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Environmental Externalities from Agriculture: Evidence from Water Quality in the United States
, 2020Agricultural fertilizer use is widely acknowledged to be a leading cause of water pollution. Yet, no national estimates exist on the effect of fertilizer application on concentrations of agricultural pollutants in US watersheds.
Jayash Paudel, Christine Crago
semanticscholar +1 more source
Hydrologic and Sediment Transport Modeling of Agricultural Watersheds
Bridging the Gap, 2001Dealing with flooding, upland soil and streambank erosion, sedimentation, and contamination of water from agricultural, rural, and urban watersheds, and understanding the underlying natural processes are continued challenges to the environmental hydraulics field and in the management of sustainable water and environmental resources around the world ...
Deva K. Borah +2 more
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Hydrological controls on nutrient concentrations and fluxes in agricultural catchments
Science of The Total Environment, 2002Like many streams draining intensively farmed parts of lowland Scotland, water quality in the Newmills burn, Aberdeenshire, is characterized by relatively high nutrient levels; mean concentrations of NO3-N and NH3-N are 6.09 mg l(-1) and 0.28 mg l(-1), respectively, whilst average PO4-P concentrations reach 0.06 mg l(-1).
Chris Soulsby +3 more
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Agricultural modifications of hydrological flows create ecological surprises
Trends in Ecology & Evolution, 2008Agricultural expansion and intensification have altered the quantity and quality of global water flows. Research suggests that these changes have increased the risk of catastrophic ecosystem regime shifts. We identify and review evidence for agriculture-related regime shifts in three parts of the hydrological cycle: interactions between agriculture and
Garry D. Peterson +2 more
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Journal of Soil and Water Conservation, 2007
: Dense dendritic stream networks in the Tifton Upland (southeastern U.S. coastal plain) provide an opportunity to determine the effects of land management practices on individual farms on downstream hydrology and water quality.
R. Lowrance +7 more
semanticscholar +1 more source
: Dense dendritic stream networks in the Tifton Upland (southeastern U.S. coastal plain) provide an opportunity to determine the effects of land management practices on individual farms on downstream hydrology and water quality.
R. Lowrance +7 more
semanticscholar +1 more source
Nutrient Transport in an Agricultural Watershed as Affected By Hydrology
2003, Las Vegas, NV July 27-30, 2003, 2003Physical and chemical properties of nutrients combined with hydrological factors can dramatically affect nitrogen (N) and phosphorus (P) concentrations in and losses with streamflow from agricultural watersheds. In particular, adsorption and/or solubility of the different nutrient forms affect concentrations in subsurface drainage water, surface ...
Peter A. Lawlor +3 more
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Agriculture, Hydrology and Water Quality
, 2002Agriculture and catchment water quality soil and sediment transfers managing manures for water quality - problems and options catchment scale simulation of nitrate export carbon transfers from soil to water transfer of heavy metals from sewage sludge ...
P. Haygarth, S. Jarvis
semanticscholar +1 more source
Hydrologic and water quality impacts of agricultural drainage∗
Critical Reviews in Environmental Science and Technology, 1994While some of the world's most productive agriculture is on artificially drained soils, drainage is increasingly perceived as a major contributor to detrimental off‐site environmental impacts.
R. W. Skaggs, J. W. Gilliam, M. A. Breve
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New Research Directions in Agricultural Hydrology and Erosion
1989This paper addresses two rather contrasting areas of research that have developed rapidly during the last 10 years and that promise to have major impact on soil erosion control and agricultural hydrology.
Klaus W. Flach, John M. Laflen
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