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Zinc concentrations before and after the implementation of remediation strategies were examined in three sub-watersheds in southwestern Colorado. Three tributaries to the Animas River (Cement Creek, Mineral Creek, and the Upper Animas River) were analyzed for pre- and post- remediation changes in zinc loading. A fourth site below all tributaries...

In the McMurdo Dry Valleys of Antarctica (MDV), streams are an important source of water and hydrologic connectivity between glaciers and lakes across the valleys, however, these streams only run for a few weeks to a few months out of the year. Unlike the streams that are only active in...

Groundwater supports streamflow and ecosystems in semi-arid, montane catchments, which are environments considered particularly sensitive to climate change. Despite its importance, the relationship between groundwater and streamflow is not well understood. To remedy this, we seek to model groundwater-surface water interactions to assess how groundwater discharge to surface water varies...

Reservoirs are typically considered too young and dynamic to validate paleolimnological analysis (Filstrup et al. 2010). Using biological and mineralogical proxies, three shifts were identified in the history of Possum Kingdom Lake, successfully demonstrating the application of paleolimnology in reservoirs. The trends documented may provide insight into the factors driving...

In the McMurdo Dry Valleys [MDV], Antarctica, little is known about concentration-discharge ( C-q ) relationships for biological solutes such as DOC. Because MDV streams are low in organic carbon and experience large diel fluctuations in discharge ( q ), we expected that the MDV DOC- q relationship would be...

Tracer experiments have been used to study the exchanges of channel waters with groundwater in streams and their impacts on ecosystem function and water quality are well documented (Bencala & Walters, 1983; Mulholland et al., 1997). However, these experiments are much more difficult in larger rivers due to higher flows...

Reduced human activity associated with lockdown protocols due to the Covid-19 pandemic have temporarily changed carbon emission patterns of urban ecosystems globally. Understanding how these changes anthropogenic activities contribute to the urban emissions offer the opportunity to better understand the carbon dynamics outside pandemic conditions. Here we explore how the...

Maggie Anderson

The Swinomish People have long standing traditions of protecting, honoring, and thanking Mother Earth for the gifts that nourish our people. The culture of the Tribe is intrinsically tied to the health of the environment that sustains the habitat for our important natural resources and the cultural practices they support...

Wildfire-specific optical surrogates detect pyrogenic organic matter fluxes in freshwater mixing scenarios Sarah J. Fscher 1,2 , Tim Fegel 3 and Paul J. Wilkerson 2 , Leah Rivera 2 , Charles C. Rhoades 3 and Fernando L. Rosario-Ortiz 1,2 1 Department of Civil, Environmental and Architectural Engineering, University of Colorado...