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    • Delta-X: Root Stable Isotopes from Herbaceous Wetlands, MRD, LA, USA, August 2021

    Metadata Updated: December 7, 2023

    This dataset contains carbon-13 (13C) and nitrogen-15 (15N) isotopic signatures of belowground root biomass samples from herbaceous wetlands in the Atchafalaya and Terrebonne basins of the Mississippi River Delta in coastal Louisiana, U.S., during August 2021. The data were collected during the Delta-X Fall deployment. Field measurements were conducted at three sites in the Atchafalaya basin and three sites in the Terrebonne basin. Five of the sites are adjacent to sites from the Coastwide Reference Monitoring System (CRMS). The other site is located in Wax Lake Delta (WLD) without appropriate adjacent CRMS sites. Herbaceous wetland sites in both basins were chosen to represent a salinity gradient including freshwater, brackish, and saline ecosystems. Root biomass samples were collected using a gouge soil auger. Bulk isotopic signatures in living fine roots were measured with a mass spectrometer coupled to an elemental analyzer.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date September 27, 2023
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Root biomass sample (top 50 cm of soils) collected using a gouge soil auger.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 27, 2023
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2769454572-ORNL_CLOUD
    Data First Published 2023-09-15
    Language en-US
    Data Last Modified 2023-09-19
    Category Delta-X, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Castañeda-Moya, E., and E. Solohin. 2023. Delta-X: Root Stable Isotopes from Herbaceous Wetlands, MRD, LA, USA, August 2021. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2193
    Graphic Preview Description Root biomass sample (top 50 cm of soils) collected using a gouge soil auger.
    Graphic Preview File https://daac.ornl.gov/DELTAX/guides/DeltaX_BG_Root_Stable_Isotopes_Fig1.png
    Harvest Object Id ecb4ccb9-2618-4e93-aa41-b1b570f3f970
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2193
    Metadata Type geospatial
    Old Spatial -91.89 29.17 -90.82 29.51
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash a24cc10448ee6ce812e41d3d07ddb94b81ea2c0ecd4eff2774cc67437254a208
    Source Schema Version 1.1
    Spatial
    Temporal 2021-08-19T00:00:00Z/2021-08-27T23:59:59Z

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