Cors Erddreiniog NNR (Anglesey & Llyn Fens LIFE Project)

Introduction

Cors Erddreiniog is one of seven sites in the 467 ha Anglesey Fens SAC - the complex containing the most extensive areas of fen in western Britain, 42% of the total Welsh resource of alkaline fen and 56% of the Welsh resource of calcareous fen. Degradation of the site has been addressed thanks to the Anglesey and Lleyn Fens LIFE project, which aimed to bring 759 ha of fen into recovery.

Description

Cors Erddreiniog is the largest of a suite of wetlands internationally famed for unusual and diverse vegetation. This large area of fen is home to common reed (Phragmites), great fen sedge (Cladium mariscus) and blunt flowered sedge (Cyperus obtusiflorus), as well as orchids, insectivorous plants, dragonflies and grasshopper warblers. The site is also one of the last in Anglesey where marsh fritillary can be found.

Restoration Delivered

Enriched soil and upper peat layers were removed from over 20 ha to rejuvenate the development of new fen habitat - making this was one of the largest fen restoration projects in Europe at the time. Large scale hydrological restoration also took place, through a programme of ditch blocking and separating enriched water from spring water, redirecting enriched water away and spring water into the fens. Introducing extensive grazing by Welsh ponies and cattle has helped to prevent grasses from dominating. This followed a programme of biomass removal from the sites. In addition, the project worked with local farmers to establish good working relationships. This two-way relationship provided additional grazing land for the farmers, whilst supplying a conservation grazing regime on the fen.

Some of the key items of work on this particular site included:

  • Large scale hydrological restoration through installation of weir on main outfall
  • Restoration of marginal spring inputs through hydrological pathway restoration
  • Hydroseral reversion through peat cutting 
  • Grazing.

Site Activity

Please note the figures below account for work carried out over the entirety of the Anglesey and Lleyn Fens LIFE project, which included Cors Erddreiniog:

  • Removed and reprofiled 100,000 tonnes of damaged soil over 20 ha
  • Mowed and burnt over 200 ha of rank overgrown fen
  • Opened up over 500 ha of land to grazing
  • Removed over 100 ha of scruh that was shading out fen species
  • Entered into an agreement with landowners to manage over 200 ha of land in a mutually beneficial way
  • Restored over 3.5 km of springs, streams and seepages
  • Got water levels right over 6 km of ditiches
  • Brought over 200 ha of land into direct conservation management and improved public access.
{"zoom":12,"lat":"53.312800","lon":"-4.298000","markers":{"0":{"lat":53.3128,"lon":-4.298}}}

Project Name: Cors Erddreiniog NNR (Anglesey & Llyn Fens LIFE Project)

Organisation / Lead partner: Natural Resources Wales

Location: Capel Coch, Anglesey

Approximate area covered: 289 ha

Conservation Status: Site of Special Scientific Interest (SSSI), Special Area of Conservation (SAC), National Nature Reserves(NNR)

Predominately: Lowland

Peat Habitats: Fen

Project Type: Restoration

Year Project Began: 2009

Project End Date: 2014

Useful Downloads:

    Cors Fochno Credit Drew Buckley Photography
    Conference 2022 - Registration Opening SoonOpen Soon - registration & call for content contributions
    Peatland Code version 1.2
    New version of the Peatland Code launchedAn update to the Peatland Code, including a separate guidance document, is now available.
    IUCN UK Peatland Programme Newsletter: Winter Edition 2022
    IUCN UK Peatland Programme Newsletter: Winter Edition 2022Read the latest IUCN UK Peatland Programme newsletter.
    Peat-free image
    Peat-free Horticulture – A reality and an opportunityWe have reached a key moment for bringing about a transition in the way we garden and supply…
    PC Projects Feb 22
    An update on the Peatland CodeThe Peatland Code continues to grow rapidly with 79 projects now registered and 10,300 ha of…
    The new CNPA Peatland ACTION team
    Unlocking contractor capacity to lock up carbon in the CairngormsThe Cairngorms National Park Authority’s (CNPA) Peatland ACTION Officers have facilitated over 2,…
    Moors for the Future Partnership: Cleaner water video
    Moors for the Future Partnership presents: Blanket bogs are worth protecting video seriesMoors for the Future Partnership has developed five videos to help people understand the multiple…
    Restoration works at East Gill in Nidderdale
    Yorkshire Peat Partnership celebrates another successful yearAs Yorkshire Peat Partnership (YPP) heads into the new restoration season, they take a moment to…
    The Peatlands of Britain and Ireland: World Wetlands Day
    World Wetlands Day 2022: 'The Peatlands of Britain and Ireland' launched as e-bookTo celebrate World Wetlands Day 2022, 'The Peatlands of Britain and Ireland' by the IUCN UK…
    South West Peatland Partnership vacancies
    South West Peatland Partnership job vacanciesThe South West Peatland Partnership (Exeter, Devon) have 8 job vacancies available to support their…
    UNFCCC COP26
    Reflections from the UNFCCC COP26 Peatland PavilionThe first COP26 Peatland Pavilion stood out as one of only a handful of thematic pavilions and one…
    The Peatlands of Britain and Ireland cover
    'The Peatlands of Britain and Ireland' by Clifton BainThe IUCN UK Peatland Programme's Clifton Bain completes his trilogy with this look at the Peatlands…