f13b0975-6af4-4315-9e4f-63a1cb4bd796 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 2025-11-13T16:25:26 UK GEMINI 2.3 OSGB 1936 / British National Grid Algal primary production of Welsh upland rivers in response to organic matter addition (2013) 2017-03-28 publication 2013-03-14 creation https://catalogue.ceh.ac.uk/id/f13b0975-6af4-4315-9e4f-63a1cb4bd796 10.5285/f13b0975-6af4-4315-9e4f-63a1cb4bd796 doi: Durance, I., Feeley, H.B., Ormerod, S.J., Pye, M.C., Sauvadet, A., Gutierrez-Canovas, C., Woodward, G. (2017). Algal primary production of Welsh upland rivers in response to organic matter addition (2013). NERC Environmental Information Data Centre 10.5285/f13b0975-6af4-4315-9e4f-63a1cb4bd796 These data are algal production values in eight Welsh upland rivers with contrasting land-use, moorland and exotic conifer, in response to riparian deciduous leaf addition. Eight sampling reaches were chosen at two sites, Llyn Brianne (4 reaches) and Plynlimon (4 reaches). The experiment consisted of adding deciduous leaves to half of the reaches whilst the other half were maintained as a control (no addition of deciduous leaves). In order to characterise the algal production of the studied streams, algal biofilm samples were collected from tiles previously placed, during January 2013 (before deciduous leaf addition) and March 2013 (after deciduous leaf addition) in each sampling reach. The main goal of this survey was to examine how aquatic biodiversity and organic matter stocks respond to deciduous leaf addition in moorland and conifer forested rivers. Dr Isabelle Durance was responsible for organising the surveys, Dr Hugh Feeley, Dr Anne-Laure Sauvadet and Marian Pye were in charge of collecting, processing and sorting the samples. The work was carried out under Diversity in Upland Rivers for Ecosystem Service Sustainability (DURESS) project (Grant reference NERC NE/J014818/1). DURESS was a project funded by the Natural Environment Research Council (NERC) Biodiversity and Ecosystem Service Sustainability (BESS) programme. Full details about this dataset can be found at https://doi.org/10.5285/f13b0975-6af4-4315-9e4f-63a1cb4bd796 Durance, I. Cardiff University durance@cardiff.ac.uk pointOfContact Durance, I. Cardiff University durance@cardiff.ac.uk https://orcid.org/0000-0002-4138-3349 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Feeley, H.B. Cardiff University hughfeeley@gmail.com https://orcid.org/0000-0003-0386-0586 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Ormerod, S.J. Cardiff University ormerod@cardiff.ac.uk https://orcid.org/0000-0002-8174-302X ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Pye, M.C. Cardiff University m.pye@bangor.ac.uk author Sauvadet, A. Cardiff University sauvadetAL@cardiff.ac.uk author Gutierrez-Canovas, C. Cardiff University cayeguti@um.es https://orcid.org/0000-0002-6785-4049 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Woodward, G. Imperial College London woodward@imperial.ac.uk author NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC Environmental Information Data Centre info@eidc.ac.uk publisher notPlanned Environmental Monitoring Facilities theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication land use ecosystem services decomposition biological diversity GEMET - Concepts, version 4.1.3 2019-01-28 creation Wales GeoNames 2006-01-01 creation Plynlimon Llyn Brianne algal production otherRestrictions no limitations otherRestrictions This resource is made available under the terms of the Open Government Licence otherRestrictions © Cardiff University otherRestrictions © Imperial College London otherRestrictions If you reuse this data, you should cite: Durance, I., Feeley, H.B., Ormerod, S.J., Pye, M.C., Sauvadet, A., Gutierrez-Canovas, C., Woodward, G. (2017). Algal primary production of Welsh upland rivers in response to organic matter addition (2013). NERC Environmental Information Data Centre https://doi.org/10.5285/f13b0975-6af4-4315-9e4f-63a1cb4bd796 textTable 1 English utf8 biota environment -3.785 -3.641 52.107 52.518 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/f13b0975-6af4-4315-9e4f-63a1cb4bd796 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/f13b0975-6af4-4315-9e4f-63a1cb4bd796.zip Supporting information Supporting information available to assist in re-use of this dataset information 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 Each stream was divided into an upstream control zone and a downstream experimental zone. Samples of algal biofilm were collected from tiles previously placed on each sampling site. Deciduous leaves were added directly to the stream and by fixing 'Onion bags' of leaves the stream bed and bank. Algal samples were collected two occasions, January (3-16/01/2013), and March (11-14/03/2013) in all the streams in both the upstream reference zones and downstream experimental zones. Six experimental units (algal tiles) were placed randomly in each reach of the experimental sites before and after the manipulation. Chlorophyll a accrual on tiles was used as a proxy measure of algal production and herbivory rates measured over the sampling periods (after Hladyz et al. 2011). Unglazed ceramic tiles (100 millimetres x 100 millimetres) were glued in pairs to house bricks, which were fixed to the benthos with a rebar stake placed through a hole in the brick centre. The vertical edges of one tile on each brick were coated with a layer of petroleum jelly to deter crawling gazers, and the other tile was left as a control, to assess the strength of grazing pressure. Chlorophyll was extracted using acetone, and the concentration subsequently measured spectrophotometrically (after Layer et al. 2010). Data was entered into an Excel spreadsheet and then exported as a comma separated value file for ingestion into the Environmental Information Data Centre.