to the channel...
- Whole-stream response to nitrate loading in three streams draining agricultural landscapesJohn H Duff
U S Geological Survey, Water Resources Div, 345 Middlefield Road, MS 439, Menlo Park, CA 94025, USA
J Environ Qual 37:1133-44. 2008....
- Identifying pathways and processes affecting nitrate and orthophosphate inputs to streams in agricultural watershedsAnthony J Tesoriero
U S Geological Survey, 2130 SW 5th Ave, Portland, OR 97201, USA
J Environ Qual 38:1892-900. 2009..While typically not the dominant source of OP, groundwater discharge was an important pathway of OP transport to streams when BFI values were very high and when geochemical conditions favored OP mobility in groundwater...