{
  "accessLevel": "public",
  "bureauCode": [
    "010:12"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Yu-Chun Kao",
    "hasEmail": "mailto:ykao@usgs.gov"
  },
  "description": "The data release includes part of the bottom-trawl and gill-net survey data collected between 1952 and 1962 from the research vessel R/V <em>Cisco</em>. The bottom-trawl dataset includes tables for fishing operations and effort (BT_OP.csv), fish catch (BT_Catch.csv), and individual length-weight-sex-maturity (LWSM) records (BT_Fish.csv) for only a subset of species (details below). The gill-net dataset includes tables for fishing operations (GN_OP.csv), fishing effort (GN_Effort.csv), fish catch (GN_Catch.csv), and individual LWSM records (GN_Fish.csv) for only a subset of species (details below). Two reference tables, BT_Spec.csv and Species.csv, are used for bottom trawl specifications and fish species names, respectively.<br />\n<br />\nThis data release is part of the project "Historical habitat use by <em>Coregonus artedi</em> in the Upper Great Lakes and critical embayments" funded by Environmental Protection Agency's Great Lakes Restoration Initiative. Due to the scope of this project, the catch tables (GN_Catch.csv and BT_Catch.csv) only include data for alewife (<em>Alosa pseudoharengus</em>), rainbow smelt (<em>Osmerus mordax</em>), and cisco (<em>Coregonus artedi</em>). LWSM data tables (GN_Fish.csv and BT_Fish.csv) only include data for cisco. Additional data collected from the surveys are archived at the Great Lakes Science Center.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "accessURL": "https://doi.org/10.5066/P9P28C5V",
      "description": "Landing page for access to the data",
      "format": "XML",
      "mediaType": "application/http",
      "title": "Digital Data"
    },
    {
      "@type": "dcat:Distribution",
      "description": "The metadata original format",
      "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.606dc774d34e670a7d5f6241.xml",
      "format": "XML",
      "mediaType": "text/xml",
      "title": "Original Metadata"
    }
  ],
  "identifier": "http://datainventory.doi.gov/id/dataset/USGS_606dc774d34e670a7d5f6241",
  "keyword": [
    "Fishery",
    "Great Lakes",
    "Lake Huron",
    "Lake Michigan",
    "Lake Superior",
    "Lakes",
    "RV Cisco",
    "Survey",
    "USGS:606dc774d34e670a7d5f6241",
    "freshwater ecosystems",
    "inland fishery resources",
    "inlandWaters"
  ],
  "modified": "2025-01-24T00:00:00Z",
  "publisher": {
    "@type": "org:Organization",
    "name": "U.S. Geological Survey"
  },
  "spatial": "-92.2000, 41.5000, -81.5000, 49.0000",
  "theme": [
    "geospatial"
  ],
  "title": "Bottom-trawl and gill-net data from the Upper Great Lakes, collected by R/V Cisco, 1952–1962"
}