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Each water sample was analysed for the concentration of multiple fractions of nitrogen and phosphorus, and for the stable oxygen and nitrogen isotope composition of nitrate. Water samples were collected across the period 2017-2018 from multiple river-lake networks in the English Lake District and the Norfolk Broads.   \n\nThis research was supported by the Natural Environment Research Council (Grant NE/N006453/1: Hydroscape – Connectivity x Stressor Interactions)","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"funding":[{"funderName":"Natural Environment Research Council","funderIdentifier":"https://ror.org/02b5d8509","awardTitle":"Hydroscape","awardNumber":"NE/N006453/1","awardURI":"https://gtr.ukri.org/projects?ref=NE/N006453/1","orcid":false,"ror":true}],"id":"0d6de9b6-1f80-4f78-b65a-503db8ba63cf","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/0d6de9b6-1f80-4f78-b65a-503db8ba63cf.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Environmental Monitoring Facilities","uri":"http://inspire.ec.europa.eu/theme/ef"}],"keywordsOther":[{"value":"lake","uri":" http://www.eionet.europa.eu/gemet/concept/4594"},{"value":"river","uri":"http://www.eionet.europa.eu/gemet/concept/7244"},{"value":"phosphorus","uri":"http://www.eionet.europa.eu/gemet/concept/6196"},{"value":"nitrogen","uri":"http://www.eionet.europa.eu/gemet/concept/5605"},{"value":"stable isotopes"},{"value":"biogeochemistry","uri":"http://www.eionet.europa.eu/gemet/concept/834"}],"keywordsTheme":[{"value":"Water quality","uri":"http://onto.nerc.ac.uk/CEHMD/topic/16"}],"licences":[{"value":"This resource is licensed under a Creative Commons Attribution 4.0 International Licence","code":"license","uri":"https://creativecommons.org/licenses/by/4.0/"}],"lineage":"Water samples were collected from well-mixed areas of streams and rivers via bridges or from river banks. Samples of lake surface water (upper 30 cm of water column) were collected from pelagic zones via boats, or from the lake shore where logistical constraints prevented the use of boats. Water samples were analysed for field parameters (pH, EC, temperature) immediately, and then processed (filtration) in the field before storage on ice prior to return to the laboratory. Samples were stored in refrigerators or frozen (for isotope analysis) prior to analysis. A range of laboratory analyses were undertaken to determine the concentration of individual nutrient fractions and stable nitrate oxygen and nitrogen isotope composition. \n\nField blanks, using >18.2 M Ω milliQ-grade laboratory water, were included in each sampling visit and confirmed no contamination occurred during sample collection or processing. Calibrations for nutrient concentration analyses were confirmed using externally-certified reference standards. Repeated analysis of 10% of samples, selected at random, was used to evaluate precision of the analytical approaches for nutrient concentration analyses. Raw stable isotope values were calibrated using international standards. All international standards were run in triplicate, as well as an internal nitrate standard for quality control measures. At least one environmental sample in each run was also analysed in triplicate. \n\nData were entered into a spreadsheet and manually checked for transcription errors.","metadataDate":"2026-06-29T17:24:46","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/0d6de9b6-1f80-4f78-b65a-503db8ba63cf","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/0d6de9b6-1f80-4f78-b65a-503db8ba63cf.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"familyName":"Surridge","givenName":"B.W.J.","organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"pointOfContact","email":"b.surridge@lancaster.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-2425-1739","fullName":"Surridge, B.W.J.","pointOfContact":"Lancaster University"}],"publicationDate":"2023-11-03T00:00:00.000Z","publishers":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/0d6de9b6-1f80-4f78-b65a-503db8ba63cf"},{"code":"10.5285/0d6de9b6-1f80-4f78-b65a-503db8ba63cf","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"familyName":"Surridge","givenName":"B.W.J.","organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"author","email":"b.surridge@lancaster.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-2425-1739","fullName":"Surridge, B.W.J."},{"familyName":"Grefe","givenName":"I.","organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"author","email":"i.grefe@lancaster.ac.uk","nameIdentifier":"https://orcid.org/0000-0001-6211-4976","fullName":"Grefe, I."},{"familyName":"Wynn","givenName":"P.M.","organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"author","email":"p.wynn@lancaster.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-1221-5530","fullName":"Wynn, P.M."},{"familyName":"Barker","givenName":"P.A.","organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"author","email":"p.barker@lancaster.ac.uk","fullName":"Barker, P.A."},{"familyName":"Pereira","givenName":"M.G.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-3740-0019","fullName":"Pereira, M.G."},{"familyName":"Surridge","givenName":"B.W.J.","organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"pointOfContact","email":"b.surridge@lancaster.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-2425-1739","fullName":"Surridge, B.W.J.","pointOfContact":"Lancaster University"},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"},{"organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"rightsHolder","email":"b.surridge@lancaster.ac.uk"}],"rightsHolders":[{"organisationName":"Lancaster University","organisationIdentifier":"https://ror.org/04f2nsd36","role":"rightsHolder","email":"b.surridge@lancaster.ac.uk"}],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/27700","title":"OSGB 1936 / British National Grid"}],"spatialRepresentationTypes":["textTable"],"temporalExtents":[{"begin":"2017-01-01","end":"2018-12-31"}],"title":"Nutrient concentration and stable isotope data from water samples across river-lake networks in the English Lake District and Norfolk Broads, 2017-2018","topicCategories":[{"value":"inlandWaters","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/inlandWaters"}],"topics":["http://onto.nerc.ac.uk/CEHMD/topic/16"],"type":"dataset","uri":"https://catalogue.ceh.ac.uk/id/0d6de9b6-1f80-4f78-b65a-503db8ba63cf","useConstraints":[{"value":"This resource is licensed under a Creative Commons Attribution 4.0 International Licence","code":"license","uri":"https://creativecommons.org/licenses/by/4.0/"}]}