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Water 2017, 9(7), 485; https://doi.org/10.3390/w9070485

Transport of Conservative and “Smart” Tracers in a First-Order Creek: Role of Transient Storage Type

1
Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben-Gurion University of Negev, Sede Boqer Campus, 8499000, Israel
2
USDA-ARS Environmental Microbial and Food Safety Lab, Beltsville, MD 20705, USA
3
Department of Environmental Science & Technology, University of Maryland, College Park, Maryland, MD 20742, USA
4
USDA-ARS Hydrology and Remote Sensing Lab, Beltsville, MD 20705, USA
*
Author to whom correspondence should be addressed.
Received: 29 April 2017 / Revised: 26 June 2017 / Accepted: 28 June 2017 / Published: 2 July 2017
(This article belongs to the Special Issue Water Quality Monitoring and Modeling in Lakes)
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Abstract

Using “smart” tracers such as Resazurin (Raz) allows assessment of sediment-water interactions and associated biological activity in streams. We compared two approaches to simulate the effects of transient storage (TS) on the transport of conservative and reactive tracers. The first approach considered TS as composed of metabolically active and metabolically inactive compartments, while the second model approach accounted for the surface transient storage (STS) and hyporheic transient storage (HTS). Experimental data were collected at a perennial first-order creek in Maryland, MD, USA, by injecting the conservative tracer bromide (Br) and the reactive (Raz) tracer and sampling water at two weir stations. The STS–HTS approach led to a more accurate simulation of Br transport and tails of the Raz and its product Rezorufin (Rru) breakthrough curves. Sediments support large microbial communities, and the STS–HTS model in creeks provides additional parameters to characterize the habitats of microbial water-quality indicator organisms. View Full-Text
Keywords: creek; transient storage; resazurin-resorufin system; numerical modeling creek; transient storage; resazurin-resorufin system; numerical modeling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yakirevich, A.; Shelton, D.; Hill, R.; Kiefer, L.; Stocker, M.; Blaustein, R.; Kuznetsov, M.; McCarty, G.; Pachepsky, Y. Transport of Conservative and “Smart” Tracers in a First-Order Creek: Role of Transient Storage Type. Water 2017, 9, 485.

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