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Data were collected between May and June 2022.","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","awardNumber":"NE/R016429/1","orcid":false,"ror":true},{"funderName":"Academy of Finland","awardNumber":"321780","orcid":false,"ror":false},{"funderName":"European Union","awardTitle":"Horizon 2020 research and innovation programme ","awardNumber":"776480 ","orcid":false,"ror":false},{"funderName":"Stirling and Clackmannanshire ","awardTitle":"City Region Deal","orcid":false,"ror":false},{"funderName":"Scottish Government","awardTitle":"Hydro Nation Scholars Programme","orcid":false,"ror":false}],"id":"7794cbfa-1d74-4885-b303-8c20f4608728","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/7794cbfa-1d74-4885-b303-8c20f4608728.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":"carotenoid"},{"value":"phycocyanin"},{"value":"phytoplankton","uri":"http://www.eionet.europa.eu/gemet/concept/6247"},{"value":"chlorophyll","uri":"http://www.eionet.europa.eu/gemet/concept/1391"},{"value":"water quality","uri":"http://www.eionet.europa.eu/gemet/concept/9214"},{"value":"spectrophotometry","uri":"http://onto.nerc.ac.uk/CAST/256"},{"value":"lake","uri":"http://www.eionet.europa.eu/gemet/concept/4594"}],"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":"Water samples were collected by grab sampling from the surface water layers. Sampling sites were located along the lake shores, except at Loch Leven, where boats were used to collect samples from the open water.\n\nChlorophylls and carotenoids were determined with High Performance Liquid Chromatography (HPLC). Phycocyanin was determined by spectrophotometry.\n\nSamples for HPLC and spectrophotometry were collected on glass fibre filters (GF/F Whatman or Fisherbrand MF300) so that the filters were not clogged but were notably coloured.\n\nThe HPLC sample filters were folded to enclose the samples and wrapped in aluminium foil before flash-freezing them by submerging them in liquid nitrogen and then storing them at -80 °C. Sample filters for spectrophotometry were stored at -20 °C.\n\nFilters were shipped on dry-ice to the analysis laboratories where they were stored at -80 °C (HPLC) and 20 °C (spectrophotometry) and analysed within 4-6 months of collection. Details of the HPLC protocol and spectrophotometry are given in data_descriptor.docx.","metadataDate":"2026-06-30T16:32:30","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/7794cbfa-1d74-4885-b303-8c20f4608728","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/7794cbfa-1d74-4885-b303-8c20f4608728.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"familyName":"Salmi","givenName":"P.","organisationName":"University of Jyväskylä","organisationIdentifier":"https://ror.org/05n3dz165","role":"pointOfContact","email":"pauliina.u.m.salmi@jyu.fi","nameIdentifier":"https://orcid.org/0000-0003-3247-2259","fullName":"Salmi, P.","pointOfContact":"University of Jyväskylä"}],"publicationDate":"2023-09-22T00:00:00.000Z","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/7794cbfa-1d74-4885-b303-8c20f4608728"},{"code":"10.5285/7794cbfa-1d74-4885-b303-8c20f4608728","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"familyName":"Salmi","givenName":"P.","organisationName":"University of Jyväskylä","organisationIdentifier":"https://ror.org/05n3dz165","role":"author","email":"pauliina.u.m.salmi@jyu.fi","nameIdentifier":"https://orcid.org/0000-0003-3247-2259","fullName":"Salmi, P."},{"familyName":"Salmi","givenName":"P.","organisationName":"University of Jyväskylä","organisationIdentifier":"https://ror.org/05n3dz165","role":"pointOfContact","email":"pauliina.u.m.salmi@jyu.fi","nameIdentifier":"https://orcid.org/0000-0003-3247-2259","fullName":"Salmi, P.","pointOfContact":"University of Jyväskylä"},{"familyName":"Pölönen","givenName":"I.","organisationName":"University of Jyväskylä","organisationIdentifier":"https://ror.org/05n3dz165","role":"author","email":"ilkka.polonen@jyu.fi","nameIdentifier":"https://orcid.org/0000-0002-5129-7364","fullName":"Pölönen, I."},{"familyName":"Beckmann","givenName":"D.A. 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