Matthew J. Cohen, Marie J. Kurz, James B. Heffernan, Jonathan B. Martin, Rachel L. Douglass, Chad R. Foster, Ray G. Thomas. (2013) Diel phosphorus variation and the stoichiometry of ecosystem metabolism in a large spring-fed river. Ecological Monographs 83:2, 155-176

Cohen, M.J., M.J. Kurz, J.B. Heffernan, J.B. Martin, R.L. Douglass, C.R. Foster and R.G. Thomas.  June 3-8, 2012.  Diel P Variation and the Stoichiometry of Ecosystem Metabolism in a Spring Fed River.  INTECOL Meeting, Orlando, FL.

Cohen, M.J., M.J. Kurz, J.B. Heffernan, J.B. Martin, R.L. Douglass, C.R. Foster and R.G. Thomas.  May 20-24, 2012.  Diel Phosphate Dynamics in a Spring-Fed River.  Society of Freshwater Science, Louisville, KY.

Heffernan, J.B., M.J. Cohen, T.K. Frazer, R.G. Thomas, T.J. Rayfield, J. Gulley, J.B. Martin, J.J.
Delfino, and W.D. Graham, “Hydrologic and biotic influences on nitrate removal in a subtropical spring-fed river”, Limnology and Oceanography, p. 249-263, vol. 55, (2010).

Martin, J.B., Thomas, R.G., Hartl, K.M., 2005, An inexpensive, submersible, automatic water sampler, Limnology and Oceanography, Methods, 2: 398-405.

Thomas, R.G., Guyodo, Y., Channell, J.E.T, 2003, “U channel track for susceptibility measurements” Geochemistry, Geophysics, Geosystems, doi: 1O.1O29/2002GCOO0454

Guyodo, Y., Channell J.E.T., Thomas, R., 2002, “Deconvolution of u-channel paleomagnetic data near geomagnetic reversals and short events.” Geophys. Res. Letters, 29,1845, doi:1O.1029/2002GLO14963

Thomas, R.G., Martin, J.B., Hartl, K., Patent #6,840,121 “Self-Powered Fluid Sampler” issued on January 11, 2005

Presentations and Posters:

American Water Resources Association (AWRA) 2008 Annual Conference, November 17-20, 2008, New Orleans, LA, “High-frequency in-situ nitrate measurements using commercial sensors based on flow-injection analysis and UV spectroscopy technology”, Travis Rayfield, Ray G. Thomas, Jason Gulley, J.J. Defino, Jonathan Martin, Matt Cohen, and Jim Heffernan

The Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI) Biennial Colloquium on Hydrologic Science and Engineering, July 14-16, 2008, Boulder, Colorado, “Design and demonstration of a distributed sensor array for predicting water flow and nitrate flux in the Santa Fe River Watershed”, W. Graham, M. Cohen, J. Delfino, C. Foster, J. Gulley, J. Heffernan, C. Krekeler, J. Martin, K. McKee, K. Nagarajan, T. Rayfield, C. Slatton, V. Srivastava, R. Thomas.

The Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI) Biennial Colloquium on Hydrologic Science and Engineering, July 14-16, 2008, Boulder, Colorado, “Hydrogeologic and biotic controls of solute flux in a spring-fed karst river”, James B. Heffernan, Matthew J. Cohen, Joseph Delfino, Ray G. Thomas, Wendy Graham, and Jonathan B. Martin.

“Interference of biogeochemical processes in lotic ecosystems from diel variations in nutrient concentrations”, 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec., J B Heffernan, M J Cohen, C R Foster, R G Thomas

“Continuous Ecosystem Stoichiometry (C:N:P) in a Large Spring-fed River Reveals Decoupled N and P Assimilatory Dynamics”, 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec., M J Cohen, R L Douglas, J B Martin, R G Thomas, J B Heffernan, C R Foster

“Dissolved organic carbon interferences in UV nitrate measurements and possible mitigation methods”, 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec., R G Thomas, C R Foster, M J Cohen, J B Martin, J J Delfino