Solute Transport and Transformation in an Intermittent, Headwater Mountain Stream with Diurnal Discharge Fluctuations

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dc.contributor.authorWard, Adam S.en
dc.contributor.authorKurz, Marie J.en
dc.contributor.authorSchmadel, Noah M.en
dc.contributor.authorKnapp, Julia L. A.en
dc.contributor.authorBlaen, Phillip J.en
dc.contributor.authorHarman, Ciaran J.en
dc.contributor.authorDrummond, Jennifer D.en
dc.contributor.authorHannah, David M.en
dc.contributor.authorKrause, Stefanen
dc.contributor.authorLi, Angangen
dc.contributor.authorMarti, Eugeniaen
dc.contributor.authorMilner, Alexander M.en
dc.contributor.authorMiller, Melinda C.en
dc.contributor.authorNeil, Kerryen
dc.contributor.authorPlont, Stephenen
dc.contributor.authorPackman, Aaron I.en
dc.contributor.authorWisnoski, Nathan I.en
dc.contributor.authorWondzell, Steven M.en
dc.contributor.authorZarnetske, Jay P.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessioned2019-10-25T16:41:11Zen
dc.date.available2019-10-25T16:41:11Zen
dc.date.issued2019-10-23en
dc.date.updated2019-10-25T14:07:57Zen
dc.description.abstractTime-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.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWard, A.S.; Kurz, M.J.; Schmadel, N.M.; Knapp, J.L.; Blaen, P.J.; Harman, C.J.; Drummond, J.D.; Hannah, D.M.; Krause, S.; Li, A.; Marti, E.; Milner, A.; Miller, M.; Neil, K.; Plont, S.; Packman, A.I.; Wisnoski, N.I.; Wondzell, S.M.; Zarnetske, J.P. Solute Transport and Transformation in an Intermittent, Headwater Mountain Stream with Diurnal Discharge Fluctuations. Water 2019, 11, 2208.en
dc.identifier.doihttps://doi.org/10.3390/w11112208en
dc.identifier.urihttp://hdl.handle.net/10919/95066en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectunsteady-state dischargeen
dc.subjectsolute transporten
dc.subjectintermittent streamen
dc.subjectdiurnal discharge fluctuationsen
dc.subjectreactive tracersen
dc.subjectheadwatersen
dc.subjectriver corridoren
dc.subjecthyporheicen
dc.subjectresazurinen
dc.titleSolute Transport and Transformation in an Intermittent, Headwater Mountain Stream with Diurnal Discharge Fluctuationsen
dc.title.serialWateren
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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