1ef65c7e-08d6-4148-b751-ae106346e091 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-12-05T13:44:36 UK GEMINI 2.3 WGS 84 Diatom taxon abundances at river sites in the Cordillera Vilcanota region of the Peruvian Andes, 2019 2025-09-15 publication https://catalogue.ceh.ac.uk/id/1ef65c7e-08d6-4148-b751-ae106346e091 10.5285/1ef65c7e-08d6-4148-b751-ae106346e091 doi: Kerr, N.R., Fell, S.F., Kelly, M., Brown, L.E. (2025). Diatom taxon abundances at river sites in the Cordillera Vilcanota region of the Peruvian Andes, 2019. NERC EDS Environmental Information Data Centre 10.5285/1ef65c7e-08d6-4148-b751-ae106346e091 [This dataset is embargoed until July 1, 2026]. This dataset provides diatom taxon abundance data from 12 rivers in the Cordillera Vilcanota region of the Peruvian Andes. 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. Full details about this dataset can be found at https://doi.org/10.5285/1ef65c7e-08d6-4148-b751-ae106346e091 Nicky Kerr University of Leeds n.r.ker@leeds.ac.uk pointOfContact Kerr, N.R. University of Leeds n.r.ker@leeds.ac.uk author Fell, S.F. University of Leeds sarah.fell@environment-agency.gov.uk author Kelly, M. Bowburn Consultancy mgkelly@bowburn-consultancy.co.uk author Brown, L.E. University of Leeds l.brown@leeds.ac.uk author University of Leeds EMAIL NOT PROVIDED owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher diatom GEMET - Concepts, version 4.1.3 2019-01-28 creation Biodiversity otherRestrictions Embargoed otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Kerr, N.R., Fell, S.F., Kelly, M., Brown, L.E. (2025). Diatom taxon abundances at river sites in the Cordillera Vilcanota region of the Peruvian Andes, 2019. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/1ef65c7e-08d6-4148-b751-ae106346e091 grid 10 English utf8 environment biota 2019-09-11 2019-09-20 -75.545 -70.046 -17.393 -8.885 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 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.