{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Melissa M. Baustian", "hasEmail": "mailto:mbaustian@thewaterinstitute.org"}, "description": "Monthly surface water samples were collected at sites in the Lake Pontchartrain estuary to assess the phytoplankton biomass and composition using algal pigment analysis. A total of 27 algal pigments including chlorophyll a and accessory pigments were evaluated from each of the water samples.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13URVEC", "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.68a4886dd4be023065e4c623.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_68a4886dd4be023065e4c623", "keyword": ["Lake Maurepas", "Lake Pontchartrain", "Louisiana", "USGS:68a4886dd4be023065e4c623", "aquatic ecosystems", "biota", "ecology", "phytoplankton", "surface water quality"], "modified": "2025-09-30T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-90.7031, 29.9859, -89.6292, 30.4108", "theme": ["geospatial"], "title": "Phytoplankton pigment data collected from surface waters in the Lake Pontchartrain estuary, Louisiana, from November 2024 to May 2025"}