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J. Denis Newbold, Ph.D.

624 624 Stroud Water Research Center
Denis Newbold, Ph.D.

Research Scientist Emeritus

Ecosystem Processes Group

Contact

newbold@stroudcenter.org
tel. 610-268-2153, ext. 1227
970 Spencer Road, Avondale, PA 19311

Education

  • 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.

Publications

Contribution of dissolved organic carbon to stream metabolism estimated with 13C-enriched tree tissue leachate

Wiegner, T.N.,L.A. Kaplan, J.D. Newbold, and P.H. Ostrom. 2005. Journal North American Benthological Society 24:48–67.

Riparian deforestation, stream narrowing, and loss of stream ecosystem services

Sweeney, B.W., T.L. Bott, J.K. Jackson, L.A. Kaplan, J.D. Newbold, L.J. Standley, W.C. Hession, and R.J. Horwitz. 2004. Proceedings of the National Academy of Sciences 101(30):14132–14137.

Contributions of microbial biofilms to ecosystem processes in stream mesocosms

Battin, T.J., L.A. Kaplan, J.D. Newbold, and C.E. Hansen. 2003b. Nature 426:439–442.

Where rivers are born: the scientific imperative for defending small streams and wetlands

Meyer, J.L., L.A. Kaplan, J.D. Newbold, D.L. Strayer, C.J. Woltemade, J.B. Zedler, R. Beilfuss, Q. Carpenter, R. Semlitsch, M.C. Watzin, and P.H. Zedler. 2003. Published by Sierra Club and American Rivers.

Effects of current velocity on the nascent architecture of stream microbial biofilms

Battin, T.J., L.A. Kaplan, J.D. Newbold, X. Cheng, and C. Hansen. 2003c. Applied and Environmental Microbiology 63:5443–5452.

See all publications by Stroud Center authors