37e7a1b3-0564-4c6f-84df-a9635edb57b4 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 2025-11-13T16:22:33 UK GEMINI 2.3 OSGB 1936 / British National Grid Suspended organic matter stocks of Welsh upland rivers in response to organic matter addition (2012-2013) 2017-04-20 publication 2013-05-26 creation https://catalogue.ceh.ac.uk/id/37e7a1b3-0564-4c6f-84df-a9635edb57b4 10.5285/37e7a1b3-0564-4c6f-84df-a9635edb57b4 doi: Durance, I., Gutierrez-Canovas, C., Pye, M.C., Ormerod, S.J. (2017). Suspended organic matter stocks of Welsh upland rivers in response to organic matter addition (2012-2013). NERC Environmental Information Data Centre 10.5285/37e7a1b3-0564-4c6f-84df-a9635edb57b4 These data are suspended organic matter stocks of coarse and fine particulate organic matter 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). To characterise the suspended organic matter of the studied streams, water was filtered to collect monthly samples from December 2012 to January 2013 (before deciduous leaf addition) and from February to April 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 leaf addition in moorland and conifer forested rivers. Dr Isabelle Durance was responsible for organising the surveys, Marian Pye was 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/10.5285/37e7a1b3-0564-4c6f-84df-a9635edb57b4 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 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 Pye, M.C. Cardiff University m.pye@bangor.ac.uk 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 Durance, I. Cardiff University durance@cardiff.ac.uk pointOfContact NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC Environmental Information Data Centre info@eidc.ac.uk publisher Cardiff University EMAIL NOT PROVIDED owner notPlanned Environmental Monitoring Facilities theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication land use decomposition ecosystem services GEMET - Concepts, version 4.1.3 2019-01-28 creation Wales GeoNames 2006-01-01 creation Plynlimon Llyn Brianne diversity suspended organic matter otherRestrictions no limitations otherRestrictions This resource is made available under the terms of the Open Government Licence otherRestrictions © Cardiff University otherRestrictions If you reuse this data, you should cite: Durance, I., Gutierrez-Canovas, C., Pye, M.C., Ormerod, S.J. (2017). Suspended organic matter stocks of Welsh upland rivers in response to organic matter addition (2012-2013). NERC Environmental Information Data Centre https://doi.org/10.5285/37e7a1b3-0564-4c6f-84df-a9635edb57b4 textTable 1 English utf8 biota environment 2012-12-01 2013-04-30 -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/sd/37e7a1b3-0564-4c6f-84df-a9635edb57b4.zip Supporting information Supporting information available to assist in re-use of this dataset information https://data-package.ceh.ac.uk/data/37e7a1b3-0564-4c6f-84df-a9635edb57b4 Download the data Download a copy of this data download 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 suspended organic matter were collected by filtering water. Deciduous leaves were added directly to the stream and by fixing 'Onion bags' of leaves the stream bed and bank. Samples were collected on six occasions, December (3-10/12/2012) January (3-16/01/2013), February (4-7/02/2013), March (11-14/03/2013), April (3-8/04/2013) and May (22-26/05/2013) in all the streams in both the upstream reference zones and downstream experimental zones. Upon collection,Suspended Organic Matter (SOM) samples were refrigerated at 4 degrees celsius, returned to the laboratory and frozen within 24 hours. Frozen SOM samples were then freeze-dried at -20 degrees Celsius for 48 to 72 hours and weighed to the nearest 0.0001gramme. Freeze-dried SOM samples were ground, homogenised and subsampled (3mg ±0.3mg) for analysis of elemental (C, N) and stable isotopic (delta-13C, delta-15N) composition on a mass spectrometer (University of California Davis Stable Isotope Facility). All SOM samples were corrected for inorganic content by combusting a subset (%) of samples from each site at 550 degrees Celsius for 5 hours and applying an ash-free conversion factor. Results were recorded in an Excel spreadsheet. Data was exported to a comma separated value files for ingestion into the Environmental Information Data Centre (EIDC).