Post Doctoral Researchers
Diana Karwan
Ph.D. - 2010, Yale University
Post-Doctoral Researcher, Stroud Water Research Center
Research Interests: I am interested in stream hydrology and biogeochemistry. More specifically, I study the cycling of suspended particles and dissolved matter in streams for which I use a series of hydrologic tracers and sediment fingerprinting techniques.
Olesya Lazareva
Ph.D. - 2010, University of South Florida,
Post Doctoral Researcher, Delaware Environmental Institute
Research Interests: Environmental and aqueous geochemistry,
hydrogeology, sustainability and environmental quality of water
resources. As a postdoctoral researcher I will be working on the
organic carbon - mineral complexation mechanisms.
Carl Rosier
Ph.D. - 2009, University of Montana
Post Doctoral Researcher, Delaware Environmental Institute
Research Interests:My research interest as a soil microbiologist is focused on investigating the interactions between soil aggregate dynamics and key soil processes including: i) microbial food webs, ii) carbon storage/release and iii) biochemical cycling. Soil aggregate formation and stabilization have long been hypothesized as influencing important ecosystem processes including: nutrient cycling and retention rates, mitigation of soil erosion, promotion of favorable water relations, and sequestration of atmospheric CO2. However, soil aggregation is often measured at a single time point upon completion of an experimental treatment; this greatly limits our ability to predict and model how a given soil will respond to disturbance or management decisions over time.. Recent advances in soil labeling, soil carbon characterization and molecular methods permit greater examination of soil aggregate dynamics in situ, however these studies have yet to come to fruition. My research efforts are an endeavor to provide greater understanding of the importance of aggregate dynamics and to assess their potential regulation on a number of soil and ecosystem processes.
Delaware Environmental Institute
Audrey Sawyer
Ph.D. - 2011, University of Texas-Austin
Post Doctoral Researcher, Delaware Environmental Institute
Research Interests: Quantifying surface water-groundwater interactions
in rivers and coastal settings to understand implications for solute
and heat transport. In particular, I am interested in dynamic
processes such as storms and tides that enhance surface
water-groundwater exchange.
