Algal primary production of Welsh upland rivers in response to organic matter addition (2013)
bibliographic citation: 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
description: 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.
provenance: ProvenanceStatement
  label: 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.
spatial: Location
publisher: NERC Environmental Information Data Centre
subject: Wales
subject: Plynlimon
subject: Llyn Brianne
subject: algal production
subject: land use
subject: ecosystem services
subject: decomposition
subject: biological diversity
was generated by: https://gtr.ukri.org/projects
type: Dataset
available: 2017-03-28
landing page: https://doi.org/10.5285/f13b0975-6af4-4315-9e4f-63a1cb4bd796
license: OGL-UK-3.0.ttl
rights: RightsStatement
  copyright notice: copyright Cardiff University
rights: RightsStatement
  copyright notice: copyright Imperial College London
access rights: UNRS
distribution:
  access URL: https://data-package.ceh.ac.uk/data/f13b0975-6af4-4315-9e4f-63a1cb4bd796
  license: OGL-UK-3.0.ttl
  rights: RightsStatement
    copyright notice: copyright Cardiff University
  rights: RightsStatement
    copyright notice: copyright Imperial College London
  access rights: UNRS
  format: Comma-separated values (CSV)
creator: Durance, I.
creator: Feeley, H.B.
creator: Ormerod, S.J.
creator: Gutierrez-Canovas, C.
language: en

Durance, I.
type: Person
family name: Durance
given name: Isabelle
member: Cardiff University

NERC Environmental Information Data Centre
type: Organization

Durance, I.
type: Person
family name: Durance
given name: I.
member: Cardiff University

Feeley, H.B.
type: Person
family name: Feeley
given name: H.B.
member: Cardiff University

Ormerod, S.J.
type: Person
family name: Ormerod
given name: S.J.
member: Cardiff University

Pye, M.C.
type: Person
family name: Pye
given name: M.C.
member: Cardiff University

Sauvadet, A.
type: Person
family name: Sauvadet
given name: A-L.
member: Cardiff University

Gutierrez-Canovas, C.
type: Person
family name: Gutierrez-Canovas
given name: C.
member: Cardiff University

Woodward, G.
type: Person
family name: Woodward
given name: G.
member: Imperial College London

Wales
type: Concept

land use
type: Concept

ecosystem services
type: Concept

decomposition
type: Concept

biological diversity
type: Concept

Cardiff University
type: Organization

Imperial College London
type: Organization