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Benthic diatoms were collected from a 9cm2 surface on 5 submerged cobbles at each river site. Diatoms were identified and abundances determined using microscopy methods in the laboratory, then averaged across the 5 replicates for each site. Data were collected from 11/09/2019 to 18/09/2019.\n","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/S013296/1","orcid":false,"ror":true},{"funderName":"Natural Environment Research Council","funderIdentifier":"https://ror.org/02b5d8509","awardNumber":"NE/S007458/1","orcid":false,"ror":true},{"funderName":"Newton-Paulet Fund","orcid":false,"ror":false}],"hasOnlineServiceAgreement":true,"id":"1ef65c7e-08d6-4148-b751-ae106346e091","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/1ef65c7e-08d6-4148-b751-ae106346e091.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"keywordsOther":[{"value":"diatom","uri":"http://www.eionet.europa.eu/gemet/concept/2168"}],"keywordsTheme":[{"value":"Biodiversity","uri":"http://onto.nerc.ac.uk/CEHMD/topic/2"}],"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":"At each site, benthic diatoms were collected from five submerged cobbles. Using a sterile toothbrush, the benthic biofilm on the upper surface of each cobble was scrubbed from a 9 cm2 area using a miniature quadrat. Organic material was removed using the hot hydrogen peroxide (H2O2) method and replicate samples mounted on individual slides. Diatom valves were identified and counted using light microscopy at x 1000 magnification using phase-contrast illumination (Olympus CX43 microscope). A minimum of 500 diatom valves were identified from each replicate. Where less than 500 valves were present, all valves were counted. To determine estimates of valve density, the number of valves identified within coverslip transects was used to estimate the total number present on the whole coverslip (0.5 mL) and then multiplied to m-2 based on sample volume and rock area (9 cm2) sampled. Abundances were then averaged across the five replicates to mean diatom density (valve m-2) at each site.","metadataDate":"2026-07-01T08:52:28","notGEMINI":true,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/1ef65c7e-08d6-4148-b751-ae106346e091","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/1ef65c7e-08d6-4148-b751-ae106346e091.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"displayName":"Nicky Kerr","organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"pointOfContact","email":"n.r.ker@leeds.ac.uk","fullName":"Nicky Kerr","pointOfContact":"University of Leeds"}],"publicationDate":"2025-09-15T00:00:00.000Z","publishers":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"relationships":[{"relation":"http://purl.org/dc/terms/relation","target":"6f8b326e-d1f0-413e-b8ac-472b83c7de5e"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/1ef65c7e-08d6-4148-b751-ae106346e091"},{"code":"10.5285/1ef65c7e-08d6-4148-b751-ae106346e091","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"displayName":"Nicky Kerr","organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"pointOfContact","email":"n.r.ker@leeds.ac.uk","fullName":"Nicky Kerr","pointOfContact":"University of Leeds"},{"honorificPrefix":"Dr","familyName":"Kerr","givenName":"N.R.","organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"author","email":"n.r.ker@leeds.ac.uk","fullName":"Kerr, N.R."},{"honorificPrefix":"Dr","familyName":"Fell","givenName":"S.F.","organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"author","email":"sarah.fell@environment-agency.gov.uk","fullName":"Fell, S.F."},{"honorificPrefix":"Dr","familyName":"Kelly","givenName":"M.","organisationName":"Bowburn Consultancy","role":"author","email":"mgkelly@bowburn-consultancy.co.uk","fullName":"Kelly, M."},{"honorificPrefix":"Professor","familyName":"Brown","givenName":"L.E.","organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"author","email":"l.brown@leeds.ac.uk","fullName":"Brown, L.E."},{"organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"rightsHolder"},{"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"}],"rightsHolders":[{"organisationName":"University of Leeds","organisationIdentifier":"https://ror.org/024mrxd33","role":"rightsHolder"}],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/4326","title":"WGS 84"}],"spatialRepresentationTypes":["grid"],"spatialResolutions":[{"distance":"10","uom":"urn:ogc:def:uom:EPSG::9001"}],"temporalExtents":[{"begin":"2019-09-11","end":"2019-09-20"}],"title":"Diatom taxon abundances at river sites in the Cordillera Vilcanota region of the Peruvian Andes, 2019","topicCategories":[{"value":"environment","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment"},{"value":"biota","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota"}],"topics":["http://onto.nerc.ac.uk/CEHMD/topic/2"],"type":"dataset","uri":"https://catalogue.ceh.ac.uk/id/1ef65c7e-08d6-4148-b751-ae106346e091","useConstraints":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"}]}