Restoring the Marches Mosses to help the climate emergency and biodiversity crisis

Restoring the Marches Mosses to help the climate emergency and biodiversity crisis

John Box, member of the SWT Carbon and Climate Group, talks about how recreating bogs can help in slowing climate change with the help of BogLIFE Project Manager Robert Duff.

The Marches Mosses BogLIFE Project is restoring one of Britain’s largest lowland raised bogs at Fenn’s, Whixall & Bettisfield Mosses National Nature Reserve (NNR) and Wem Moss NNR near Whitchurch. This crucial restoration work will increase the ability of these wonderful bogs and peatlands to absorb CO2 and help to tackle the climate emergency and biodiversity crisis.

Fenn’s, Whixall, and Wem Mosses NNR on the Shropshire/Wrexham border is a superb demonstration of nature recovering. Severely damaged by drainage, afforestation and peat cutting, the restoration works over the past 30 years has restored 775 ha out of the overall area of 950 ha. Healthy peat locks carbon in, holding more carbon, acre for acre, than woodland. Restoration creates a greater depth of peat which stores even more carbon. Peat is 90% water, making the Mosses a natural protection against flooding – slowing the flow downstream.

The key is getting a properly functioning hydrological regime after previous efforts to drain the peatlands for peat extraction. If peat is allowed to dry out, or is cut for garden compost, the carbon is released into the atmosphere as CO2, thus adding to the climate crisis. Bog mosses and vegetation depend on high levels of water and over many years turn into peat that traps carbon making such peatlands a crucial store of carbon. The restoration of the raised bog and its peatlands has resulted in wildlife bouncing back including expanding populations of the rare white-faced darter dragonfly and large heath butterfly and the return of breeding snipe for the first time in 30 years.

Rewetting area of the Mosses

The really challenging task is restoring the lagg of the raised bog. This is the wet areas on the perimeter of the peatland where water from the surrounding land collects and creates a transition zone. Additional actions include the acquisition and restoration of 68 ha of pasture and plantation forestry land and the diversion of a main drain that carried water enriched with nutrients into the bog where the wonderful bog plants thrive in water that is very low in nutrients. A contaminated former scrapyard has been cleaned up, regenerating bog vegetation has been created, and the new Mammoth Tower has been constructed with viewing platforms giving a bird’s eye view of the awesome expanse of the Mosses. Go and see these amazing areas on one of the walking trails and go on a guided walk.

Climate Change 2022: Mitigation of Climate Change states unequivocally that without immediate and deep reductions in CO2 and the other greenhouse gases across all sectors, limiting global warming to 1.5°C above pre-industrial times is beyond reach. Extending and restoring and creating the global sinks that are the woodlands, forests, peatlands, wetlands, mangroves, seagrass meadows, salt marshes and kelp forests. Carbon emitted into the atmosphere needs to be removed from the atmosphere at a faster rate than it is going in. The climate emergency and biodiversity crisis mean we cannot put off until tomorrow what needs to be done today. No one is too small to make a difference. We can all play a part in reducing CO2 emissions.

This scheme was made possible thanks to a National Lottery Heritage Grant and almost £5m of European funding through the LIFE programme, which is the EU's fund for climate action and the environment. This ambitious Marches Mosses BogLIFE project is a partnership with Natural England and Natural Resources Wales. It will bring investment to the area over the next five years.

Whixall restored area

Green edged area - contaminated former scrapyard surrounded by drained and unmanaged pasture that has been colonised by young birch trees. The scrapyard has been cleaned up and remediated scrapyard, the birches removed and the pasture is being turned into bog by blocking the drains and planting plugs of bogmosses (Sphagnum) once the turf has been removed.

Purple edged area – previous pasture fed by a canalised lagg drain which has become naturally wet again as a result poor drainage and leakage from the canal. Water control structures have been created so that the underlying peatland can be kept moist and damp throughout the year and the surface is now a superb wetland known as Sinker’s Fields.

John Box is a member of the SWT Carbon and Climate Group.

Robert Duff works for Natural England and is the project manager for the Marches Mosses BogLIFE Project.