Quantifying Nitrate Uptake In An Unsteady, Anabranching, Antarctic Stream

Koch , Joshua C 1 ; McKnight , Diane M 2 ; Neupauer , Roseanna 3 ; Baeseman , Jennifer 4 ; Gooseff , Michael 5 ; Rajagopalan , Balaji 6 1 University of Colorado 2 University of Colorado 3 University of Colorado 4 Kent State University 5 Colorado School...

The Effects Of Photobleaching On Spectroscopic Properties Of Fulvic Acids Isolated From A Tropical Wetland, The Okavango Delta, Botswana

Huynh , Cuong T 1 ; Mladenov , Natalie 2 1 University of Colorado at Boulder 2 University of Colorado at Boulder The aquatic and terrestrial plants of the Okavango Delta are important contributors to the pool of dissolved organic matter (DOM) and have an important role in biogeochemical cycling...

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

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.

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

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

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...

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

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...

Evaluating Regional Patterns In Nitrate Sources To Watersheds In National Parks Of The Rocky Mountains Using Nitrate Isotopes

Nanus , Leora 1 ; Williams , Mark W 2 ; Campbell , Donald H 3 ; Kendall , Carol 4 ; Elliott , Emily M 5 1 University of Colorado Boulder, US Geological Survey 2 University of Colorado Boulder 3 US Geological Survey 4 US Geological Survey 5 University...

Sources Of DOM To Alpine Surface Waters: In-Lake Vs. Watershed Production

Miller , Matthew 1 ; McKnight , Diane 2 ; Borgnis , Evyan 3 1 INSTAAR, University of Colorado 2 INSTAAR, University of Colorado 3 University of San Francisco The pulse of dissolved organic matter (DOM) that occurs during snowmelt in mountain catchments is associated with the flushing of DOM...

The Biogeochemistry Of A Smelly Lake: Little Gaynor Lake, Colorado

McCutchan, Jr. , James H 1 ; Lewis, Jr. , William M 2 ; Blankenship , Ariann L 3 ; Oppold , Mary 4 1 University of Colorado 2 University of Colorado 3 University of Colorado 4 University of Colorado Little Gaynor Lake is a small endorheic basin between Niwot...

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