@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/4615cbac-a7ce-4d58-a24f-af67cb028ef2> a dcat:Dataset ;
    dct:description """Data were collected in the Sacramento River Deep Water Ship Channel (West Sacramento, CA) in support of a whole-ecosystem experiment investigating whether phytoplankton production and biomass would respond to nitrate additions, which could potentially be exported to food-limited regions in the Sacramento–San Joaquin Delta. The experiment was conducted from July 2 to September 18, 2019. 
Publications presenting ecosystem metabolism and hydrodynamic results from the experiment are under review, and a publication presenting the overall experiment results is in process.
Continuous discharge and water quality data collected at USGS stations in the study area during the experiment are available on NWISWeb:
Site 5: https://waterdata.usgs.gov/nwis/inventory/?site_no=383114121350601&amp;agency_cd=USGS
CM73: https://waterdata.usgs.gov/nwis/inventory/?site_no=383019121350701&amp;agency_cd=USGS
Site 3: https://waterdata.usgs.gov/nwis/inventory/?site_no=382934121350601&amp;agency_cd=USGS""" ;
    dct:identifier "USGS:5edfeeea82ce7e579c708937" ;
    dct:issued "2025-11-21T09:24:52.802728"^^xsd:dateTime ;
    dct:modified "20210730"^^xsd:gYear ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-121.5868 38.4690, -121.5868 38.5400, -121.5835 38.5400, -121.5835 38.4690, -121.5868 38.4690))"^^gsp:wktLiteral ] ;
    dct:title "Nutrient Addition Experiment in the Sacramento River Deep Water Ship Channel" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Leah E Lenoch" ;
            vcard:hasEmail <mailto:llenoch@usgs.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/4615cbac-a7ce-4d58-a24f-af67cb028ef2/resource/9ee103ff-9d04-4246-971f-c816eb3a1fa4>,
        <https://data.amerigeoss.org/dataset/4615cbac-a7ce-4d58-a24f-af67cb028ef2/resource/f80bf1c0-6b71-4437-a1f0-f33cd67c6c78> ;
    dcat:keyword "acoustic-doppler-current-profiling",
        "adcp",
        "amerigeo",
        "amerigeoss",
        "biota",
        "ckan",
        "community-composition",
        "conductivity",
        "environment",
        "estuary",
        "geo",
        "geoss",
        "light-extinction",
        "metabolism",
        "national",
        "nitrogen",
        "north-america",
        "nutrients",
        "oxygen-content-water",
        "oxygen-isotopes",
        "phosphorus",
        "phytoplankton",
        "sacramento-river",
        "sacramento-river-deep-water-ship-channel",
        "sacramentosan-joaquin-delta",
        "temperature",
        "turbidity",
        "united-states",
        "usgs-5edfeeea82ce7e579c708937",
        "velocity-mapping",
        "water-chemistry",
        "water-ph",
        "water-quality",
        "water-temperature",
        "west-sacramento",
        "zooplankton" ;
    dcat:theme <%7Bgeospatial%7D> .

<https://data.amerigeoss.org/dataset/4615cbac-a7ce-4d58-a24f-af67cb028ef2/resource/9ee103ff-9d04-4246-971f-c816eb3a1fa4> a dcat:Distribution ;
    dct:description "Landing page for access to the data" ;
    dct:format "XML" ;
    dct:issued "2022-08-06T21:53:14.431070"^^xsd:dateTime ;
    dct:modified "2025-11-21T09:24:52.784771"^^xsd:dateTime ;
    dct:title "Digital Data" ;
    dcat:accessURL <https://doi.org/10.5066/P9SKCIUW> ;
    dcat:mediaType "application/http" .

<https://data.amerigeoss.org/dataset/4615cbac-a7ce-4d58-a24f-af67cb028ef2/resource/f80bf1c0-6b71-4437-a1f0-f33cd67c6c78> a dcat:Distribution ;
    dct:description "The metadata original format" ;
    dct:format "XML" ;
    dct:issued "2022-08-06T21:53:14.431061"^^xsd:dateTime ;
    dct:modified "2025-11-21T09:24:52.784337"^^xsd:dateTime ;
    dct:title "Original Metadata" ;
    dcat:accessURL <https://data.usgs.gov/datacatalog/metadata/USGS.5edfeeea82ce7e579c708937.xml> ;
    dcat:mediaType "text/xml" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .