Title page for ETD etd-12498-14556

Type of Document Master's Thesis
Author Klawiter, Kathryn Alyce
Author's Email Address kklawite@vt.edu
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
  • pesticides
  • Eastern Shore
  • copper
  • aquaculture
  • plasticulture
Date of Defense 1998-02-09
Availability restricted
This 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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[VT] abstract.pdf 16.76 Kb 00:00:04 00:00:02 00:00:02 00:00:01 < 00:00:01
[VT] append.pdf 95.76 Kb 00:00:26 00:00:13 00:00:11 00:00:05 < 00:00:01
[VT] DISCUSS.PDF 43.07 Kb 00:00:11 00:00:06 00:00:05 00:00:02 < 00:00:01
[VT] intro.pdf 1.42 Mb 00:06:33 00:03:22 00:02:57 00:01:28 00:00:07
[VT] litrev.pdf 74.10 Kb 00:00:20 00:00:10 00:00:09 00:00:04 < 00:00:01
[VT] METHODS.PDF 174.10 Kb 00:00:48 00:00:24 00:00:21 00:00:10 < 00:00:01
[VT] results1.pdf 67.64 Kb 00:00:18 00:00:09 00:00:08 00:00:04 < 00:00:01
[VT] results2.pdf 61.31 Kb 00:00:17 00:00:08 00:00:07 00:00:03 < 00:00:01
[VT] results3.pdf 84.17 Kb 00:00:23 00:00:12 00:00:10 00:00:05 < 00:00:01
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