Modeled sub-hourly nitrate concentrations in subsurface water across a salt marsh system in Elkhorn Slough, California

Grande, Emilio; Zimmer, Margaret; Seybold, Erin; Tatariw, Corianne

doi:10.15485/1987518

Title: Modeled sub-hourly nitrate concentrations in subsurface water across a salt marsh system in Elkhorn Slough, California

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Abstract

Salt marshes are dynamic hydrologic systems where terrestrial groundwater, terrestrial surface water, and seawater mix due to bi-directional flows and pressure gradients. Salt marshes are known to remove excess nitrate from water thereby improving water quality in coastal systems. However, our knowledge of the short-term processes (e.g., intra-tidal) in salt marshes is limited. Further, we lack knowledge about how these short-term dynamics may change as a function of seasonality. To address this knowledge gap, we develope a sampling methodology that allowed us to continuously measure nitrate in subsurface water at three different depths across three marsh elevations at sub-hourly time steps. Here we present a data table with the results of nitrate in porewater across the three salt marsh elevations (information in the data set). We analyzed nitrate with a s::can spectrophotometer. We used the UV-Vis absorbance of the samples to calculate nitrate concentrations using a local calibration library. More information about the methodology can be found in Grande et al (2023). Seasonal and Tidal Variations in Hydrologic Inputs Drive Salt Marsh Porewater Nitrate Dynamics, Hydrological Processes.

Authors:

; Zimmer, Margaret; Seybold, Erin; Tatariw, Corianne

California State University, East Bay; California State University, East Bay
University of California Santa Cruz
University of Kansas
University of Alabama

Publication Date:: Sun Jan 01 04:00:00 UTC 2023

DOE Contract Number:: SC0021044

Research Org.:: Environmental System Science Data Infrastructure for a Virtual Ecosystem; Linking Nutrient Reactivity and Transport in Subsurface Flowpaths Along a Terrestrial-Estuarine Continuum

Sponsoring Org.:: U.S. DOE > Office of Science > Biological and Environmental Research (BER)

Subject:: 54 ENVIRONMENTAL SCIENCES; coast; estuaries; high-frequency data; nitrate; nutrients; salt marsh hydrology

OSTI Identifier:: 1987518

DOI:: https://doi.org/10.15485/1987518

Citation Formats


                    Grande, Emilio, Zimmer, Margaret, Seybold, Erin, and Tatariw, Corianne. Modeled sub-hourly nitrate concentrations in subsurface water across a salt marsh system in Elkhorn Slough, California.  United States: N. p., 2023. 
        Web.  doi:10.15485/1987518.

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                    Grande, Emilio, Zimmer, Margaret, Seybold, Erin, & Tatariw, Corianne. Modeled sub-hourly nitrate concentrations in subsurface water across a salt marsh system in Elkhorn Slough, California.  United States.  doi:https://doi.org/10.15485/1987518

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                    Grande, Emilio, Zimmer, Margaret, Seybold, Erin, and Tatariw, Corianne. 2023.  
"Modeled sub-hourly nitrate concentrations in subsurface water across a salt marsh system in Elkhorn Slough, California".  United States.  doi:https://doi.org/10.15485/1987518.  https://www.osti.gov/servlets/purl/1987518. Pub date:Sun Jan 01 04:00:00 UTC 2023

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@article{osti_1987518,

  title        = {Modeled sub-hourly nitrate concentrations in subsurface water across a salt marsh system in Elkhorn Slough, California},

  author       = {Grande, Emilio and Zimmer, Margaret and Seybold, Erin and Tatariw, Corianne},

  abstractNote = {Salt marshes are dynamic hydrologic systems where terrestrial groundwater, terrestrial surface water, and seawater mix due to bi-directional flows and pressure gradients. Salt marshes are known to remove excess nitrate from water thereby improving water quality in coastal systems. However, our knowledge of the short-term processes (e.g., intra-tidal) in salt marshes is limited. Further, we lack knowledge about how these short-term dynamics may change as a function of seasonality. To address this knowledge gap, we develope a sampling methodology that allowed us to continuously measure nitrate in subsurface water at three different depths across three marsh elevations at sub-hourly time steps. Here we present a data table with the results of nitrate in porewater across the three salt marsh elevations (information in the data set). We analyzed nitrate with a s::can spectrophotometer. We used the UV-Vis absorbance of the samples to calculate nitrate concentrations using a local calibration library. More information about the methodology can be found in Grande et al (2023). Seasonal and Tidal Variations in Hydrologic Inputs Drive Salt Marsh Porewater Nitrate Dynamics, Hydrological Processes.},

  doi          = {10.15485/1987518},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 04:00:00 UTC 2023},

  month        = {Sun Jan 01 04:00:00 UTC 2023}

}

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DOI: https://doi.org/10.15485/1987518

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