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Journal article
Solute Transport and Transformation in an Intermittent, Headwater Mountain Stream with Diurnal Discharge Fluctuations
Water (Basel), v 11(11), 2208
01 Nov 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Time-variable discharge is known to control both transport and transformation of solutes in the river corridor. Still, few studies consider the interactions of transport and transformation together. Here, we consider how diurnal discharge fluctuations in an intermittent, headwater stream control reach-scale solute transport and transformation as measured with conservative and reactive tracers during a period of no precipitation. One common conceptual model is that extended contact times with hyporheic zones during low discharge conditions allows for increased transformation of reactive solutes. Instead, we found tracer timescales within the reach were related to discharge, described by a single discharge-variable StorAge Selection function. We found that Resazurin to Resorufin (Raz-to-Rru) transformation is static in time, and apparent differences in reactive tracer were due to interactions with different ages of storage, not with time-variable reactivity. Overall we found reactivity was highest in youngest storage locations, with minimal Raz-to-Rru conversion in waters older than about 20 h of storage in our study reach. Therefore, not all storage in the study reach has the same potential biogeochemical function and increasing residence time of solute storage does not necessarily increase reaction potential of that solute, contrary to prevailing expectations.
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Details
- Title
- Solute Transport and Transformation in an Intermittent, Headwater Mountain Stream with Diurnal Discharge Fluctuations
- Creators
- Adam S. Ward - Indiana Univ, ONeill Sch Publ & Environm Affairs, Bloomington, IN 47401 USAMarie J. Kurz - Drexel University, Academy of Natural Sciences of Drexel UniversityNoah M. Schmadel - United States Geological SurveyJulia L. A. Knapp - Swiss Fed Inst Technol, Dept Environm Syst Sci, CH-8092 Zurich, SwitzerlandPhillip J. Blaen - University of BirminghamCiaran J. Harman - Johns Hopkins UniversityJennifer D. Drummond - Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, EnglandDavid M. Hannah - Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, EnglandStefan Krause - Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, EnglandAngang Li - Northwestern UniversityEugenia Marti - Ctr Adv Studies Blanes CEAB CSIC, Integrat Freshwater Ecol Grp, Blanes 17300, SpainAlexander Milner - University of BirminghamMelinda Miller - Indiana University BloomingtonKerry Neil - Indiana University BloomingtonStephen Plont - Virginia TechAaron I. Packman - Northwestern UniversityNathan I. Wisnoski - Indiana University BloomingtonSteven M. Wondzell - Pacific Northwest Research StationJay P. Zarnetske - Michigan State University
- Publication Details
- Water (Basel), v 11(11), 2208
- Publisher
- Mdpi
- Number of pages
- 21
- Grant note
- EAR 1652293; EAR 1417603; EAR 1846855; EAR 1446328 / National Science Foundation (NSF) awards; National Science Foundation (NSF) DOE's Office of Biological and Environmental Research via the Mercury Scientific Focus Area at Oak Ridge National Laboratory; United States Department of Energy (DOE) DE-SC0019377 / Department of Energy (DOE) award; United States Department of Energy (DOE) Leverhulme Trust NERC NE/L003872/1 / UK Natural Environment Research Council; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC) 734317 / European Commission; European Union (EU); European Commission Joint Research Centre NE/L003872/1 / NERC; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC) DEB-1440409 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Academy of Natural Sciences of Drexel University; Drexel University
- Web of Science ID
- WOS:000502264500010
- Scopus ID
- 2-s2.0-85075566470
- Other Identifier
- 991021860800904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Environmental Sciences
- Water Resources