@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 xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://ckan.staging.publishing.service.gov.uk/dataset/7cce1828-6599-40cf-8b8c-d7da9834a278> a dcat:Dataset ;
    dct:description "This is a long-term monitoring dataset of surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a from weekly to fortnightly sampling at Blelham Tarn in Cumbria, England that began in 1945 for some variables. The data were initially collected by the Freshwater Biological Association but have been collected by the Centre for Ecology & Hydrology (CEH) and its predecessor Institute of Freshwater Ecology since 1989. The data available to download comprise surface temperature (TEMP) in degree Celsius, surface oxygen saturation (OXYG) in % air-saturation, Secchi depth (SECC) in metres, alkalinity (ALKA) in µg per litre as CaCO3 and pH. Ammonium (NH4N), nitrate (NO3N), soluble reactive phosphate (PO4P), total phosphorus (TOTP), dissolved reactive silicon expressed as SiO2 (SIO2) and phytoplankton chlorophyll a (TOCA) are all given in µg per litre. Water samples are based on a sample integrated from 0 to 5 m. Measurements are made from a boat at a marked location (buoy) at the deepest part of the lake. When it was not possible to visit the buoy, samples were taken from the shore, thus water samples were not integrated on these occasions, marked as Flag 2. All data are from April 1945 until the end of 2013. Full details about this dataset can be found at https://doi.org/10.5285/393a5946-8a22-4350-80f3-a60d753beb00" ;
    dct:identifier "393a5946-8a22-4350-80f3-a60d753beb00" ;
    dct:issued "2017-04-29T04:08:37.832078"^^xsd:dateTime ;
    dct:modified "2026-05-14T14:09:20.950992"^^xsd:dateTime ;
    dct:publisher <https://ckan.staging.publishing.service.gov.uk/organization/866f4088-ae4f-43b8-ba8c-6d3141a327f2> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-2.9730 54.3930, -2.9850 54.3930, -2.9850 54.3990, -2.9730 54.3990, -2.9730 54.3930))"^^gsp:wktLiteral,
                "{\"type\": \"Polygon\", \"coordinates\": [[[-2.973, 54.393], [-2.985, 54.393], [-2.985, 54.399], [-2.973, 54.399], [-2.973, 54.393]]]}"^^<https://www.iana.org/assignments/media-types/application/vnd.geo+json> ] ;
    dct:title "Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Blelham Tarn, 1945 to 2013" ;
    dcat:distribution <https://ckan.staging.publishing.service.gov.uk/dataset/7cce1828-6599-40cf-8b8c-d7da9834a278/resource/3844b8ac-3c89-4ba3-bbbf-6f457e3aee90>,
        <https://ckan.staging.publishing.service.gov.uk/dataset/7cce1828-6599-40cf-8b8c-d7da9834a278/resource/4f87071c-b74d-4796-9035-bc290cabaca2> ;
    dcat:keyword "Blelham Tarn",
        "Environmental Monitoring Facilities" .

<https://ckan.staging.publishing.service.gov.uk/dataset/7cce1828-6599-40cf-8b8c-d7da9834a278/resource/3844b8ac-3c89-4ba3-bbbf-6f457e3aee90> a dcat:Distribution ;
    dct:description "Supporting information available to assist in re-use of this dataset" ;
    dct:format "ZIP" ;
    dct:issued "2026-05-14T14:09:21.007220"^^xsd:dateTime ;
    dct:modified "2026-05-14T14:09:20.958163"^^xsd:dateTime ;
    dct:title "Supporting information" ;
    dcat:accessURL <https://data-package.ceh.ac.uk/sd/393a5946-8a22-4350-80f3-a60d753beb00.zip> ;
    dcat:mediaType "application/zip" .

<https://ckan.staging.publishing.service.gov.uk/dataset/7cce1828-6599-40cf-8b8c-d7da9834a278/resource/4f87071c-b74d-4796-9035-bc290cabaca2> a dcat:Distribution ;
    dct:description "Download a copy of this data" ;
    dct:issued "2026-05-14T14:09:21.007222"^^xsd:dateTime ;
    dct:modified "2026-05-14T14:09:20.958247"^^xsd:dateTime ;
    dct:title "Download the data" ;
    dcat:accessURL <https://data-package.ceh.ac.uk/data/393a5946-8a22-4350-80f3-a60d753beb00> .

<https://ckan.staging.publishing.service.gov.uk/organization/866f4088-ae4f-43b8-ba8c-6d3141a327f2> a foaf:Organization ;
    foaf:name "Environmental Information Data Centre" .