J. Denis Newbold, Ph.D.

624 624 Stroud Water Research Center

Research Scientist Emeritus

Ecosystem Processes Group

tel. 610-268-2153, ext. 227
970 Spencer Road, Avondale, PA 19311


  • Ph.D., Aquatic Ecology, University of California, Berkeley, California.
  • M.S., Hydrology, Cornell University, Ithaca, New York.
  • B.S., Engineering, Swarthmore College, Swarthmore, Pennsylvania.

Interests and Expertise

The flow of nutrients (primarily nitrogen, phosphorus, and carbon) to streams and rivers and how those nutrients are processed, transformed, and transported by the stream and river ecosystem.

Professional Experience

  • Research Scientist Emeritus, Stroud Water Research Center, 2011–present.
  • Research Scientist, Stroud Water Research Center, 1993–2011.
  • Assistant Curator, Stroud Water Research Center of the Academy of Natural Sciences of Philadelphia, 1985–1992.
  • Ruth Patrick Scholar, Stroud Water Research Center, Division of Environmental Research, Academy of Natural Sciences of Philadelphia. 1983–1985.
  • Research Staff Member, Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 1982–1983.
  • Research Associate, Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 1977–1982.
  • Eugene P. Wigner Postdoctoral Fellow, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 1977–1979.


Abandoned coal mine drainage and its remediation: impacts on stream ecosystem structure and function

Bott, T.L., J.K. Jackson, M. McTammany, J.D. Newbold, S. Rier, B.W. Sweeney, and J. Battle. 2012. Ecological Applications 22:2144–2163.

Estimation of dissolved organic carbon contribution from hillslope soils to a headwater stream

Mei, Y., G.M. Hornberger, L.A. Kaplan, J.D. Newbold, and A.K. Aufdenkampe. 2012. Water Resources Research 48(9):W09514.

Turbulent particle transport in streams: can exponential settling be reconciled with fluid mechanics?

McNair, J.N., and J.D. Newbold. 2012. Journal of Theoretical Biology 300:62–80.

Scaling the gas transfer velocity and hydraulic geometry in streams and small rivers

Raymond, P.A., C.J. Zappa, D. Butman, T.L. Bott, C. Potter, P. Mulholland, A.E. Laursen, W.H. McDowell, and D. Newbold. 2012. Limnology and Oceanography: Fluids and Environments 2:41–53.

Sustained losses of bioavailable nitrogen from montane tropical forests

Brookshire, E.N.J., L.O. Hedin, J.D. Newbold, D.M. Sigman, and J.K. Jackson. 2012. Nature Geoscience 5:123–126.

See all publications by Stroud Center authors