Cors Caron (New LIFE for Welsh Raised Bogs)

The LIFE Welsh Raised Bogs project will help seven of the most important raised bogs in Wales become even better places for wildlife. What’s special about raised bogs? Raised bogs might look barren, but did you know they are great for the environment, wildlife and people? They: • give a home to rare plants and wildlife • store carbon from the atmosphere • store and purify water • give a fascinating insight into our environmental history • offer great places to visit and enjoy nature at its best. Cors Caron is one of the largest bogs in the project. Restoration work will also take place at Cors Fochno National Nature Reserve (NNR) and bogs near Trawsfynydd, Fishguard, Crosshands, Crickhowell and Builth Wells. This work has been funded by an EU LIFE programme grant and Natural Resources Wales, with support from Welsh Government and the Snowdonia National Park Authority. (LIFE16 NAT/UK/000646).

Cors Caron is one of the largest actively growing raised bogs in the lowlands of Britain – with peat up to 10 metres deep. The bog’s surface is covered by a tapestry of gold and red sphagnum mosses.

Restoration work taking place here will: • improve the conditions of the peatland • remove invasive species and scrub • introduce light grazing - all in partnership with local communities, landowners and contractors.

Work has been ongoing since September 2020 to restore Cors Caron by creating peat bunds. The work aims to restore more natural water levels at Cors Caron National Nature Reserves (NNR). The peat bunds, or low-level banks of peat as they are also called, are approximately 25cm high and follow the natural contours of the raised bogs domes. The bunds are designed to slow the loss of water in the upper layer of the raised peat dome, holding the natural water level on the bog for longer. A few months after starting the work, there is already encouraging signs that a more natural water level is starting to form. The sites have suffered from drainage and peat cutting in the past, and this has affected the water table level so that it is below what it should be for a healthy raised bog – particularly in summer. Restoring natural water levels on raised bogs will ensure they stay wetter for longer, helping to create areas where important sphagnum (bog moss) can establish and thrive. Sphagnum moss is the habitat engineer of raised bogs with its amazing ability to hold onto water and resist decay, its partly decayed remains forms dark brown peat soil. A diversity of sphagnum types is a sign of a healthy bog, and the peat it creates naturally absorbs and stores tonnes of carbon from the atmosphere, helping in the fight against climate change. In September the project created over 5,790 metres (4 miles) of peat bunds on Cors Caron NNR in October. The long-term objective with this method is to stabilise the water levels within 5cm of the bog surface for 95% of the time, the other 5% of the time water levels should not drop below 30cm of the bog surface. By creating these bunds bog habitat will benefit and be returned to good condition helping to create new peat and lock in more carbon.