Photo of Tamzen Stringham, Extension

Tamzen Stringham

Professor

Summary

Current research projects include:

  1. Revegetation of constructed meadow channels using sedge plugs
  2. Riparian capability as defined by environmental and physical attributes of forested streams
  3. Use of western juniper as a barrier to wildlife herbivory of young willow plants
  4. Winterfat ecology and restoration of degraded winterfat sites
  5. Livestock performance relative to winter grazing of winterfat range
  6. State-and-transition modeling of one-seed juniper encroached rangelands in New Mexico
  7. Winter grazing, sage grouse habitat and insect populations

NV State-and-Transition Model Reports

Education

B.S. California State University, Chico 1981
M.S. Oregon State University, 1984
Ph.D. Oregon State University, 1996

News & Journal Articles, Fact Sheets, Reports...

Abstracts
Expediting state-and-transition models through sorting of ecological sites into disturbance response groups. Stringham, T., Novak-Echenique, P., Freese, E., Wiseley, L., Shaver, P. 2011, N/A
Journals
Ecosystem carbon and nitrogen gains following 27 years of grazing management in a semiarid alluvial valley. Morra B, Brisbin H, Stringham T, Sullivan BW. 2023, J Environ Manage. 2023 Jul 1;337:117724
Carbon stocks and total belowground carbon flux respond to weather and grazing in semiarid montane meadows. Morra, B., Richardson, W., Stringham, T. & Sullivan, B. W. 2023, Ecosystems 26, 1428–1440
Comparison of Landsat and Land-Based Phenology Camera Normalized Difference Vegetation Index (NDVI) for Dominant Plant Communities in the Great Basin Snyder, K. A., Huntington, J., Wehan, B., Morton, C., Stringham, T. 2019, Sensors 2019, 19(5)
Rainfall Interception by Singleleaf Piñon and Utah Juniper: Implications for Stand-Level Effective Precipitation Stringham, T., Snyder, K. A., Snyder, D. K., Lossing, S. S., Carr, C. A., Stringham, B. J. 2018, Rangeland Ecology & Management
(2017). Slash Application Reduces Soil Erosion in Steep-Sloped Pinon-Juniper Woodlands. Rangeland Ecology and Management, 70, 774-780. Noelle, S. M., Carr, C. A., Stringham, T. K., Weltz, M. A. 2017, Rangeland Ecology & Management 70(6):774-780.
Evaluating mountain meadow groundwater response to Pinyon-Juniper and temperature in a great basin watershed. Carroll, R. W.H., Huntington, J. L., Snyder, K. A., Niswonger, R. G., Morton, C., Stringham, T. 2016, Ecohydrology, 1-18
Extracting Plant Phenology Metrics in a Great Basin Watershed: Methods and Consierations for Quantifying Phenophases in a Cold Desert. Snyder, K. A., Wehan, B. L., Filippa, G., Huntington, J. L., Stringham, T., Snyder, D. K. 2016, Sensors, 1-20.
Disturbance Response Grouping of Ecological Sites Increases Utility of Ecological Sites and State-and-Transition Models for Landscape Scale Planning in the Great Basin. Stringham, T., Novak-Echenique, P., Snyder, D. K., Peterson, S., Snyder, K. A. 2016, Rangelands, 38(6), 371-378.
Soil water dynamics and transpiration rates of Western juniper in central Oregon. Mollnau, C., Newton, M., Stringham, T. 2014, J. of Arid Environments, 102, 117-126.
Grazing for Fuels Management and Sage Grouse Habitat Maintenance and Recovery
More than half the total acres (381,727 acres) burned in Nevada during 2012 occurred in sage grouse (Centrocercus urophasianus) Preliminary Priority Habitat (M. Boomer, personal Communication, 2013), an alarming fact for a candidate threatened or endangered species.
 Freese, E. A., T.K. Stringham, G. Simonds, E. Sant. 2013, Rangelands 35 (4):13-17.
Catastrophic Thresholds: A Synthesis of Concepts, Perspectives and Applications. David D. Briske, Robert A. Washington-Allen, Craig R. Johnson, Jeffrey A. Lockwood, Dale R. Lockwood , Tamzen K. Stringham, Herman H. Shugart, 2010, Ecology and Society, 15(3), 10.
Ecological Site Descriptions: Considerations for Riparian Systems. Stringham, T., Repp, J. P. 2010, Rangelands, 32(6), 6.
A process-based application of state-and-transition models: A case study of Western juniper (Juniperus occidentalis) encroachment.. Petersen, S. L., Stringham, T. 2009, Rangeland Ecology and Management, 62, 186-193.
Intercanopy community structure across a heterogeneous landscape in a western juniper encroached ecosystem. Petersen, S. L., Stringham, T. 2009, Journal of Vegetation Science, 20, 1163-1175.
Lay or Popular Publications
Evaluation of the Winnemucca District Drought Response Plan Perryman, B. L., Stringham, T., Schultz, B. W. 2015, The Progressive Rancher
Professional Papers
Digital Mapping of Vegetative Great Groups to Inform Management Strategies
This manuscript details a novel method for mapping plant communities across Major Land Resource Area boundaries utilizing machine learning and leveraging the Disturbance Response Group concept into larger study areas. Accuracy of soil - plant community correlation was increased 14% over existing soil mapping.
 Phipps, Lucas; Stringham, Tamzen 2024, Journal of Rangeland Ecology and Management
Research Reports
nevada rangeland
Great Basin Ecological Site Development Project: State and Transition Models for Major Land Resource Area 26 in Nevada and Portions of California
The team examined local knowledge, soil mapping data, and published literature relating to soils, plant ecology, plant response to various disturbances, disturbance history of the area, and many other important attributes necessary to document the ecology of MLRA 26 by ecological site.
 T. K. Stringham, D. K. Snyder, P. Novak-Echenique, K. O’Neill, A. Lyons, M. Johns 2021, Experiment Station, University of Nevada, Reno, RR-2021-01
Great Basin Ecological Site Development Project: State and Transition Models for Major Land Resource Area 23, Nevada and portions of California
This report contains state-and-transition models for 99 ecological sites within the Bureau of Land Management's Major Land Resource Area 23 in the states of Nevada and California.
 Tamzen K. Stringham, D.K. Snyder, P. Novak-Echenique, A.a Wartgow, A. Badertscher, K. O’Neill 2019, Experiment Station | University of Nevada, Reno, SP-2019-01
Ecological potential of sagebrush dominated rangeland: Nevada and NE California. A case study utilizing BLM Nevada AIM and NRCS Nevada NRI Monitoring Data Major Land Resource Area 25 Nevada. Stringham, T. K. and D. K. Snyder 2017, Experiment Station, University of Nevada, Reno, RR-2017-02
USDA Ecological Site Description State-and-Transition Models Major Land Resource Area 24 T.K. Stringham, P. Novak-Echenique, A. Wartgow, D. Snyder 2017, Experiment Station, University of Nevada, Reno, RR-2017-03
Final Report for USDA Ecological Site Description State-and-Transition Models, Major Land Resource Area 28A and 28B Nevada. (01st ed., vol. 2015, pp. 1524). Stringham, T., Novak-Echenique, P., Blackburn, P., Coombs, C., Snyder, D., Wartgow, A. 2015, Nevada Agricultural Experiment Station, University of Nevada, Reno, RR-2015-01.
Final Report for USDA Ecological Site Description State-and-Transition Models by Disturbance Response Groups, Major Land Resource Area 25 Nevada. (01st ed., vol. 2015, pp. 530). Stringham, T., Novak-Echenique, P., Blackburn, P., Snyder, D., Wartgow, A. 2015, Nevada Agricultural Experiment Station, University of Nevada, Reno, RR-2015-02.
State-and-transition models for Major Land Resource Area 24, Nevada: Final Report Stringham, T. 2011, USDA, NRCS