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  • Nitrogen retention in headwater streams: the influence of groundwater- surface water interaction

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    Author(s)
    Thomas, S. A.
    Valett, H. M.
    Webster, J. R.
    Mulholland, P. J.
    Fellows, Christy Susan
    Dahm, C. N.
    Peterson, C. G.
    Griffith University Author(s)
    Fellows, Christy S.
    Year published
    2001
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    Abstract
    Groundwater-surface water (GW-SW) interaction lengthens hydraulic residence times, increases contact between solutes and biologically active surfaces, and often creates a gradient of redox conditions conducive to an array of biogeochemical processes. As such, the interaction of hydraulic patterns and biogeochemical activity is suspected to be an important determinant of elemental spiraling in streams. Hydrologic interactions may be particularly important in headwater streams, where the extent of the GW-SW mixing environment (i.e., hyporheic zone) is proportionately greater than in larger streams. From our current understanding ...
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    Groundwater-surface water (GW-SW) interaction lengthens hydraulic residence times, increases contact between solutes and biologically active surfaces, and often creates a gradient of redox conditions conducive to an array of biogeochemical processes. As such, the interaction of hydraulic patterns and biogeochemical activity is suspected to be an important determinant of elemental spiraling in streams. Hydrologic interactions may be particularly important in headwater streams, where the extent of the GW-SW mixing environment (i.e., hyporheic zone) is proportionately greater than in larger streams. From our current understanding of stream ecosystem function, we discuss nitrogen (N) spiraling, present a conceptual model of N retention in streams, and use both of these issues to generate specific research questions and testable hypotheses regarding N dynamics in streams.
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    Journal Title
    The Scientific World Journal
    Volume
    1
    Issue
    S2
    DOI
    https://doi.org/10.1100/tsw.2001.272
    Copyright Statement
    © 2001 S.A. Thomas et al.
    Subject
    PRE2009-Freshwater Ecology
    PRE2009-Hydrology
    Publication URI
    http://hdl.handle.net/10072/61062
    Collection
    • Journal articles

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