{"accessLimitation":{"value":"no limitations to public access","code":"Available","uri":"http://purl.org/coar/access_right/c_abf2"},"authors":[{"familyName":"Mackay","givenName":"E.B.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0001-5697-7062","fullName":"Mackay, E.B."},{"familyName":"Clarke","givenName":"M.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Clarke, M."},{"familyName":"Feuchtmayr","givenName":"H.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-2028-4843","fullName":"Feuchtmayr, H."},{"familyName":"Rhodes","givenName":"G.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-0488-3843","fullName":"Rhodes, G."},{"familyName":"Maberly","givenName":"S.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-3541-5903","fullName":"Maberly, S."}],"availability":"Available","boundingBoxes":[{"westBoundLongitude":-7.427,"eastBoundLongitude":1.768,"southBoundLatitude":49.864,"northBoundLatitude":58.882,"bounds":"{\"type\": \"Feature\",      \"properties\": {},      \"geometry\": {        \"type\": \"Polygon\",        \"coordinates\": [[[-7.427, 49.864], [-7.427, 58.882], [1.768, 58.882], [1.768, 49.864], [-7.427, 49.864]]]      }}","coordinates":"[[[-7.427, 49.864], [-7.427, 58.882], [1.768, 58.882], [1.768, 49.864], [-7.427, 49.864]]]"}],"citation":{"authors":["Mackay, E.B.","Clarke, M.","Feuchtmayr, H.","Rhodes, G.","Maberly, S."],"bibtex":"https://catalogue.ceh.ac.uk/documents/2ea22f99-242c-4524-a5dc-3067a5f97a72/citation?format=bib","day":31,"doi":"10.5285/2ea22f99-242c-4524-a5dc-3067a5f97a72","month":8,"publisher":"NERC EDS Environmental Information Data Centre","resourceTypeGeneral":"dataset","ris":"https://catalogue.ceh.ac.uk/documents/2ea22f99-242c-4524-a5dc-3067a5f97a72/citation?format=ris","title":"Chlorophyll absorbance data from lake and river samples incubated with different nutrient combinations in the English Lake District, Norfolk Broads and Greater Glasgow, 2017-2018","url":"https://doi.org/10.5285/2ea22f99-242c-4524-a5dc-3067a5f97a72","year":2023},"custodians":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"}],"datasetReferenceDate":{"publicationDate":"2023-08-31"},"description":"The dataset contains spectrophotometrically measured chlorophyll absorbance data from lake and river samples incubated with different nitrogen, phosphorus, silica or combined nutrients, as bioassays, either ex situ for phytoplankton or in situ for periphyton. These data were collected from sites in the English Lake District, Norfolk Broads and Greater Glasgow area in 2017 and 2018 as part of the NERC funded Freshwater Highlight Topic 'Hydroscape'.\n\nThe work was supported by the Natural Environment Research Council (Grant NE/N00597X/1).","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:connectivity x stressor interactions in freshwater habitats","awardNumber":"NE/N006453/1","awardURI":"https://gtr.ukri.org/projects?ref=NE/N00597X/1","orcid":false,"ror":true}],"id":"2ea22f99-242c-4524-a5dc-3067a5f97a72","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/2ea22f99-242c-4524-a5dc-3067a5f97a72.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":"bioassay"},{"value":"phytoplankton","uri":"http://www.eionet.europa.eu/gemet/concept/6247"},{"value":"periphyton","uri":"http://www.eionet.europa.eu/gemet/concept/6115"},{"value":"river","uri":"http://www.eionet.europa.eu/gemet/concept/7244"},{"value":"lake","uri":"http://www.eionet.europa.eu/gemet/concept/4594"},{"value":"chlorophyll","uri":"http://www.eionet.europa.eu/gemet/concept/1391"}],"keywordsPlace":[{"value":"Bassenthwaite Lake","uri":"http://sws.geonames.org/2656187"},{"value":"Derwent water","uri":"http://sws.geonames.org/2651313"},{"value":"Rydal Water","uri":"http://sws.geonames.org/7288050"},{"value":"Grasmere","uri":"http://sws.geonames.org/6956554"},{"value":"Esthwaite water","uri":"http://sws.geonames.org/2649887"},{"value":"Easedale Tarn"},{"value":"Codale Tarn"},{"value":"Bishop Loch"},{"value":"Castle Semple Loch","uri":"http://sws.geonames.org/2653551"},{"value":"Woodend Loch"},{"value":"Strathclyde Loch"},{"value":"Loch Libo","uri":"http://sws.geonames.org/2644532"},{"value":"Decoy Broad"},{"value":"Malthouse Broad","uri":"http://sws.geonames.org/9884716"},{"value":"Ranworth Broad","uri":"http://sws.geonames.org/9884715"},{"value":"Wroxham Broad"}],"licences":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}],"lineage":"Surface dip water samples were collected at the deepest point, lake edge, or ~1 m from the river bank. Periphyton sample filters were obtained from nutrient diffusing periphytometers that were deployed in the streams for two weeks. After two weeks these filters were retrieved and frozen at -20°C on return from the field. \n\nPhytoplankton bioassays were initially filtered through a 100 µm mesh, 3x35 ml of filtered water treatments were spiked with the different nutrient additions. Tubes were then incubated for 14 days at 20°C. Following the incubation period, the contents of the tubes were resuspended and filtered onto Whatman GF/C filters and frozen at -20°C.\n\nFilters in all cases were defrosted and extracted in 7.36 ml hot methanol, with absorbance readings obtained from a Hitachi U2800 UV/Visible spectrophotometer using a 5cm cuvette.\n\nData were entered into a spreadsheet and manually checked for transcription errors. Data from all experiments were collated into a single file for data archiving purposes.\n\n","metadataDate":"2026-05-11T18:16:30","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/2ea22f99-242c-4524-a5dc-3067a5f97a72","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/2ea22f99-242c-4524-a5dc-3067a5f97a72.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"familyName":"Mackay","givenName":"E.B.","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","nameIdentifier":"https://orcid.org/0000-0001-5697-7062","address":{"deliveryPoint":"Lancaster Environment Centre, Library Avenue, 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