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    • ABoVE: Alder Shrub Cover and Soil Properties, Alaska, 2019, V2

    Metadata Updated: January 22, 2024

    This dataset holds measures of vegetative cover and soil characteristics for sites in interior Alaska, U.S., along the James W. Dalton Highway (Alaska Route 11). The field data were collected during August in 2018 and 2019 to study the expansion of shrub cover, particularly alders (Alnus spp.) in tundra ecosystems and the potential impact of shrubs on soil properties. Samples were measured along transects at 5- to 10-m intervals. Soil samples were collected and analyzed in the laboratory. Vegetation variables include percent cover of mosses, lichens, graminoid species, shrubs, alder, birch (Betula spp.), and willow (Salix spp.) along with the biomass, size, and age structure of alder. An allometric model to estimate alder biomass was developed. Soil metrics include moisture content, conductivity, bulk density, carbon and nitrogen content and isotope ratios. The data include the maximum annual Normalized Difference Vegetation Index (NDVI) for 2019 and the trend in maximum NDVI for 2000-2020. This is version 2 of this dataset.The data are provided in comma-separated values (CSV) format.

    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 January 22, 2024
    Metadata Updated Date January 22, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Alder shrubs expanding into graminoid tundra. Coldfoot Valley, Alaska. 2019.

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 22, 2024
    Metadata Updated Date January 22, 2024
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2840822238-ORNL_CLOUD
    Data First Published 2024-01-18
    Language en-US
    Data Last Modified 2024-01-22
    Category ABoVE, 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 Pedron, S., A. Welch, R.G. Jespersen, Xiaomei Xu, B. Martinez, Y. Khazindar, N. Fiore, M.L. Goulden, and C.I. Czimczik. 2023. ABoVE: Alder Shrub Cover and Soil Properties, Alaska, 2019, V2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2300
    Graphic Preview Description Alder shrubs expanding into graminoid tundra. Coldfoot Valley, Alaska. 2019.
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/Alder_Shrub_Soil_Alaska_V2_Fig1.jpg
    Harvest Object Id 86870a89-9033-4395-bd75-e1484df2d7e7
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/2300
    Metadata Type geospatial
    Old Spatial -150.71 66.34 -149.71 68.02
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 5c69d45efda73185ecf4f72698d0ced139cbf2cedb1db72c73e4e1d0220a2f43
    Source Schema Version 1.1
    Spatial
    Temporal 2018-08-14T00:00:00Z/2019-08-28T23:59:59Z

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