Jim Brock

Affiliate Associate Research Scientist

Phone

208-869-6936

E-Mail

Jim.Brock@dri.edu

Division

Earth and Ecosystem Sciences

Professional Interests

Jim Brock delivers a bucketful of calibrated water monitoring sondes to groundwater discharge methods comparison field site at Perth, Australia

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.

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

Measuring oxygen metabolism of periphyton on sticks, Kissimmee River, FL.

Recent Research 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
Groundwater Influences on Aquatic Plants of Lake Tahoe – Download PDF

Education

Degree	Year	Institution	Area
M.S.	1980	Idaho State University	Zoology
B.S.	1973	Amherst College	Biology

Publications

2016

Brock, J. T., Hire, D., Fitzgerald, B. C., Susfalk, R. B. (2016). Hydrologic Monitoring for the S-356 Pump Station Test (Miami-Dade County, Florida) 2015 – 2016, Annual Report USACE Contract No. W912EP-15-R-0024, August 2016.

2014

Brock, J. T., Susfalk, R. B., Fitzgerald, B. C. (2014). Data summary report groundwater flow and hydrology in vicinity of L31N Canal (Miami-Dade, Florida) during 2005-2011.
https://s3-us-west-2.amazonaws.com/webfiles.dri.edu/publications/L31N_2012_Data_Report_5Sep2014_Final.pdf

2008

Cobourn, J., Saito, L., Brock, J. T., Naranjo, R. C., Susfalk, R. B., Chandra, S. (2008). Groundwater-Surface Water Interactions Along the Truckee and Carson Rivers, University of Nevada Cooperative Extension Publication

2005

Sada, D. W., Brock, J. T., Fritsen, C. H., Rosamond, C. L., Shope, C., Benner, S. G., McKay, W. A. (2005). Baseline Hydrologic and Biological Monitoring, McCarran Ranch Restoration Project, Lower Truckee River, Nevada (2003-2004), DRI Report No. 41220

Conference Proceedings

2008

Naranjo, R. C., Stone, M. C., Mckay, A., Brock, J. T., Davis, C. J. (2008). Data Collection for Investigating Hyporheic Flow and Nutrient Exchange in the Truckee River. AGU Fall Meeting: San Francisco, CA

Naranjo, R. C., Brock, J. T., Susfalk, R. B., Mckay, A., Stone, M. C., Saito, L., Tyler, S. W. (2008). Nutrient and Hyporheic flow Dynamics Through a Riffle-Pool Sequence, Truckee River at Fleish, CA. Nevada Water Resources Association 2008 Annual Conference.

2005

Shope, C., Cooper, C. A., Brock, J. T., Benson, D. A. (2005). Hyporheic exchange within a channel bar as a regulator of periphyton dynamics: Salt Lake City, Utah

Shope, C., Brock, J. T., Benner, S. G., McKay, W. A., Svetich, T., Brisbin, M. (2005). Baseline hydraulic relationship and water quality of the McCarran Ranch restoration: Desert Research Institute, Reno, Nevada

2004

Shope, C., Benner, S. G., Brock, J. T., Sada, D. W., Fritsen, C. H. (2004). Influence of temporal and spatial river temperature heterogeneity on nutrient cycling: Olympic Valley, California

2002

Dana, G. L., Brock, J. T. (2002). Influence of riparian vegetation on local climate and river temperature.: Victoria, B.C.