Date Approved
2018
Degree Type
Open Access Thesis
Degree Name
Master of Science (MS)
Department or School
Biology
Committee Member
Kristin E. Judd, PhD
Committee Member
Steven N. Francoeur, PhD
Committee Member
Katherine R. Greenwald, PhD
Abstract
Deicing salt runoff has negative effects on ecosystems. Wetland ecosystems can act as important filters for runoff pollution (e.g., nutrients), mitigating damage to plants and microbes. Wetlands are important sinks for nutrients and pollutants (e.g., road salt) and transformation spots for many nutrients including carbon. The interactions between deicing salt runoff and wetland soil carbon were explored by measuring chloride export and retention, dissolved organic carbon (DOC) export, and carbon quality using mesocosm experiments. Net retention of Cl- was highest in soils receiving high salt treatments (5.0 g/L NaCl), although percent retention of Cl- was greater in soils receiving moderate salt treatments (2.5 g/L NaCl), indicating a retention cap for Cl-. The export of DOC was significantly lower upon addition of salt for two of three wetland sites. The quality of carbon exported was not affected by salt addition. The storage of salt found could further alter the biogeochemistry of wetland ecosystems.
Recommended Citation
McGuire, Kayla Marie, "Salt retention in wetland soils and effects on dissolved organic carbon export" (2018). Master's Theses and Doctoral Dissertations. 918.
https://commons.emich.edu/theses/918
Included in
Biology Commons, Ecology and Evolutionary Biology Commons, Environmental Sciences Commons