Wilfred Wollheim
Assistant Professor, Earth Systems Research Center and Department of Natural Resources and the Environment
Dr. Wollheim joined the Water Systems Analysis Group in 1999 and currently serves as a Co-Director. He has been jointly appointed as Assistant Professor in
the Department of Natural Resources and Environment since 2010.
Research Interests
The focus of Wil's research is on how river networks control the flux of nutrients and carbon in response to changes in land use, climate change,
and hydrological engineering. To address this question, Wil uses field observations, field experiments, and modeling over a range of scales from
headwater catchments, to moderately sized (~100-1000 km2) watersheds, to the global system of rivers, lakes, and reservoirs. Wil believes that a better
understanding of river network dynamics will help to address issues of coastal eutrophication, freshwater quality and the fate of anthropogenic carbon.
Curriculum Vitae
A pdf version of Wil's curriculum vitae is available here.
Selected Publications
Wollheim, W.M., B.J. Peterson, C.J. Vorosmarty, C. Hopkinson, and S.A. Thomas (2008). Dynamics of N removal over annual time scales in a suburban river network. Journal of Geophysical Research - Biogeosciences. G03038, doi:10.1029/2007JG000660.
Wollheim, W.M., C.J. Vorosmarty, A.F. Bouwman, P.A. Green, J. Harrison, E. Linder, B.J. Peterson, S. Seitzinger, and J.P.M. Syvitski (2008). Global N removal by freshwater aquatic systems: A spatially distributed, within-basin approach. Global Biogeochemical Cycles. GB2026, doi:10.1029/2007GB002963.
Wollheim, W.M., C.J. Vorosmarty, B.J. Peterson, S.P. Seitzinger, and C.S. Hopkinson (2006). Relationship between river size and nutrient removal. Geophysical Research Letters 33, L06410.
Wollheim, W.M., B.A. Pellerin, C.J. Vorosmarty, and C.S. Hopkinson (2005). N retention in urbanizing headwater catchments. Ecosystems 8:871-884.
Wollheim, W.M., B.J. Peterson, L.A. Deegan, J.E. Hobbie, B. Hooker, W.B. Bowden, K.J. Edwardson, D.B. Arscott, and A.E. Hershey (2001). Influence of stream size on ammonium and suspended particulate nitrogen processing. Limnology and Oceanography 46:1-13.
Alexander, R.B., J.F. Bohlke, E.W. Boyer, M. David, J.W. Harvey, P.J. Mulholland, S.P. Seitzinger, C.R. Tobias, C. Tonitto, and W.M. Wollheim. Annually and Seasonally Varying Effects of Denitrification on Riverine Nitrogen Transport. Biogeochemistry, in Press.
Harrison, J., R. Maranger, R.B. Alexander, J. Cornwell, A. Giblin, P. Jacinthe, E. Mayorga, S. Seitzinger, W.M. Wollheim. The Regional and Global Significance of Reactive N Removal in Lakes and Reservoirs. Biogeochemistry, in Press.
Pellerin, B.A., W.M. Wollheim, X. Feng, and C.J. Vorosmarty (2007). The Application of Electrical Conductivity as a Tracer for Hydrograph Separation in Urban Catchments. Hydrological Processess, Online 10.1002/hyp.6786.
Research Projects
2010-2013 - EPA-STAR: Consequences of Global Change on Water Quality. Impact of Climate Change and Variability on the Nation's Water Quality and Ecosystem State, with C. Vorosmarty and L. Poff.
2009-2013 - NASA-NEWS. Tracking Dissolved Organic Carbon and Its Absorption Characteristics along the Aquatic Continuum over Time using a Remote Sensing Based Approach. Lead PI with J. Salisbury and G. Aiken.
2009-2012 - NSF-CSAS. Collaborative Research: How does Changing Seasonality Affect the Capacity of Arctic Stream Networks to Influence Nutrient Fluxes from the Landscape to the Ocean?, with B. Bowden and M. Gooseff.
2007-2011 - NSF-DEB: Coupled Human Natural Systems. Suburbanization, Water-Use, Nitrogen Cycling and Eutrophication in the 21st Century: Interactions, Feedbacks and Uncertainties in a Massachusetts Coastal Zone, with C. Polsky, C. Hopkinson, G. Pontius, and C. Vorosmarty.
2004-2010 - NSF-LTER. Plum Island Sound Comparative Ecosystem Study. Lead PI at UNH, with A. Giblin, C. Hopkinson, B. Peterson, L. Deegan, J. Vallino, and J. Morris.
2006-2009 - NSF-DEB-Ecosystems. Collaborative Research: Understanding the Scaling of N Cycle Controls throughout a River Network, with C. Vorosmarty, B. Peterson, C. Hopkinson, and M. Gooseff.