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Groundwater Nutrient Discharge to the Chesapeake Bay: Effects of Near-Shore Land Use Practices
Libelo, E. Laurence MacIntyre, William G. Johnson, Gerald H.
Libelo, E. Laurence
MacIntyre, William G.
Johnson, Gerald H.
Abstract
Groundwater discharge supplies a significant portion of the inorganic nutrients entering the Chesapeake Bay. This discharge increases nutrient concentration in surface waters, which may result in increased macrophyte growth, reductions in· submerged aquatic vegetation and alteration of habitat. Human activities adjacent to the shoreline greatly increase nutrient concentration in the underlying groundwater, and so affect the overall nutrient input by groundwater seepage. In order to quantify the effect of land use on groundwater nutrient loading in the Virginia coastal plain we have installed monitoring wells in a variety of near shore environments adjacent to the James and York Rivers. Since the Spring of 1988, groundwater nitrogen species concentrations have been monitored beneath agricultural fields planted with corn and soy beans, woodlands, vineyards, and suburban development with septic drain fields. (...)
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1991
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Chesapeake Research Consortium
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crc137_MacIntyre.pdf
Adobe PDF, 632.56 KB
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Virginia Institute of Marine Science