Bioconcentration and Morphological Effects of Triclosan on Three Species of Wetland Plants

Bioconcentration and Morphological Effects of Triclosan on Three Species of Wetland Plants

Date: May 2013
Creator: Smith, Caleb M.
Description: Triclosan (TCS) is an antimicrobial compound found in several types of common household products. After being washed down the drain, TCS will then end up in the local watershed. Although numerous studies have been conducted to evaluate the fate and effects of TCS in aquatic environments, there have been no studies evaluating the role arbuscular mycorrhizal fungi (AM) play in a plants response to TCS exposure. Three species of wetland plants native North Texas were inoculated with AM spores and exposed to 0, 0.4 g/L and 4.0 g/L TCS concentrations. Root morphology of E. prostrata and S. herbacea showed AM and exposure responses. S. herbacea produced the greatest amounts biomass and TCS bioaccumulation, in all but one treatment. It also displayed opposing results to E. prostrata in measures of root length, root surface area, relative root mass, relative shoot mass and shoot:root ratio. TCS root tissue concentrations increased with increased exposures for both E. prostrata and S. herbacea. Even though E. prostrata had the lowest levels in each measure of biomass production, it had the highest amount of root TCS bioaccumulation in the AM inoculated 4.0 g/L treatment. H. laevis was between the other two species in terms of biomass ...
Contributing Partner: UNT Libraries
Wetland Issues

Wetland Issues

Date: September 1, 2000
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Water Resources Development Act (WRDA): Army Corps of Engineers Authorization Issues in the 109th Congress

Water Resources Development Act (WRDA): Army Corps of Engineers Authorization Issues in the 109th Congress

Date: April 24, 2006
Creator: Carter, Nicole T
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Wetlands Regulation and the Law of Property Rights "Takings"

Wetlands Regulation and the Law of Property Rights "Takings"

Date: February 17, 2000
Creator: Meltz, Robert
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Wetland Issues

Wetland Issues

Date: January 24, 2006
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: Instead of a single comprehensive federal wetland protection law, multiple laws provide varying levels of protection in different forms: the permit program authorized in §404 in the Clean Water Act; programs for agricultural wetlands; laws that protect specific sites; and laws that protect wetlands which perform certain functions. Many protection advocates view these laws and their implementation as inadequate or uncoordinated. Others, who advocate the rights of property owners and development interests, by contrast, characterize these efforts, especially the §404 permit program, as too intrusive. Numerous state and local wetland programs add to the complexity of the protection effort.
Contributing Partner: UNT Libraries Government Documents Department
Wetland Issues

Wetland Issues

Date: October 3, 2003
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: Instead of a single comprehensive federal wetland protection law, multiple laws provide varying levels of protection in different forms: the permit program authorized in §404 in the Clean Water Act; programs for agricultural wetlands; laws that protect specific sites; and laws that protect wetlands which perform certain functions. Many protection advocates view these laws and their implementation as inadequate or uncoordinated. Others, who advocate the rights of property owners and development interests, by contrast, characterize these efforts, especially the §404 permit program, as too intrusive. Numerous state and local wetland programs add to the complexity of the protection effort.
Contributing Partner: UNT Libraries Government Documents Department
Wetland Issues

Wetland Issues

Date: June 4, 2003
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: Instead of a single comprehensive federal wetland protection law, multiple laws provide varying levels of protection in different forms: the permit program authorized in §404 in the Clean Water Act; programs for agricultural wetlands; laws that protect specific sites; and laws that protect wetlands which perform certain functions. Many protection advocates view these laws and their implementation as inadequate or uncoordinated. Others, who advocate the rights of property owners and development interests, by contrast, characterize these efforts, especially the §404 permit program, as too intrusive. Numerous state and local wetland programs add to the complexity of the protection effort.
Contributing Partner: UNT Libraries Government Documents Department
Wetland Issues

Wetland Issues

Date: April 11, 2003
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: Instead of a single comprehensive federal wetland protection law, multiple laws provide varying levels of protection in different forms: the permit program authorized in §404 in the Clean Water Act; programs for agricultural wetlands; laws that protect specific sites; and laws that protect wetlands which perform certain functions. Many protection advocates view these laws and their implementation as inadequate or uncoordinated. Others, who advocate the rights of property owners and development interests, by contrast, characterize these efforts, especially the §404 permit program, as too intrusive. Numerous state and local wetland programs add to the complexity of the protection effort.
Contributing Partner: UNT Libraries Government Documents Department
Wetland Issues

Wetland Issues

Date: August 28, 2003
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: Instead of a single comprehensive federal wetland protection law, multiple laws provide varying levels of protection in different forms: the permit program authorized in §404 in the Clean Water Act; programs for agricultural wetlands; laws that protect specific sites; and laws that protect wetlands which perform certain functions. Many protection advocates view these laws and their implementation as inadequate or uncoordinated. Others, who advocate the rights of property owners and development interests, by contrast, characterize these efforts, especially the §404 permit program, as too intrusive. Numerous state and local wetland programs add to the complexity of the protection effort.
Contributing Partner: UNT Libraries Government Documents Department
Wetland Issues

Wetland Issues

Date: July 18, 2003
Creator: Zinn, Jeffrey A & Copeland, Claudia
Description: Instead of a single comprehensive federal wetland protection law, multiple laws provide varying levels of protection in different forms: the permit program authorized in §404 in the Clean Water Act; programs for agricultural wetlands; laws that protect specific sites; and laws that protect wetlands which perform certain functions. Many protection advocates view these laws and their implementation as inadequate or uncoordinated. Others, who advocate the rights of property owners and development interests, by contrast, characterize these efforts, especially the §404 permit program, as too intrusive. Numerous state and local wetland programs add to the complexity of the protection effort.
Contributing Partner: UNT Libraries Government Documents Department
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