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Modeling Nitrate Uptake Via A Tracer Injected Into A Bacteria-Dominated, Polar Desert Stream

Koch , Joshua C 1 ; McKnight , Diane M 2 ; Cozzetto , Karen D 3 1 Institute for Arctic and Alpine Research, ÀÖ²¥´«Ã½ 2 Institute for Arctic and Alpine Research, ÀÖ²¥´«Ã½ 3 Institute for Arctic and Alpine Research, ÀÖ²¥´«Ã½ A 33 hour...

The Influence Of Vegetation On The Soil Moisture Profile In Two Sub-Alpine Ecosystems Of The Southwestern United States

Jacobson , Phillip 1 ; Small , Eric E 2 1 ÀÖ²¥´«Ã½, Geological Sciences 2 ÀÖ²¥´«Ã½, Geological Sciences My research focuses on trends in water content and water potential of different soil depths in a ponderosa pine and an Engelmann spruce forest of the Rio Grande...

INVITED KEYNOTE PRESENTATION: Hydrological Processes Inferred From Geochemical Data -- Or Vice-Versa?

Hornberger , George M. 1 1 University of Virginia Understanding the mechanisms by which rainfall is transformed into streamflow in forested catchments is a key prerequisite to understanding pollutant transport, biogeochemical cycles, and aquatic ecosystem functioning. Geochemical tracers often are used to infer water flowpaths and residence times in upland...

A Comparison Of Hydrological Flowpaths And Nutrient Export In Three Small Tropical Forest Catchments

Hoalst Pullen , Nancy 1 ; Hamann , Hillary B. 2 ; Stallard , Robert F 3 1 Geography, INSTAAR, ÀÖ²¥´«Ã½ at Boulder 2 Geography and Environmental Sciences, ÀÖ²¥´«Ã½ - Colorado Springs 3 USGS (Boulder, CO); INSTAAR, ÀÖ²¥´«Ã½ at Boulder; Smithsonian Tropical Research Institute...

Daily Patterns In Streamwater Chemistry And Isotopic Content Of A Headwater Stream During Snowmelt

Hill , Kenneth 1 ; Hamann , Hillary 2 ; Williams , Mark 3 ; Caine , Nel 4 1 ÀÖ²¥´«Ã½ at Boulder. Department of Geography and INSTAAR 2 ÀÖ²¥´«Ã½ at Colorado Springs. Department of Geography and Environmental Studies 3 ÀÖ²¥´«Ã½ at Boulder. Department...

Numerical Simulations Of Vortex Stirring Associated With Fertilization Efficiency In Marine Invertebrates

Hartford , Jillian R 1 ; Crimaldi , John P 2 1 ÀÖ²¥´«Ã½--Boulder 2 ÀÖ²¥´«Ã½--Boulder Various benthic invertebrates (e.g. sea urchins, anemones, corals) rely on broadcast spawning, a fertilization strategy whereby male and female adults simultaneously release sperm and egg into the surrounding flow [1]. In...

Inverse Modeling Of Soil Hydraulic Properties From Surface Temperature

Gutmann , Ethan D 1 ; Small , Eric E 2 1 ÀÖ²¥´«Ã½ 2 ÀÖ²¥´«Ã½ Soil Hydraulic Properties (SHPs) play an important role in regulating heat and moisture fluxes in land surface models. Currently, SHPs are estimated from soil texture class. However, studies have shown that...

INVITED KEYNOTE PRESENTATION: Integration Of Science And Decision Making For Watershed Management: Reducing The Uncertainty Of Key Water Balance Components At The Basin Scale.

Goodrich , David C. 1 1 USDA-Agricultural Research Service, Tucson Decision-makers and natural resource managers increasingly require much more sophisticated levels of expert findings and scientific results to make informed decisions. No single scientific discipline is typically capable of providing integrated solution for decision-makers and managers. Significant effort beyond the...

INVITED TALK: Hydroclimatology Of The North American Monsoon: Bound By Terrain But Courted By ENSO?

Gochis , David J 1 1 National Center for Atmospheric Research Research into the North American Monsoon reveals a continental-scale climatic system possessing marked intra- and inter-regional variations in hydroclimatology. Some works have elucidated the striking role that regional physiography (e.g. terrain and proximity to water bodies) within the monsoon...

Mercury Complexation With Dissolved Organic Matter As A Function Of Redox Conditions

Gerbig , Chase A. 1 ; Mayer , Marilyn 2 ; Grimberg , Stefan J. 3 1 Deptartment of Civil, Environmental, and Architectural Engineering, ÀÖ²¥´«Ã½, Boulder, CO 2 Deptartment of Civil and Environmental Engineering, Clarkson University, Potsdam, NY 3 Deptartment of Civil and Environmental Engineering, Clarkson University, Potsdam,...

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