Our research focuses on the biogeochemistry of dissolved organic matter – a complex mixture of organic molecules deriving from fresh biomass, detritus, charred residues, and anthropogenic sources. Since dissolved organic matter is mobilized by water and is comprised of 50% carbon by mass, it plays an integral role in connecting terrestrial and oceanic carbon reservoirs and in regulating ecosystem structure and function. We specialize in the study of black carbon, the thermogenic fraction of organic matter that has a condensed aromatic molecular structure, is biologically inert, and persists in the environment for millennia. Our research program combines different geochemical techniques to constrain the role of dissolved organic matter and black carbon in a modern Earth system that is altered by anthropogenic activity and continued climate change.
If you are interested in joining our lab or learning more about the research we do, please visit our lab website or contact me at the email listed below.
PhD in Environmental Chemistry, Florida International University, 2015
BS in Biochemistry, University of Delaware, 2009
- organic geochemistry
- aquatic carbon cycling
- dissolved organic matter
- black carbon
The following is a selection of recent publications in Scopus. Sasha Wagner has 27 indexed publications in the subjects of Environmental Science, Earth and Planetary Sciences, and Agricultural and Biological Sciences.