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Research

 

Ameriflux Core Site Project

Much of our research is conducted in close assocation with the AmeriFlux network of research facilities distributed across the Americas. We operate one of the Core AmeriFlux sites supported by the U.S. Department of Energy through the Lawrence Berkeley National Laboratory (LBL). 

Visit Ohio State's Ameriflux Core Site Project website for more information about Ohio State's Olentangy River Wetland Research Park, the University of Michigan Biological Station and the Old Woman Creek Wetland.

 

 

Animal Movement - Movebank-Env-DATA

We combine knowledge of environmental science, atmospheric and ecological modeling, and remote sensing data analysis to develop Env-DATA - an advanced tool for analysis of animal movement, part of Movebank.org

We continue to collaborate with movement researchers and innovate approaches for movement data analysis, modeling and data sharing. See for example our study about Zebra migration. And the Arctic Animal Movement Archive.

Wetland Hydrodynamics, Greenhouse Gas Budgets and Transport Through Plants

We are working in Old Woman Creek National Estuarine Research Reserve to study how the hydrology and hydrodynamics of the wetland affect the greenhouse gas budgets and sequestration rates. We are particularly interested in elucidating the role that small-scale vegetation patches of different types have on methane transport and microbial methane processes. We provided quantitative evidence of the methane paradox – showing methane production under bulk aerobic conditions in shallow wetland patches. We provided direct measurements of the seasonal dynamics of conductivity to methane flow through plants of different species. We developed an approach to correct for the changing footprint of eddy covariance flux measurements in heterogeneous wetlands (they all are) by combining EC flux and chamber flux measurements with remote sensed vegetation patch map and a footprint model. Our flux observations are available through Ameriflux, and chamber and porewater gas-concentration measurements are available through ESS-DiVE. We also worked in riverine and bog sites.

Hydrodynamic controls of transpiration from trees

We have installed a long-term sap flow and tree water content measurements array in hundreds of trees at the US-UMB and US-UMd flux sites’ footprints. EC, meteorological, soil moisture and tree hydrodynamics data is combined to improve understanding of the controls of stomata conductance. We focus on understanding the inter-species differences in stomata control strategies, response to water stress, and drought recovery. We developed the FETCH hydrodynamic modeling approach, the FETCH2 model and in the process of implementing FETCH formulation in hydrodynamic-vegetation modules in other earth system models.

 

Vegetation effects on air quality and aerosol transport 

We are working around agricultural facilities (CAFOs) and hydro fracking sites to observe and model dispersion of PM, methane and other scalars. We particularly study the effects of vegetation on downwind dispersion plum concentrations.