Advancing predictive understanding of how dominant processes controlling watershed hydro-biogeochemical function operate under a range of hydrologic regimes and vary along stream networks that drain heterogeneous land covers
Theme 1
Dynamic Headwaters
Theme 2
Stream Corridor Processes
Theme 3
Network Function
Theme 4
Modeling Crosscut
The Tennessee River Basin in the southeastern United States is the most intensively used freshwater water resource region in the contiguous United States, supporting approximately 4.5 million people with estimated withdrawals of more than 280,000 gallons per day per square mile.
Water resources in the Tennessee River Basin and broader southeastern region are vulnerable to changes in land use and land cover and a range of climate-induced disturbances. Projections indicate that the southeastern United States will experience higher temperatures, more extreme heat events, and an intensifying hydrologic cycle with more frequent and severe storm and drought events over time.
To address these changes, the Watershed Dynamics and Evolution (WaDE) Science Focus Area (SFA) at the U.S. Department of Energy’s Oak Ridge National Laboratory (ORNL) will advance predictive understanding of how dominant processes controlling watershed hydro-biogeochemical function operate under a range of hydrologic regimes and vary along stream networks that drain heterogeneous land covers.
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View more| Year | DOI | Authors | Title | Journal | Volume/Pages |
|---|---|---|---|---|---|
| 2023 | 10.1029/2022WR032736 | Ward, A. S., S. M. Wondzell, M. N. Gooseff, T. Covino, S. Herzog, B. McGlynn and R. A. Payn | Breaking the Window of Detection: Using Multi-Scale Solute Tracer Studies to Assess Mass Recovery at the Detection Limit | Water Resources Research | 59(3) e2022WR032736 |
| 2022 | 10.1002/hyp.14570 | Wondzell, S. M. and A. S. Ward | The channel-source hypothesis: Empirical evidence for in-channel sourcing of dissolved organic carbon to explain hysteresis in a headwater mountain stream | Hydrological Processes | 36(5) e14570 |
| 2023 | 10.1007/s00216-022-04468-8 | Crowther, E. R., J. D. Demers, J. D. Blum, S. C. Brooks and M. W. Johnson | Coupling of nitric acid digestion and anion-exchange resin separation for the determination of methylmercury isotopic composition within organisms | Analytical and Bioanalytical Chemistry | 415(5) 759–74 |
| 2023 | 10.1039/D1EM00549A | Koenigsmark, F., M. Chiu, N. Rivera, A. Johs, J. Eskelsen, D. Leonard, B. K. Robertson, A. Szynkiewicz, C. Derolph, L. Zhao, B. Gu, H. Hsu-Kim and E. M. Pierce | Crystal lattice defects in nanocrystalline metacinnabar in contaminated streambank soils suggest a role for biogenic sulfides in the formation of mercury sulfide phases | Environmental Science: Processes & Impacts | 25(3) 445–60 |
| 2023 | 10.3389/frwa.2023.1005792 | Buser-Young, J. Z., P. E. Garcia, M. O. Schrenk, P. J. Regier, N. D. Ward, K. Biçe, S. C. Brooks, E. C. Freeman and C. Lønborg | Determining the biogeochemical transformations of organic matter composition in rivers using molecular signatures | Frontiers in Water | 5 |
| 2022 | 10.1039/D2EM00142J | Brooks, S. C., A. L. Riscassi, C. L. Miller, K. A. Lowe, X. Yin and T. L. Mehlhorn | Diel mercury concentration variations in a mercury-impacted stream | Environmental Science: Processes & Impacts | 24(8) 1195–211 |
| 2023 | 10.1021/acs.est.2c03633 | Li, H., B. Reinhart, S. Moller and E. Herndon | Effects of C/Mn Ratios on the Sorption and Oxidative Degradation of Small Organic Molecules on Mn-Oxides | Environmental Science & Technology | 57(1) 741–50 |
| 2023 | 10.1029/2022GL102616 | Ikard, S. J., K. C. Carroll, D. F. Rucker, R. F. Adams and S. C. Brooks | Geoelectric Characterization of Hyporheic Exchange Flow in the Bedrock-Lined Streambed of East Fork Poplar Creek, Oak Ridge, Tennessee | Geophysical Research Letters | 50(8) e2022GL102616 |
| 2023 | 10.1016/j.gca.2022.12.008 | Liang, X., A. Johs, M. J. Abernathy, J. Zhao, H. Du, P. Ku, L. Zhang, N. Zhu, X. Yin, S. Brooks, L. Zhao, R. Sarangi, E. M. Pierce and B. Gu | High methylation potential of mercury complexed with mixed thiolate ligands by Geobacter sulfurreducens PCA | Geochimica et Cosmochimica Acta | 342 74–83 |
| 2022 | 10.1021/acsearthspacechem.1c00442 | Gu, X. and S. L. Brantley | How Particle Size Influences Oxidation of Ancient Organic Matter during Weathering of Black Shale | ACS Earth and Space Chemistry | 6(6) 1443–59 |
| 2023 | 10.1021/acs.est.2c09457 | Zhang, L., Y. Yin, Y. Sun, X. Liang, D. E. Graham, E. M. Pierce, F. E. Löffler and B. Gu | Inhibition of Methylmercury and Methane Formation by Nitrous Oxide in Arctic Tundra Soil Microcosms | Environmental Science & Technology | 57(14) 5655–65 |
| 2022 | 10.1016/j.envsoft.2022.105453 | Rathore, S. S., G. E. Schwartz, S. C. Brooks and S. L. Painter | Joint estimation of biogeochemical model parameters from multiple experiments: A bayesian approach applied to mercury methylation | Environmental Modelling & Software | 155 105453 |
| 2023 | 10.1016/j.apgeochem.2023.105617 | Wood, D. L., K. A. Cole, E. M. Herndon and D. M. Singer | Lime slurry treatment of soils developing on abandoned coal mine spoil: Linking contaminant transport from the micrometer to pedon-scale | Applied Geochemistry | 151 105617 |
| 2023 | 10.1029/2022WR033445 | Shaughnessy, A. R., M. J. Forgeng, T. Wen, X. Gu, J. D. Hemingway and S. L. Brantley | Linking Stream Chemistry to Subsurface Redox Architecture | Water Resources Research | 59(5) e2022WR033445 |
| 2023 | 10.1016/j.soilbio.2023.108964 | Neupane, A., E. M. Herndon, T. Whitman, A. M. Faiia and S. Jagadamma | Manganese effects on plant residue decomposition and carbon distribution in soil fractions depend on soil nitrogen availability | Soil Biology and Biochemistry | 178 108964 |
| 2023 | 10.1016/j.jhydrol.2023.129670 | Le, P. V. V., S. S. Rathore and S. L. Painter | A multiscale model for solute transport in stream corridors with unsteady flow | Journal of Hydrology | 622 129670 |
| 2023 | 10.1029/2022GB007412 | Santos, F. and E. Herndon | Plant-Soil Relationships Influence Observed Trends Between Manganese and Carbon Across Biomes | Global Biogeochemical Cycles | 37(1) e2022GB007412 |
| 2023 | 10.1016/j.jhazmat.2022.130589 | Du, H., X. Gu, A. Johs, X. Yin, T. Spano, D. Wang, E. M. Pierce and B. Gu | Sonochemical oxidation and stabilization of liquid elemental mercury in water and soil | Journal of Hazardous Materials | 445 130589 |
| 2023 | 10.1029/2022WR032718 | Becker, P. S., A. S. Ward, S. P. Herzog and S. M. Wondzell | Testing Hidden Assumptions of Representativeness in Reach-Scale Studies of Hyporheic Exchange | Water Resources Research | 59(1) e2022WR032718 |
| 2022 | 10.1029/2022WR032018 | Tsai, C. H., D. F. Rucker, S. C. Brooks, T. Ginn and K. C. Carroll | Transient Storage Model Parameter Optimization Using the Simulated Annealing Method | Water Resources Research | 58(7) e2022WR032018 |
| 2023 | 10.3389/frwa.2023.1150126 | Liu, S., D. Lu, S. L. Painter, N. A. Griffiths and E. M. Pierce | Uncertainty quantification of machine learning models to improve streamflow prediction under changing climate and environmental conditions | Frontiers in Water | 5 |
| 2023 | 10.3389/frwa.2023.1147561 | Wymore, A. S., A. S. Ward, E. Wohl and J. W. Harvey | Viewing river corridors through the lens of critical zone science | Frontiers in Water | 5 |
