James Waples

James Waples

  • Associate Professor, School of Freshwater Sciences


  • PhD, Biogeochemistry, University of Wisconsin-Milwaukee, 1998
  • BSc, Zoology, University of Wisconsin-Madison, 1985

Research Interests

  • Radionuclide tracers in freshwater systems
  • Biogeochemistry

Recent and Selected Publications

Reid, R. E. B., J. T. Waples, D. A. Jensen, C. E. Edwards, and X. Liu. 2022. Climate and vegetation and their impact on stable C and N isotope ratios in bat guano. Frontiers in Ecology and Evolution 10:929220 https://doi.org/10.3389/fevo.2022.929220

Waples, J. T. 2022. Bismuth-210, its parent, and daughter and their use as particle tracers in aquatic systems. Marine Chemistry 239: 1-8 https://doi.org/10.1016/j.marchem.2021.104072

Waples, J. T. 2020. Measuring bismuth-210, its parent, and daughter in aquatic systems. Limnology & Oceanography: Methods 18: 148 – 162. https://doi.org/10.1002/lom3.10352

Zorn, M. E., J. T. Waples, T. Valenta, J. A. Kennedy, J. V. Klump. 2018. In situ, high resolution time-series of dissolved phosphate in Green Bay, Lake Michigan. Journal of Great Lakes Research 44: 875 – 882. https://doi.org/10.1016/j.jglr.2018.07.008

Montenero, M. P., Dilbone, E. K., Waples, J. T. 2017. Using medically-derived iodine-131 to track sewage effluent in the Laurentian Great Lakes. Water Research 123: 773-782.

Montenero, M. P., Dilbone, E. K., Waples, J. T. 2017. The removal of particle-reactive radionuclides in shallow water: Bottom scavenging versus particle settling of iodine-131 and beryllium-7. Journal of Environmental Radioactivity 177: 128-134.

Waples, J. T., H. A. Bootsma, and J. V. Klump. 2017. How are coastal benthos fed? Limnology & Oceanography: Letters 2: 18-28.

Bravo, H. R., S. A. Hamidi, J. T. Waples, and J. V. Klump. 2016. Modeling multiple physical drivers of the circulation and thermal regimes impacting seasonal hypoxia in Green Bay, Lake Michigan. In Justic, D., K. A. Rose, R. D. Hetland, and K. Fennel (Ed.), Modeling Coastal Hypoxia: Numerical Simulations of Patterns, Controls and Effects of Dissolved Oxygen Dynamics. New York, NY: Springer. (in press)

Waples J. T. 2015. Particle delivery to the benthos of coastal Lake Michigan. Journal of Geophysical Research: Oceans 120(12): 8238-8250.

Waples, J. T., J. K. Bordewyk, K. M. Knesting, and K. A. Orlandini. 2015. Using naturally occurring radionuclides to determine drinking water age in a community water system. Environmental Science & Technology 49(16): 9850-9857.

Hamidi, S. A., H. R. Bravo, J. V. Klump, and J. T. Waples. 2015. The role of circulation and heat fluxes in the formulation of stratification leading to hypoxia in Green Bay, Lake Michigan. Journal of Great Lakes Research doi:10.1016/j.jglr.2015.08.007.

Waples J. T. and J. V. Klump. 2013. Vertical and horizontal particle transport in the coastal waters of a large lake: an assessment by sediment trap and thorium-234 measurements. Journal of Geophysical Research: Oceans 118: 5376-5397 DOI: 10.1002/jgrc.20394.

Maiti, K., K.O. Buesseler, S.M. Pike, C. Benitez-Nelson, P. Cai, W. Chen, K. Cochran, M. Dai, F. Dehairs, B. Gasser, R.P. Kelly, P. Masque, L. Miller, J.C. Miquel, S.B. Moran, P. Morris, F. Peine, F. Planchon, A.A. Renfro, M. Rutgers van der Loeff, P. Santschi, R. Turnewitsch, J.T. Waples, and C. Xu. 2012. Intercalibration studies of short lived thorium-234 in the water column and marine particles. Limnology & Oceanography: Methods 10:631-644.

Waples J. T. and K. A. Orlandini. 2010. A method for the sequential measurement of yttrium-90 and thorium-234 and their application to the study of rapid particle dynamics in aquatic systems. Limnology & Oceanography: Methods 8: 661-677.