{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/46475"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/46475","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Copper Concentrations in Tidal Creeks and Estuaries of the Eastern Shore and the Relationship to Plasticulture and Copper-based Crop Protectants","abstract":"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 inputs.","abstract_html":"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 inputs.","abstract_has_math":false,"creators":["Klawiter, Kathryn Alyce"],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Civil Engineering","degree_department":"Civil Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":["Dietrich, Andrea M."],"committee_members":["Simmons, George M. Jr.","Gallagher, Daniel L."],"year":1998,"date_issued":"1998-02-09","date_published":"1998-02-09","updated_at":"2026-07-22T22:19:37Z","subjects":["pesticides","Eastern Shore","copper","aquaculture","plasticulture"],"languages":[],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-12498-14556"],"render_values":[{"text":"etd-12498-14556","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/46475","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Dietrich, Andrea M."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Simmons, George M. Jr.","Gallagher, Daniel L."]},{"key":"dc:contributor.department","label":"Department","values":["Civil Engineering"]},{"key":"dc:creator","label":"Author","values":["Klawiter, Kathryn Alyce"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-03-14T21:52:52Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-03-14T21:52:52Z","1999-02-26"]},{"key":"dc:date.issued","label":"Date","values":["1998-02-09"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["pesticides","Eastern Shore","copper","aquaculture","plasticulture"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-12498-14556"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/46475"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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 inputs."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:title","label":"Title","values":["Copper Concentrations in Tidal Creeks and Estuaries of the Eastern Shore and the Relationship to Plasticulture and Copper-based Crop Protectants"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Dietrich, Andrea M."],"dc:contributor.committeemember":["Simmons, George M. Jr.","Gallagher, Daniel L."],"dc:contributor.department":["Civil Engineering"],"dc:creator":["Klawiter, Kathryn Alyce"],"dc:date.accessioned":["2014-03-14T21:52:52Z"],"dc:date.available":["2014-03-14T21:52:52Z","1999-02-26"],"dc:date.issued":["1998-02-09"],"dc:description.abstract":["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 inputs."],"dc:description.degree":["Master of Science"],"dc:identifier.other":["etd-12498-14556"],"dc:identifier.uri":["http://hdl.handle.net/10919/46475"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["pesticides","Eastern Shore","copper","aquaculture","plasticulture"],"dc:title":["Copper Concentrations in Tidal Creeks and Estuaries of the Eastern Shore and the Relationship to Plasticulture and Copper-based Crop Protectants"],"dc:type":["Thesis"],"thesis:degree_discipline":["Civil Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:19:37Z"}