UK Peatland Restoration: Demonstrating Success and Case Studies

INTRODUCTION TO UK PEATLANDS

Definition of Peatlands: Areas of land with a naturally accumulated layer of dead plant material (peat) formed under waterlogged conditions.
Primary Peat Formers: In the United Kingdom, mosses, specifically Sphagnum species, are the main formers of peat.
Extent and Distribution: UK peatlands cover approximately $26,000\,\text{km}^2$ , with over $60\%$ of this area located in Scotland. These areas include internationally significant examples of oceanic blanket bog, raised bogs, and fens.
Biodiversity Significance: Peatlands are high-priority habitats for biodiversity conservation. Many species depend on the extreme, waterlogged conditions found in these ecosystems.
Human Well-being and Carbon Storage: Peatlands act as a critical long-term carbon store. Wet conditions slow decomposition, allowing carbon removed from the atmosphere by plants to be stored in peat for millennia.
Archaeological and Environmental Archive: Peat preserves organic materials, including bodies (e.g., Lindow Man, found in $1984$ ) and artefacts. The pollen record stored in peat provides extensive data on past environmental conditions.
Water Resources: Occurring in high rainfall areas, peatland catchments are primary sources of drinking water. Healthy peatlands provide water filtration and regulation (mitigation and adaptation).
Historical Damage: Large areas were historically drained for agriculture and forestry, often for limited economic gain but with massive impacts on ecosystem functioning. U.K. peatlands have been over-burnt, over-drained, over-grazed, under-grazed, and built over.
Restoration Goal: The IUCN-UK National Committee Peatland Programme aims to bring $1,\!000,\!000\,\text{ha}$ of peatlands into good condition or under restorative management by $2020$ . This is consistent with international biodiversity (Nagoya), climate change, and water objectives.

THE ECOSYSTEM APPROACH TO RESTORATION

Stakeholder Engagement: Effective restoration involves aligning conservation goals with sustainable development. Stakeholders include: - Local residents and land managers. - Downstream households and businesses dependent on water (e.g., Liverpool receives water from Lake Vyrnwy in North Wales). - Recreational users and those interested in cultural and natural heritage.
Lead Bodies and Partnerships: High-performing projects often feature a strong lead body and a dedicated project manager. Partnerships between local authorities, businesses, private land managers, and NGOs are essential for landscape-scale results.
Ecosystem Health Indicators: Biodiversity acts as an indicator of ecosystem health. Monitoring in many UK sites shows that re-wetting can bring back key peat-forming vegetation within $5$ to $10$ years.
Water Quality and DOC: Damaged peatlands release high concentrations of organic carbon, causing a characteristic brown color in water. This dissolved organic carbon (DOC) is expensive to remove. Drain blocking and re-vegetation reduce DOC and erosion.
Economic Considerations: - Funding Sources: Projects utilize EU LIFE funding, Common Agricultural Policy (CAP) agri-environment schemes, and direct public/private investment. - Employment: Restoration provides jobs in remote, economically disadvantaged areas. - Market Opportunities: New funding opportunities are emerging from public and private sectors for the provision of ecosystem services like carbon sequestration and water quality.
Adaptive Management: Projects operate despite uncertainties (climate, ecosystem response) by using testing and monitoring to inform decisions. This includes trialing dam designs and Sphagnum propagation techniques.

BLANKET BOG RESTORATION CASE STUDIES

A. Dove Stone (Peak District): A partnership between RSPB and United Utilities. Over $100\,\text{ha}$ of bare peat re-vegetated using heather brash, geojute, grass seed, lime, and fertilizer. - Ecosystem Engineering: Volunteers installed over $1,\!400$ heather bales to raise water tables. - Sphagnum Trials: Includes translocation and the use of "Bead-aMoss" (gel-encapsulated Sphagnum fragments). Species used include Sphagnum fallax, S. cuspidatum, and S. papillosum.
B. Exmoor Mires (Exmoor National Park): Part of South West Water’s "Upstream Thinking" program. Aims to restore $2,\!000\,\text{ha}$ of moorland. By $2010$ , over $50\,\text{km}$ of ditches were blocked using peat, bale dams, and local timber.
C. Falkland Islands (British Overseas Territory): Contains approximately $5,\!500\,\text{km}^2$ of peat. The project focuses on dry, deep coastal peatlands (some over $10\,m$ ) dominated by Tussac grass (Poa flabellata). - Restoration: Replanting propagated seedlings to halt erosion caused by overgrazing and fire. Loss of Tussac is estimated at over $80\%$ since human habitation.
D. Flow Country (Northern Scotland): Covers over $400,\!000\,\text{ha}$ , holding $10\%$ of the UK's and $5\%$ of the world’s blanket bog. - Carbon Storage: Stores over $400 \times 10^6\,\text{tonnes}$ of carbon. - Restoration Action: Removal of trees from $2,\!300\,\text{ha}$ and installation of over $18,\!000$ dams across $15,\!600\,\text{ha}$ . - RSPB Forsinard Flows: Attracts $4,\!000$ visitors annually, contributing over $£400,\!000$ to the local economy.
E. Keighley Moor (South Pennines): Owned by Yorkshire Water. Restoration focuses on raising the water table to reduce the frequency of burning and improve drinking water quality for surroundings populations (120 reservoirs).
F. LIFE Active Blanket Bog (North Wales): Targeted Berwyn and South Clwyd Mountains SAC ( $27,\!221\,\text{ha}$ ) and Migneint-Arenig-Dduallt SAC ( $19,\!968\,\text{ha}$ ). Blocked $485\,\text{km}$ of grips and removed $249\,\text{ha}$ of forestry plantation.
G. Marble Arch Caves (Cuilcagh Mountains): Restoration of $28\,\text{ha}$ of mechanically extracted peat to ensure visitor safety in limestone caves. Employs geotextile-lined aggregate paths and water level monitoring to warn of flooding risk.
H. May Moss (North York Moors): A $150\,\text{ha}$ bog with peat up to $6\,m$ deep. Features unique populations of bog rosemary (Andromeda polifolia). Restoration involves felling, mulching, and blocking drains with peat plugs.
I. Carbon Neutral Catchment (Migneint): Ysbyty Estate ( $8,\!000\,\text{ha}$ ). Blocked $270\,\text{km}$ of ditches between Jan $2011$ and Feb $2012$ . Plans include insulation of farmhouses with Welsh wool and hydroelectric power generation.
J. MoorLIFE (Peak District and South Pennines): Aims to restore $800\,\text{ha}$ of bogs by $2015$ . Addresses "moonscape" erosion caused by $200$ years of pollution and wildfires. Techniques include helicopters dropping grass seed and spreading heather brash.
K. North Pennines AONB Peatland Programme: Largest contiguous bog in England ( $100,\!000\,\text{ha}$ ). Over last $60$ years, $10,\!000\,\text{km}$ of drains were cut. Since $2006$ , blocked $6,\!200\,\text{km}$ of drainage via $110,\!000$ peat dams.
L. Pumlumon (Mid-Wales): Experimental model for upland economies. Pilot schemes include switching to low-density cattle grazing and restoration of $270\,\text{ha}$ of peatland. Connects ecosystems for water supply to $4\,\!000,\!000$ people.
M. SCaMP (North-West England): United Utilities Sustainable Catchment Management Plan. Involved $56,\!385\,\text{ha}$ . Re-wetted $5,\!500\,\text{ha}$ of blanket bog and re-vegetated $470\,\text{ha}$ of bare peat. Returned $98.6\%$ of SSSI land to favorable/recovering condition.
O. Yorkshire Peat Partnership: Aims to restore $50\%$ ( $35,\!000\,\text{ha}$ ) of Yorkshire’s blanket bog by March $2017$ . - Survey Method: Two-stage survey using aerial photos (digitizing grips) and ground-truthing (peat depth records). - Achievement (Dec 2011): $16,\!542\,\text{ha}$ surveyed, $334\,\text{km}$ grips blocked, $33,\!000$ peat dams installed.

RAISED BOG AND FEN RESTORATION CASE STUDIES

P. Blawhorn Moss (Central Scotland): National Nature Reserve demo site for ditch blocking. Used over $1,\!000$ small dams at $12$ to $20\,m$ intervals. Techniques: plastic piling ( $30$ dams, $3.6\,m$ wide), steel piling, and $400$ heather bales.
Q. Humberhead Peatlands (Yorkshire): Largest area of lowland raised mire in England ( $2,\!887\,\text{ha}$ , $30\%$ of English resource). - Archaeology: Preserves oldest plank boats outside Egypt and a rare Bronze Age pathway ( $3,\!000$ years old). - Fauna: Fauna recorded exceeds $5,\!500$ species ( $25\%$ of British fauna).
R. Lancashire Mossland: Addresses loss of $97\%$ of original habitat. Focuses on Chat Moss ( $1.4\,\text{km}^2$ remaining). Toolkit includes re-levelling, peat bunding, and plygene sheeting.
S. Langlands Moss (South Lanarkshire): Conifer plantation removed via helicopter in $1994$ . Volunteers installed $28$ dams in the main ditch.
T. Malham Tarn (Yorkshire Dales): Features hydrological complexity (seepage mires, rain-fed bog). - Grazing: Used small Dexter cattle to graze $6.5\,\text{ha}$ of fen habitat to control willow scrub without damaging wet ground.
U. Red Moss (Edinburgh): High-access site ( $450,\!000$ nearby residents). Improved access with $370\,m$ of disabled-access boardwalk. Visitor numbers increased from $5,\!000$ to $7,\!500$ annually.
V. Great Fen (Cambridgeshire): $50$ -year project to link Woodwalton Fen and Holme Fen ( $3,\!700\,\text{ha}$ ). Currently $866\,\text{ha}$ in restoration.
W. Somerset Levels and Moors: Largest area of lowland wet grassland ( $60,\!000\,\text{ha}$ ). Greylake reserve (RSPB) was $100\,\text{ha}$ of deep-drained arable land, now restored to swamp and fen with water levels $80\,cm$ higher.
X. Anglesey and Llyn LIFE Project (North Wales): Aims to restore $751\,\text{ha}$ of fen habitat. Budget: $5\,\text{Million Euros}$ ( $2008$ - $2013$ ). Utilizes specialized Pistenbully machinery from Germany for large-scale biomass stripping.

DIALOGUE AND QUOTES FROM CASE STUDIES

Rob Stoneman (IUCN UK Peatland Programme): "Peatlands perform vital and multiple ecosystem services… Is it Gaia in action, gently pulling excess carbon out of the atmosphere?"
Ian Barker (Environment Agency): "Simple actions have the potential to create enormous benefits for water quality, flood risk, and carbon."
Ian Garland (Volunteer, Dove Stone): "It’s amazing the difference we are seeing out here… Installing bales requires a combination of judgement and brute force."
Andrew Walker (Yorkshire Water): "We need to think about the water environment from source to sea, and consider greater integration of clean and waste water processes."
Katie-jo Luxton (RSPB Cymru): "Lake Vyrnwy… demonstrates how a reservoir catchment… can also be managed as a nature conservation habitat of European importance."
Richard Watson (Marble Arch Caves): "Damage to the peatlands… threatened the long term viability of the caves as a visitor attraction. Twenty years on, we have turned the problem around."
Paul Leadbitter (Peatland Programme Manager): "There is a real momentum of coordinated effort in the UK gathering pace as a new, long overdue, appreciation for peatlands is beginning to materialise."

GLOSSARY OF TERMS

Blanket Bog: Peat bog forming in cool, wet oceanic climates; forms a "blanket" on slopes up to $30$ degrees.
Dwarf Shrubs: Plants like common heather (Calluna vulgaris), cross-leaved heath (Erica tetralix), and crowberry (Empetrum nigrum).
Geojute/Geotextiles: Natural netting materials used to prevent erosion during re-vegetation.
Grip: A local term for a drainage ditch.
Heather Bales: Bales used to slow water drainage and encourage bog pool formation.
Heather Brash: Cuttings spread on bare peat to reduce weathering and provide a medium for rooting.
Lagg Fen: The area surrounding a raised bog where bog drainage meets mineral soil.
Raised Bog: Lowland bog characterized by a dome of peat resulting from anaerobic decomposition; can reach thicknesses over $12\,m$ .
Sphagnum: Genus of mosses. UK has $34$ species, with Section Sphagnum (e.g., S. papillosum, S. austinii) being the main peat formers.
Turbidity: A measurement of suspended solids in water.