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    • Zooplankton Survey of the Northern Sacramento-San Joaquin Delta, California, 2016-2018

    Metadata Updated: October 30, 2025

    This data set contains information on zooplankton and associated environmental parameters for sampling conducted in California's northern Sacramento-San Joaquin Delta between May 2016 and April 2018. Macrozooplankton were sampled with horizontal tows (water surface) of a 50 cm-diameter conical plankton net that was 150cm long with 102µm mesh. Samples were preserved in the field in 10% formalin for laboratory processing that was conducted by a contractor (EcoAnalysts, Inc). Due to processing limitations, taxonomic data is not available for every sample and are thus not reflected in every data table (samples 1-28, 318-328, 531-620 have no data in the Zooplankton Taxa Table)

    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 14, 2025
    Metadata Updated Date October 30, 2025

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 14, 2025
    Metadata Updated Date October 30, 2025
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/usgs-5b8eda46e4b0702d0e7ec6ef
    Data Last Modified 2025-01-24T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-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
    Harvest Object Id 3035bd5d-7214-4890-b6d5-029a0a71a226
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -121.8260, 38.1756, -121.5596, 38.3621
    Source Datajson Identifier True
    Source Hash 01a230a5b9cc320da2d7311eed558ac085f0fcb716f7c39d1259405ee8537d6e
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -121.8260, 38.1756, -121.8260, 38.3621, -121.5596, 38.3621, -121.5596, 38.1756, -121.8260, 38.1756}

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