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    • Bottom Trawl Catch Alewife Densities and Ages in Lakes Michigan and Huron

    Metadata Updated: September 24, 2025

    This data release provides catch-per-unit-effort (CPUE) data by age-class for alewife (Alosa pseudoharengus) based on bottom trawl surveys from Lake Michigan (1973-2022) or Lake Huron (1976-2004). These data are associated with a study that sought to evaluate whether alewife populations across the Great Lakes are synchronous in their time series.

    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 13, 2025
    Metadata Updated Date September 24, 2025

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 13, 2025
    Metadata Updated Date September 24, 2025
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/usgs-65563793d34ee4b6e05c474d
    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 0f3d0e40-d6b0-49e1-b36c-1d7f6271601a
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -88.1543, 41.5579, -79.5410, 46.2862
    Source Datajson Identifier True
    Source Hash 8de68643bb7e144a0e79ee2b55f723b66c23c6131223767615f39b508e25e179
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -88.1543, 41.5579, -88.1543, 46.2862, -79.5410, 46.2862, -79.5410, 41.5579, -88.1543, 41.5579}

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