{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "David Bunnell", "hasEmail": "mailto:dbunnell@usgs.gov"}, "description": "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.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P95KVYGG", "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.65563793d34ee4b6e05c474d.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_65563793d34ee4b6e05c474d", "keyword": ["Alosa pseudohargengus", "Lake Huron", "Lake Michigan", "USGS:65563793d34ee4b6e05c474d", "alewife", "biota", "bottom trawl", "fish", "freshwater ecosystems", "inlandWaters", "population dynamics"], "modified": "2025-01-24T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-88.1543, 41.5579, -79.5410, 46.2862", "theme": ["geospatial"], "title": "Bottom Trawl Catch Alewife Densities and Ages in Lakes Michigan and Huron"}