{"id": "he45b-16227", "created": "2026-05-29T09:39:59.609733+00:00", "updated": "2026-05-29T09:39:59.628015+00:00", "links": {"self": "https://dar.elter-ri.eu/api/external-datasets/he45b-16227", "oar": "https://dar.elter-ri.eu/api/oar/online-assets?darAssetId=he45b-16227&darAssetType=external-dataset", "self_html": "https://dar.elter-ri.eu/external-datasets/he45b-16227"}, "revision_id": 1, "$schema": "local://external_datasets-1.0.0.json", "metadata": {"alternateIdentifiers": [{"alternateID": "11676.1/wj4L8CcxnkxeTtZ75HZNe9vq", "alternateIDType": "Handle"}], "assetType": "Dataset", "dataLevel": {"dataLevelCode": "2"}, "descriptions": [{"descriptionText": "Data contains chemical parameters from grab samples taken from the AquaNet mesocosms.", "descriptionType": "Abstract"}, {"descriptionText": "Erken Laboratory is located on the shore of Lake Erken, situated in the hemi-boreal landscape 70 km northeast of Stockholm. The station has served as a combined research station and study center for researchers and students at Uppsala University since the 1940s and runs an extensive environmental monitoring program, with some datasets dating back to the founding of the station. The program features both manual and automated high-frequency measurements, including one of the lengthiest series of water temperature, water chemistry, and plankton community analyses. Erken Laboratory serves as a research resource and actively participates in various projects focused on climate change effects on lake ecosystems. The station offers data access, opportunities for new experiments, and the support of skilled technicians. Additionally, it houses an accredited laboratory for water, lake chemistry, and plankton analyses, along with an experimental facility for mesocosm experiments.", "descriptionType": "Other"}], "externalSourceInformation": {"externalSourceName": "SITES (eLTER Sweden)", "externalSourceURI": "https://meta.fieldsites.se/objects/wj4L8CcxnkxeTtZ75HZNe9vq"}, "files": [{"format": "csv", "md5": "wj4L8CcxnkxeTtZ75HZNe9vqzUW8Ht1dJBoaeiRvw4U", "name": "SITES_CHE_ERK_SAN_20170613-20170911_irregular-interval.csv", "size": "37632", "sizeMeasureType": "B", "sourceUrl": "https://data.fieldsites.se/objects/wj4L8CcxnkxeTtZ75HZNe9vq"}], "geoLocations": [{"geographicDescription": "Erken AquaNet platform", "point": {"latitude": 59.836432, "longitude": 18.631039}}], "keywords": [{"keywordLabel": "Chlorophyll"}, {"keywordLabel": "Nitrogen Compounds"}, {"keywordLabel": "Phosphorous Compounds"}, {"keywordLabel": "Fish"}], "licenses": [{"licenseCode": "SITES CCBY4 Data Licence", "licenseURI": "https://meta.fieldsites.se/ontologies/sites/sitesLicence"}], "projects": [{"projectID": "https://meta.fieldsites.se/resources/projects/aquanet", "projectName": "SITES AquaNet"}, {"projectID": "https://meta.fieldsites.se/", "projectName": "SITES external record - eLTER Community"}], "publicationDate": "2017-06-13", "responsibleOrganizations": [{"organizationName": "SITES"}, {"organizationName": "Uppsala University"}], "siteReferences": [{"siteID": "2c560a19-85bb-4e3b-b41f-9f1d06c6e0d6", "siteName": "Erken Laboratory - Sweden"}], "temporalCoverages": [{"endDate": "2017-09-11", "startDate": "2017-06-13"}], "titles": [{"titleText": "AquaNet - Chemical parameters from Erken AquaNet platform"}]}, "pids": {"doi": {"identifier": "11676.1/wj4L8CcxnkxeTtZ75HZNe9vq", "provider": "doi.org"}}}