The Role Of Electron-Shuttling By Dissolved Humics In The Reduction Of Iron Oxide And Release Of Bound Arsenic In A Shallow Aquifer In Bangladesh

Aug. 23, 2018

Hageman , Clarissa 1 ; Mladenov , Natalie 2 ; McKnight , Diane 3 1 University of Colorado at Boulder 2 University of Colorado at Boulder 3 University of Colorado at Boulder Arsenic (As) is a highly toxic and ubiquitous metalloid that poses a significant threat to human and ecosystem...

Climate Variability And Phytoplankton Community Analysis In An Alpine Lake, Colorado Rocky Mountains Front Range, U.S.A.

Aug. 23, 2018

Flanagan , Colleen M 1 ; McKnight , Diane M 2 ; Roche , Amber 3 ; Gardner , Eileen M 4 ; Weber , Lindsay R 5 5 Presenting Author 1 INSTAAR 2 INSTAAR 3 INSTAAR 4 INSTAAR 5 INSTAAR Because the hydrologic regime of alpine catchments is dominated...

Antarctic Climate Cooling And Response Of Diatoms In Glacial Meltwater Streams

Aug. 23, 2018

Esposito , Rhea 1 ; Horn , Shannon 2 ; McKnight , Diane 3 ; Cox , Michael 4 ; Grant , M. 5 ; Spaulding , Sarah 6 ; Doran , Peter 7 ; Stanish , Lee 8 8 Presenting Author 1 INSTAAR 2 3 INSTAAR 4 5 6...

Investigations Of Hyporheic Temperature Regimes In Arctic Alaska Streams Using Time Series Analysis Techniques

Aug. 23, 2018

Cozzetto , Karen 1 ; Gooseff , Michael 2 ; Neupauer , Roseanna 3 ; McNamara , Jim 4 ; Brosten , Troy 5 ; Bradford , John 6 ; Bowden , Breck 7 1 Univeristy of Colorado-Boulder 2 Colorado School of Mines 3 Univeristy of Colorado-Boulder 4 Boise State...

CRUMP Water Quality Assessment, Church Rock Area, 2003-2004

Aug. 23, 2018

Brown , Gerald R. 1 1 Navajo Technical College This presentation will provide a summary of the work conducted by Church Rock Chapter of the Navajo Nation under the auspicies of the Church Rock Uranium Monitoring Project, and SRIC's role in providing organizational and technical support for those activities. Results...

Stream Power Modeling Of Knickpoints On The Roan Plateau, Western Colorado

Aug. 23, 2018

Berlin , Maureen M 1 ; Anderson , Robert S 2 1 University of Colorado/INSTAAR 2 University of Colorado/INSTAAR The Roan Plateau in western Colorado constitutes a natural experiment for studying landscape response to a drop in base level. Late Cenozoic incision of the upper Colorado River led to elevational...

Moderation Of Water-Column Nutrient Concentrations By Sediment-Water Exchange

Aug. 23, 2018

Anthony , James L. 1 ; Lewis , William M. 2 1 CIRES/Center for Limnology 2 CIRES/Center for Limnology Mass balances suggest that phytoplankton production in laks may be subsidized by nutrients released from epilimnetic sediments, but the role of turbulence in these exchanges if poorly understood. Through its influence...

INVITED FACULTY TALK - Sliding, Water Pressure, Water Chemistry And Outburst Floods At Kennicott Glacier, Alaska

Aug. 23, 2018

Anderson , Suzanne P. 1 ; Bartholomaus , Timothy C. 2 ; Anderson , Robert S. 3 1 CU 2 CU 3 CU Observations at Kennicott Glacier, Alaska, suggest that glacier sliding may trigger drainage of Hidden Creek Lake, an ice-dammed lake that annually produces a jökulhlaup. Glaciers slide when...

INVITED TALK - Challenges In The Study Of Mercury-Dissolved Organic Matter Interactions

Aug. 23, 2018

Aiken , George 1 1 US Geological Survey A number of biogeochemical processes that influence the fate, bioavailability and transport of mercury (Hg) in aquatic systems are mediated by the interaction of Hg with dissolved organic matter (DOM). In many cases, the interactions between Hg and DOM in a particular...

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