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The
River Systems Macro-theme Area comprises process studies
that incoporate elements of SAHRA's original Thrust
Area I, Spatial and Temporal Components of the Water
Balance, Thrust Area III, Functioning of Riparian Systems,
and Thrust Area V, Water as a Resource: Competition,
Conflict, Planning, and Policy. Within this new Macro-Theme
area, the following research concerns are addressed:
- Riparian water balance
- Nutrient and solute sources and
cycling
- Ecosystem dynamics and value
- Nonmarket value and links to
ecosystem dynamics
- Stakeholder involvement
- Integration into decision support
- Relevant technology and equipment
Active SAHRA projects within this Macro-theme Area are:
| ID |
PROJECT TITLE |
| R01 |
Geochemical identification
of riparian water sources (completed) |
| R03 |
Pedotransfer
functions and land-surface parameters for modeling |
| R04 |
Rio
Grande solute balance and dynamic simulation models
|
| R08 |
Riparian vegetation dynamics
(completed) |
| R09 |
The
influence of episodic flow events on nutrient and
sediment loads in semiarid streams |
| R12 |
Quantifying
terrestrial-aquatic linkages and biogeochemical
fluxes in semi-arid watersheds |
| R13 |
Coupling
groundwater/surface water/vegetation evapotranspiration (completed) |
| R14 |
Coupling nutrients and surface water |
| R16 |
Domestic and institutional water demand: experimental,
historical, and survey analysis |
| R17 |
Medium resolution MODFLOW model of the Middle & Lower San Pedro river basin |
| R21 |
Extending
the "Alternative Futures" model of the
San Pedro river basin |
| R22 |
Groundwater model for hydrological and ecological changes in riparian zones (completed) |
| R24 |
Water,
carbon, and nutrient flux in ephemeral channels
in the San Pedro River Basin (completed) |
| R25 |
Coupling
BGC to hydrology |
| R27 |
EPA
stormwater trading experiments (completed) |
| R28 |
Evaluation
of paleodata to determine past, present, and future
hydrologic variability in Arizona (completed) |
| R29 |
Riparian ET tool with GIS-based vegetation management (completed) |
| R30 |
Evaluation
of water use change due to riparian vegetation change (completed) |
| R31 |
Riparian
vegetation change, variable hydrology, and ecological
processes |
| R33 |
Water,
energy and carbon cycling in a southwestern subalpine
forest (completed) |
| R34 |
Hydrologic
impacts of LA basin fires (completed) |
| R35 |
Evaluation
of impacts of brush invasion |
| R36 |
Upland
semiarid ecosystems' water and carbon dioxide exchange
(completed) |
| R37 |
Rainout
experiments in the Santa Rita range (completed) |
| R38 |
Evaluating changes in spring hydrology as indicators of drought in the Middle Verde Valley (completed) |
| R39 |
Valuation of Rio Grande Bosque restoration (completed) |
| R40 |
Hydrologic thresholds for biodiversity in semiarid riparian ecoysystems |
| R41 |
Groundwater models for science-based
conservation, restoration, and water planning (CDI project) |
| R42 |
Stream-aquifer interactions in effluent-dominated
riparian systems (WSP grant) |
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