Postdoctoral Researchers

Pam Barrett


Pam is now a postdoctoral researcher at The Australian National University studying trace element and isotope cycling in the ocean. She was trained as a chemical oceanographer, but as a member of the Hydro-biogeochemistry group (fall 2015 to spring 2018) she worked in freshwater systems investigating arsenic mobility and bioaccumulation in impacted urban lakes.


Colby Moorberg

Colby is now an Assistant Professor in the Department of Agronomy at Kansas State University. He is a soil scientist with interest in soil-root interactions. Colby joined the Hydro-biogeochemistry group as a postdoctoral researcher from January of 2014 to January 2015 to investigate effect of plant roots on methane oxidation in boreal wetlands in Alaska. Contact: website

Javier Espeleta

Javier is now a consultant in Costa Rica. He joined the Hydro-biogeochemistry group from January 2013 to August 2015. He investigated how plant hydraulic redistribution of water and nighttime transpiration influences nutrient cycling in the soil zone surrounding plant roots (i.e., the rhizosphere).

Graduate Students

Lara Pracht

Lara Pracht completed her PhD in November 2016 and is now a Laboratory Resource Coordinator at Oregon Institute of Technology. Her thesis was titled, "Arsenic contaminated groundwater: exploration of the role of organic carbon in mobilization processes and evaluation of mechanisms of arsenic sequestration by in situ treatment systems." 

Farnaz Aslkhodapasand

Farnaz completed her master's degree in November 2016 and is now a Staff Water Resources Engineer at Cardno. Her thesis was titled, "Integration of dynamic rhizospheric methane oxidation into a process-based methane emissions model."

Andrea Wong

Andrea now works for King County mapping stormwater. She was involved with field efforts researching the effects of plants on methane emissions from Alaskan wetlands while working towards her non-thesis based MSCE degree, which she completed in 2016. 

Margret Hoing


Maggie worked in the lab in 2018, helping to analyze soil and rice grain samples, when she was a graduate student at UW pursuing a non-thesis based MSCE degree.

Lab Technicians

Olivia Hargrave

Olivia joined the Hydro-biogeochemistry group in June 2016 as a Civil and Environmental Engineering undergraduate, and she continued working in the group after graduation as a laboratory technician. She left in 2018 to work as a consultant for Integral Consulting Inc. 

Jesse Turner


Jesse joined the hydro-biogeochemistry group in summer of 2016 after graduating from UW as an undergraduate. He spent the summer in Alaska collecting data on the relationship between climate change and methane emissions in wetlands and spent the following 9 months in Seattle analyzing the field data. He is now working for SMRU consulting.

Jen Teshera-Levye

Jen was a research technician in the hydro-biogeochemistry group for two years. She left in 2013 to pursue a PhD at the University of Minnesota in the Department of Ecology, Evolution and Behavior.

Undergraduate Students

Alex Ratcliff


Alex is an undergraduate pursuing a B.S. in Environmental Engineering and a minor in Applied Mathematics. He was a member of Hydro-biogeochemistry research group during his junior year  (June 2017 to June 2018). Alex is passionate about the environment and is extremely interested in the application of biomimicry to environmental sustainability.



Teresa Wang


Teresa joined the Hydro-biogeochemistry group in spring 2017 and helped in the greenhouse with rice growth experiments until she graduated from UW in 2018 with a BS in Environmental Science and Resource Management as well as a minor in Architecture and minor in Urban Ecological Design. 



Jonathan McLean


Jonathan worked on the arsenic in urban lakes project while a member of the Hydro-biogeochemistry group from spring 2017 to spring 2018 when he graduated from UW for a degree in Aquatics and Fisheries Science and minor in Marine Biology.


Maddie Hubbard


Maddie joined the Hydro-biogeochemistry group as Civil and Environmental Engineering undergraduate in June of 2016 and left in summer 2017 to pursue a graduate degree at Portland State University.  While in the group, Maddie work on a number of different research projects. 

Bobby Ardissono

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Bobby worked in the lab on various different research projects from 2014 to 2017 while pursuing his B.S. in Civil Engineering. He is now in the Peace Corps serving in Panema. 


Brianna Hunt

Brianna is an environmental consultant in the Seattle area. She worked in the Hydro-biogeochemistry group on the Wetland Methane project during her senior year as a geology and anthropology major. 

Joe Ellingson

Joe received his B.S. in Civil Engineering in 2014 and is now an environmental engineer in the Seattle area. He worked as an assistant on multiple research projects in the lab during his junior and senior year of undergrad.

Hunter Brown

Hunter Brown received his B.S. in Civil Engineering in 2013. He now works as an environmental engineer in the Seattle area. He worked in the Hydro-biogeochemistry group as a research assistant during his senior year of undergrad and for an additional six months post graduation. He focused on the design and construction of sediment test columns, as well as calculating experiment parameters, to analyze the capacity and removal mechanisms of a PRB, to remove arsenic from contaminated groundwater

Alex Fussell


Alex worked in the Hydro-biogeochemistry group as an undergraduate researcher during the 2011-2012 academic year. She received her B.S. degree in Civil and Environmental Engineering is now employed as an environmental engineer in a local engineering firm.