Date (Publication)

2025-11-03

Date (Creation)

2025-10-29

Identifier

https://catalogue.ceh.ac.uk/id/6f8b326e-d1f0-413e-b8ac-472b83c7de5e

Identifier

doi: / 10.5285/6f8b326e-d1f0-413e-b8ac-472b83c7de5e

Other citation details

Kerr, N., Fell, S.C., Kelly, M., Brown, L.E. (2025). Diatom taxon abundances at river sites in the Cordillera Blanca region of the Peruvian Andes, 2020. NERC EDS Environmental Information Data Centre 10.5285/6f8b326e-d1f0-413e-b8ac-472b83c7de5e

GEMET - Concepts, version 4.1.3

• diatom

Keywords

• Biodiversity

Access constraints

otherRestrictions Other restrictions

Other constraints

Embargoed

Use constraints

otherRestrictions Other restrictions

Other constraints

This resource is available under the terms of the Open Government Licence

Use constraints

otherRestrictions Other restrictions

Other constraints

If you reuse this data, you should cite: Kerr, N., Fell, S.C., Kelly, M., Brown, L.E. (2025). Diatom taxon abundances at river sites in the Cordillera Blanca region of the Peruvian Andes, 2020. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/6f8b326e-d1f0-413e-b8ac-472b83c7de5e

Spatial representation type

grid Grid

Distance

10  urn:ogc:def:uom:EPSG::9001

Metadata language

EnglishEnglish

Character set

utf8 UTF8

Topic category

• Biota
• Environment

Begin date

2020-05-07

End date

2020-05-16

Unique resource identifier

WGS 84

Distribution format

• Comma-separated values (CSV) ()

Hierarchy level

dataset Dataset

Other

dataset

Statement

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.

File identifier

6f8b326e-d1f0-413e-b8ac-472b83c7de5e XML

Metadata language

EnglishEnglish

Character set

ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1

Hierarchy level

dataset Dataset

Hierarchy level name

dataset

Date stamp

2025-11-24T14:41:35

Metadata standard name

UK GEMINI

Metadata standard version

2.3