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    <titleInfo>
        <title>Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin</title>
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    <name type="personal">
        <namePart type="given">Richard</namePart>
        <namePart type="given">E</namePart>
        <namePart type="family">Marinos</namePart>
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    <name type="personal">
        <namePart type="given">K</namePart>
        <namePart type="given">J</namePart>
        <namePart type="given">Van</namePart>
        <namePart type="family">Meter</namePart>
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            <roleTerm authority="marcrelator" type="text">author</roleTerm>
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    <name type="personal">
        <namePart type="given">Nandita</namePart>
        <namePart type="given">B</namePart>
        <namePart type="family">Basu</namePart>
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            <roleTerm authority="marcrelator" type="text">author</roleTerm>
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        <dateIssued>2020</dateIssued>
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            <title>Geophysical Research Letters, Volume 47, Issue 16</title>
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            <issuance>continuing</issuance>
            <publisher>American Geophysical Union (AGU)</publisher>
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        <genre authority="marcgt">periodical</genre>
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    <abstract>The Upper Mississippi River Basin is the largest source of reactive nitrogen (N) to the Gulf of Mexico. Concentration‐discharge (C‐Q) relationships offer a means to understand both the terrestrial sources that generate this reactive N and the in‐stream processes that transform it. Progress has been made on identifying land use controls on C‐Q dynamics. However, the impact of basin size and river network structure on C‐Q relationships is not well characterized. Here, we show, using high‐resolution nitrate concentration data, that tile drainage is a dominant control on C‐Q dynamics, with increasing drainage density contributing to more chemostatic C‐Q behavior. We further find that concentration variability increases, relative to discharge variability, with increasing basin size across six orders of magnitude, and this pattern is attributed to different spatial correlation structures for C and Q. Our results show how land use and river network structure jointly control riverine N export.</abstract>
    <identifier type="citekey">Marinos-2020-Is</identifier>
    <identifier type="doi">10.1029/2020gl087051</identifier>
    <location>
        <url>https://gwf-uwaterloo.github.io/gwf-publications/G20-106001</url>
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    <part>
        <date>2020</date>
        <detail type="volume"><number>47</number></detail>
        <detail type="issue"><number>16</number></detail>
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%0 Journal Article
%T Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin
%A Marinos, Richard E.
%A Meter, K. J. Van
%A Basu, Nandita B.
%J Geophysical Research Letters, Volume 47, Issue 16
%D 2020
%V 47
%N 16
%I American Geophysical Union (AGU)
%F Marinos-2020-Is
%X The Upper Mississippi River Basin is the largest source of reactive nitrogen (N) to the Gulf of Mexico. Concentration‐discharge (C‐Q) relationships offer a means to understand both the terrestrial sources that generate this reactive N and the in‐stream processes that transform it. Progress has been made on identifying land use controls on C‐Q dynamics. However, the impact of basin size and river network structure on C‐Q relationships is not well characterized. Here, we show, using high‐resolution nitrate concentration data, that tile drainage is a dominant control on C‐Q dynamics, with increasing drainage density contributing to more chemostatic C‐Q behavior. We further find that concentration variability increases, relative to discharge variability, with increasing basin size across six orders of magnitude, and this pattern is attributed to different spatial correlation structures for C and Q. Our results show how land use and river network structure jointly control riverine N export.
%R 10.1029/2020gl087051
%U https://gwf-uwaterloo.github.io/gwf-publications/G20-106001
%U https://doi.org/10.1029/2020gl087051

Markdown (Informal)

[Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin](https://gwf-uwaterloo.github.io/gwf-publications/G20-106001) (Marinos et al., GWF 2020)

• Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin (Marinos et al., GWF 2020)

ACL

• Richard E. Marinos, K. J. Van Meter, and Nandita B. Basu. 2020. Is the River a Chemostat?: Scale Versus Land Use Controls on Nitrate Concentration‐Discharge Dynamics in the Upper Mississippi River Basin. Geophysical Research Letters, Volume 47, Issue 16, 47(16).