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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

Temporal dynamics of seston: a recurring nighttime peak and seasonal shifts in composition in a stream ecosystem

Richardson, D.C., L.A. Kaplan, J.D. Newbold, and A.K. Aufdenkampe. 2009. Limnology and Oceanography 54(1):344–354.

Water quality monitoring in the source water areas for New York City: an integrative watershed approach

Arscott, D.B., A.K. Aufdenkampe, T.L. Bott, C.L. Dow, J.K. Jackson, L.A. Kaplan, J.D. Newbold, and B.W. Sweeney. 2008. Final report on monitoring activities, 2000-2005. Stroud Water Research Center, Avondale, Pennsylvania.

Untangling the complex issue of dissolved organic carbon uptake: a stable isotope approach

Kaplan, L.A., T.N. Wiegner, J.D. Newbold, P.H. Ostrom, and H. Gandhi. 2008. Freshwater Biology 53:855–864.

Biophysical controls on organic carbon fluxes in fluvial networks

Battin, T.J., L.A. Kaplan, S. Findlay, C.S. Hopkinson, E. Marti, A.I. Packman, J.D. Newbold, and F. Sabater. 2008. Nature Geoscience 1:95–100.

Protecting headwaters: the scientific basis for safeguarding stream and river ecosystems

Kaplan, L.A., T.L. Bott, J.K. Jackson, J.D. Newbold, and B.W. Sweeney. 2008. Research synthesis from Stroud Water Research Center, Avondale, Pennsylvania.

See all publications by Stroud Center authors