I study how carbon and nutrients move through local lakes and reservoirs,
with a focus on how ecosystem characteristics influence the relative balance
among elements, and how that balance impacts ecosystem functioning. I am also
interested in better understanding aquatic food webs, including where energy
in food webs comes from, and what the eventual fate is. This work has real
world implications for understanding how lakes process, transport, and store
elements, and their roles in the global carbon and nutrient cycles.
I am currently involved in a number of projects looking at how fish serve as
nutrient transporters in lakes, how terrestrial resources influence lake and
food web productivity, and how climatic and land use changes alter nitrogen
and phosphorus transport in the watershed of an agricultural reservoir. While
most of this research is empirical, I am also interested in developing
mathematical models to explore watershed and ecosystem processes at a
I received my Ph.D. from the University of Notre Dame where I studied the
role of terrestrial dissolved organic carbon in shaping lake food webs, and
completed my M.S. from the University of Wisconsin – La Crosse where I
explored variability in aquatic insect emergence in the Upper Mississippi and
For any questions about my research or copies of my publications, please
visit my webpage (rhodeslimno.wixsite.com/home). You can also find me on
Kelly, P.T., M.J. Gonzalez, W.H. Renwick, and M.J. Vanni. 2018. Increased
light availability and nutrient cycling by fish provide resilience against
reversing eutrophication in an agriculturally impacted reservoir. Limnology &
Kelly, P.T., C.T. Solomon, J.A. Zwart, and S.E. Jones. 2018. A framework for
understanding variation in pelagic gross primary production of lake
Kelly, P.T., M.J. Vanni, and W.H. Renwick 2018. Assessing uncertainty in
nitrogen, phosphorus, and suspended sediment loads in three agricultural
streams using a 21-year dataset. Environmental Monitoring & Assessment.
Jones, S.E., J.A. Zwart, P.T. Kelly, C.T. Solomon. 2018. Hydrologic context
constrains lake heterotrophy and terrestrial carbon fate. Limnology &
Kelly, P.T., B. Weidel, M. Paufve, B. O’Malley, J. Watkins, L. Rudstam, and
S.E. Jones. 2017. Concentration and biochemical gradients of seston in Lake
Ontario. Journal of Great Lakes Research. 43:795-803.
Kelly, P.T., N. Craig, C.T. Solomon, B.C. Weidel, J.A. Zwart, and S.E. Jones.
2016. Experimental whole-lake increase of dissolved organic carbon
concentration produces unexpected increase in crustacean zooplankton density.
Global Change Biology. 22:2766-2775.
Kelly, P.T., C.T. Solomon, B.C. Weidel, and S.E. Jones. 2014. Terrestrial
carbon is a resource, but not a subsidy, for lake zooplankton. Ecology.