Type of Document Master's Thesis Author Klawiter, Kathryn Alyce Author's Email Address email@example.com URN etd-12498-14556 Title Copper Concentrations in Tidal Creeks and Estuaries of the Eastern Shore and the Relationship to Plasticulture and Copper-based Crop Protectants Degree Master of Science Department Civil Engineering Advisory Committee
Advisor Name Title Dietrich, Andrea M. Committee Chair Gallagher, Daniel L. Committee Member Simmons, George M. Jr. Committee Member Keywords
- Eastern Shore
Date of Defense 1998-02-09 Availability restricted AbstractThis project investigates the effect of plasticulture and
copper-based crop protectants on water quality on the
Eastern Shore of Virginia. Water and sediment copper
concentrations in both plasticulture and non-plasticulture
containing watersheds were measured to determine the scope
of copper in Eastern Shore tidal creeks. Runoff from a
variety of land-uses including agricultural,
plasticultural, residential and natural areas were
collected and measured for copper to determine where
copper-containing runoff originates.
Copper concentrations in plasticulture impacted tidal
creeks were higher than background (0 - 3 ug/L) only in
spikes, during or immediately after runoff-producing
rainfall events. These spikes registered as high as
263 ug/L total copper, or 127 ug/L dissolved copper.
Plasticulture and copper-based crop protectants were
affirmed as the cause of these spikes because control
watersheds indicated no high copper spikes.
Runoff from different land-uses verify that copper
is present in high concentrations only in runoff from
fields engaged in plasticulture and using copper-based
crop protectants. Sediment copper concentrations were
found to be within the natural range, but exhibited some
variability based on proximity to agricultural copper
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