EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/24/2018 | 2:45 PM - 3:00 PM | BIOGEOCHEMICAL ASYNCHRONY: ECOSYSTEM DRIVERS OF CONCENTRATION-DISCHARGE DYNAMICS ACROSS TEMPORAL SCALES | 330 B
BIOGEOCHEMICAL ASYNCHRONY: ECOSYSTEM DRIVERS OF CONCENTRATION-DISCHARGE DYNAMICS ACROSS TEMPORAL SCALES
Watersheds exhibit tremendous heterogeneity in response to climatic and landscape controls. Understanding this heterogeneity and identifying processes underlying the complexities of watershed response remains a central task of watershed modelers. Accordingly, researchers have become increasingly interested in identifying key hydrologic and biogeochemical signatures of watershed functionality, and in linking these signatures to dominant controls on watershed processes. Recently, there has been particular interest in identifying signatures or key metrics of event-scale relationships between solute concentrations and river discharge. Such metrics provide a means of understanding the export dynamics of nutrients and other stream constituents under varying discharge regimes, and also serve as an indicator of the spatial and temporal availability of these constituents within the landscape. Herein, we characterize concentration-discharge relationships for nitrogen and phosphorus across more than 200 Great Lakes watersheds. Based on this analysis, we demonstrate a diversity of watershed behavior spanning a significant gradient of climate and land use. Most importantly, our results show strong correlations between event-scale nutrient dynamics and seasonal concentration regimes, with these regimes being significantly impacted by agricultural and urban land use.
- Nitrogen
- Phosphorous
- Water Quality
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Presenters/Authors
Kimberly Van Meter
(), University of Illinois at Chicago, kvanmete@uic.edu;
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Nandita Basu
(), University of Waterloo, nandita.basu@uwaterloo.ca;
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