Global Scale Climatic And Atmospheric Influences On The Chemical Character Of Dissolved Organic Matter In Alpine And Remote Lakes

Aug. 21, 2018

Mladenov , Natalie 1 ; Morales-Baquero , Rafael 2 ; Sommaruga , Ruben 3 ; Camarero , Lluis 4 ; Laurion , Isabel 5 ; Dieguez , Maria 6 ; Reche , Isabel 7 1 INSTAAR, University of Colorado 2 Universidad de Granada 3 University of Innsbruck 4 Centre d'Estudis...

Characterization Of Water Chemistry In The Presence Of Didymosphenia Geminata Growth In Boulder Creek

Aug. 21, 2018

McLoughlin , Rachel 1 ; Gabor , Rachel 2 ; McKnight , Diane 3 1 University of Colorado at Boulder 2 University of Colorado at Boulder 3 University of Colorado at Boulder Dissolved organic matter plays a vital role in many aquatic ecosystem processes. This study explores water chemistry changes...

The Effect Of Nuisance Diatom Growth On Benthic Macroinvertebrate Communities

Aug. 21, 2018

McLaughlin , Aimee 1 ; McKnight , Diane 2 1 University of Colorado at Boulder; INSTAAR 2 University of Colorado at Boulder; INSTAAR Didymosphenia geminata is a freshwater benthic diatom found in cold, mountain streams. In the past ten years it has become a nuisance species, producing a persistent stalk...

Water Availability Controls On Community Structure Of An Ephemeral Meltwater Stream Ecosystem In The McMurdo Dry Valleys

Aug. 21, 2018

McKnight , Diane 1 ; Simmons , Breana 2 ; Stanish , Lee 3 1 INSTAAR and CEA Engineering, University of Colorado at Boulder 2 Natural Resource Ecology Laboratory, Colorado State University 3 INSTAAR and Environmental Studies, University of Colorado at Boulder The McMurdo Dry Valleys of Antarctica contain many...

Results Of Operational Near Real-Time Radiometric Soil Moisture Imaging In CLASIC 2007

Aug. 21, 2018

McIntyre , Eric M. 1 ; Gasiewski , Albin J 2 2 Presenting Author 1 CU/ECE Center for Environmental Technology 2 CU/ECE Center for Environmental Technology During summer 2007 the CU Center for Environmental Technology operated the PSR/CXI scanning C and X-band radiometer onboard the NASA P-3B aircraft. The observation...

A 3ka Record Of Annually Resolved Climate And Ice Sheet Activity From Glacial Lake Hvitarvatn, Iceland

Aug. 21, 2018

Larsen , Darren J 1 ; Miller , Gifford H 2 ; Geirsdóttir , Áslaug 3 1 INSTAAR, University of Colorado 2 INSTAAR, University of Colorado 3 University of Iceland It is widely accepted that 20th century warming has had the most profound effects in the Arctic, where strong positive...

Fine Grain Sediment Transport Over A Coarse Grain Gravel Bed: Flushing The Fines

Aug. 21, 2018

LaGreca , Tony 1 ; Pitlick , John 2 1 University of Colorado Department of Geography 2 University of Colorado Department of Geography Flume experiments were conducted on a bimodal sediment mixture of sand and gravel, to better understand the effects of surface sand concentrations on flow properties and to...

Linking Unsteady Flow, Hyporheic Dynamics And Biogeochemistry In A Glacial Meltwater Stream

Aug. 21, 2018

Koch , Joshua 1 ; McKnight , Diane 2 ; Neupauer , Roseanna 3 1 INSTAAR/USGS 2 INSTAAR 3 CEAE Streamflow in the McMurdo Dry Valleys, Antarctica occurs over 12-14 weeks of the austral summer, and is generated by glacial melt. The magnitude of melt depends on the angle of...

Effects Of Simulated Flood Disturbances On Didymosphenia Geminata

Aug. 21, 2018

Ianniello , Richard S 1 1 University of Colorado In order to assess the resilience of the nuisance diatom didymosphenia geminata in relation to flood disturbances, a simulation technique was developed to measure the loss of algal material due to flooding over a period of time. The diatom is of...

Assessing The History Of Water On Mars Through Global Analysis Of Valley Networks

Aug. 21, 2018

Hynek , Brian M 1 ; Beach , Michael 2 ; Hoke , Monica RT 3 1 University of Colorado 2 University of Colorado 3 University of Colorado Valleys on Mars are thought to have been formed by precipitation and surface runoff as well as groundwater processes, and the relative...

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