Education
| M.S. |
1980 |
Idaho State University |
Zoology |
| B.A. |
1973 |
Amherst College |
Biology |
Professional Interests
My research focuses on the structure and dynamics of aquatic ecosystems, primarily streams and rivers in arid lands. I study temperature dynamics, material transport, nutrient assimilation, hydrology, and the factors affecting metabolic processes of aquatic ecosystems. I led a team of scientists and engineers who developed numeric models that simulate water quality in rivers where periphyton dominates the oxygen and nutrient dynamics. Although most of my past research has focused on flowing surface waters, my scope of interest lately has been broadening to include riparian, wetland, estuarine, and shallow groundwater environments. I often design and assemble novel instrumentation to support measurements of ecological and hydrological processes. These research instruments, for example, enable monitoring of surface water-groundwater exchange, groundwater flow, and measuring aquatic community metabolism and nutrient dynamics in flowing mesocosms. I currently am involved in integrating field instruments with software tools to facilitate research at remote sites using web-based data collection and graphical display.
 |
| Measuring oxygen metabolism
of periphyton on sticks,
Kissimmee River, FL. |
Research Areas
- Ecosystems
- Freshwater Ecology
- Biogeochemistry
- River Hydrodynamics
- Riparian-stream Channel and Hyporheic Interactions
- Modeling of Lotic Ecosystems and Temperature
- Environmental Monitoring Instrument Development
- Thermal Dynamics in Streams
Recent Projects
Current Projects
- Influence of groundwater-surface water exchange on periphyton dynamics
- Thermal Influences on Periphyton Dynamics
- Thermal Survey of Carson and Truckee Rivers
- Simulated Effects of Decreased Discharge on Water Temperature of Warm Springs Ck, NV
- Development of a Profiling Temperature Probe
Selected Publications
- Uehlinger U. and J.T. Brock. 2005:
- Periphyton metabolism along a nutrient gradient in a desert river (Truckee River, Nevada, USA). Aquatic Sciences. 67:507-516.
- Brock, J.T. and K.W. Cummins. 2002:
- Ecosystem metabolism in the Kissimmee River, South Florida, USA. Verh. Internat. Verein. Limnol., 28(2):680-686.
- Brock, J.T. T.V. Royer, E.B. Snyder, and S.A. Thomas. 1999:
- Periphyton metabolism: a chamber approach. In: R.H. Webb, J.C. Schmidt, G.R. Marzolf, R.A. Valdez (Eds.), The Controlled Flood in Grand Canyon, pp. 217-224. Geophysical Monograph 110; American Geophysical Union.
- Dodds, W.K. and J.T. Brock. 1998:
- A portable flow chamber for in situ determination of benthic metabolism. Freshwater Biology 39:49-59.
- Bott, T.L., J.T. Brock, A. Baattrup-Pedersen, P.A. Chambers, W.K. Dodds, K.T. Himbeault, J.R. Lawrence,
- D. Planas, E.B. Snyder, G.M. Wolfaardt. 1997: An evaluation of techniques for measuring periphyton metabolism in chambers. Canadian Journal of Fisheries and Aquatic Sciences. 54:715-725.
- Rushforth, S.R. and J.T. Brock. 1991:
- Attached diatom communities from the lower Truckee River, summer and fall 1986. Hydrobiologia 224:49-64.
- Bott, T.L., J.T. Brock, C.S. Dunn, R.J. Naiman, R.W. Ovink, and R.C. Peterson. 1985:
- Benthic community metabolism in four temperate stream systems: An inter-biome comparison and evaluation of the river continuum concept. Hydrobiologia. 123: 3-45.
- Richey, J.E., J.T. Brock, R.J. Naiman, R.C. Wissmar, and J.F. Stallard. 1980:
- Organic carbon: oxidation and transport in the Amazon River. Science 207:1348-1351.
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