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Lowland Heath Action Plan
LO4

Lead Partner: Durham Biodiversity Partnership. leadpartner@durhambiodiversity.org.uk

Priority habitats or species:

Lowland Heath
Lowland Acid Grassland

 
 


Introduction

Lowland heath is characterized by dwarf shrubs such as heather and cross-leaved heath and is generally found below 300m in altitude. In the absence of an agreed altitudinal cut-off between lowland and upland heath in the north of England, however, and in order to define lowland heath for monitoring purposes, heathland outside the North Pennines Natural Area is taken to be lowland and vice versa.

In good condition, lowland heathland consists of a dwarf shrub layer of varying heights and structure with areas of bare ground, gorse, bogs and open water as well as scattered trees and scrub. This diversity of habitat supports a wide range of characteristic species including rare invertebrates, reptiles, flowering plants, mosses, liverworts and lichens, which are in turn, an important factor in determining habitat quality.

Lowland heath is a priority for nature conservation because it is a rare and threatened habitat. In England only one sixth of the heathland present in 1800 now remains. There are around 95,000 hectares of lowland heathland in the UK with 61% found in England. The most significant areas are in the south and south-west, Staffordshire, East Anglia, and south and west Wales. The UK has an important proportion (about 20%) of the international total of this habitat.

Durham is close to the northern limit of the habitat and as such it is relatively rare in the county. Under previous definitions around 114 ha were said to exist in County Durham and southern Tyne and Wear (Brodin 2001), the largest single site being Waldridge Fell in Chester-le-Street . This definition clearly excluded large areas of heath near to the 300m altitudinal limit, such as Hedleyhope Fell which lies between the 170m and 300m contours, and which was recently acquired by the Durham Wildlife Trust, or Knitsely Fell between 150m and 270m.

Large sites such as Hedleyhope, Knitsley and Waldridge Fells are also the most diverse, supporting a range of habitats including mires, scrub, acid grassland and areas dominated by heather & bracken. However large sites are now the exception and most sites are small and highly fragmented within the Durham portion of the Northumbrian Coal Measures Natural Area.

Lowland Acid Grassland

In many parts of the Northumbrian Coal Measures where heath has disappeared, fragments of lowland acid grassland remain, isolated from the heathland mosaic. Lowland acid grassland is also known to have developed on drained areas of floodplain meadow in Gateshead , although reasons for this are not clear. Lowland acid grassland is not necessarily species rich, but has a characteristic suite of species including heath bedstraw, heath woodrush, tormentil and wavy hair grass. It is a rare and fragmented resource in the Durham BAP area and therefore a priority habitat in its own right.

Some Brownfield sites in the Northumbrian Coal Measures, such as Tanfield Railway sidings in Gateshead , are developing naturally towards lowland heath or acid grassland.

Areas of acid grassland within heath can be botanically important in their own right, and a number of these grasslands support significant numbers of waxcap and related fungi. (see Waxcap Grassland action plan).

Related species

DBAP species that should benefit from this plan include the Small pearl-bordered fritillary. Large colonies were once found at Waldridge fell, but now only survive in heathland areas at around 300m altitude. Green hairstreak is found at Waldridge and Hedleyhope Fells, a butterfly that relies on bilberry as its larval foodplant. Nightjars prefer bare patches in heathland as nesting sites. In Durham the largest population is in Hamsterley Forest but it is thought there are smaller populations scattered throughout the county.

Adders are thought to be widespread throughout the county with Pow Hill being listed as a particularly good area for the species. Slow worms are also relatively widespread but at a much lower population level than adders, it is thought that Waldridge Fell may hold a significant population.

Current or recent activity

Durham Wildlife Trust acquired Hedleyhope Fell, 215ha of heathland near Tow Law. Extensive surveys were undertaken in 2005/06 and a management plan is currently being developed.

Durham County Council has undertaken extensive work to restore heathland at Chapman's Well, near Anfield Plain, including bracken and gorse removal and heather introduction. Areas of the SSSI have been cleared and replanted with 800 heather plants. Twenty ha of grassland outside of the SSSI have been cut and seeded with heather (2003-2006).

Durham County Council in association with the Acorn Trust has re-created heathland along the route of the new Bowes Railway cyclepath - 7 plots averaging 25 m2.

Gateshead Council's Burdon Moor restoration project has been ongoing since 2000. A fifteen ha reclaimed opencast site on an area of former heath was bought with the aim of heathland reclamation. Progress to date includes: seeding with heather and heathland grasses; planting of individual heather plants; sulphur treatment to lower soil pH; creation of shallow scrapes to form seasonal and permanent wetlands; small areas of tree planting; interpretation. (In association with Great North Forest, Northumbrian Water Environment Trust and the Countryside Agency.)

Gateshead Council's creation of 2.4 ha of lowland heath as part of the reclamation of the Watergate colliery site to form Watergate Forest Park has taken place since 1999 in association with One North East and ADAS.

Derwentside District Council established a heather nursery between 1999 and 2004 for the propagation of locally-sourced heather seedlings.

Durham County Council manage several lowland heathland sites. Works at Waldridge Fell SSSI have recently included birch removal and improvements of heather habitat. Quaking Houses Fell was designated as a County Wildlife Site in 1999.

Threats

  Intensive agricultural practices such as overgrazing and agricultural improvement.

•  Nutrient enrichment- especially from intensive livestock farming practices.

•  Fragmentation and disturbance from developments such as housing and road construction and from mineral extraction.

•  Deliberate fire lighting by vandals.

•  Intensive recreational pressures.

•  Scrub and tree encroachment, due to a lack of suitable grazing.

Objectives

  1. Safeguard key lowland heath and acid grassland sites and ensure their appropriate management for BAP species

  2. Increase the extent of lowland heathland through restoration of degraded sites or creation of new habitat on suitable sites.

  3. Manage larger areas of lowland heath to create or extend structural diversity, including areas of developing scrub and areas of fen.

More information / references

Andrews, J. (1990). Management of lowland heathlands for wildlife British Wildlife 1 pp. 336-346

English Nature (1996). Management of bare ground on dry grasslands and heathlands Peterborough

Lane, A. (1992). Practical Conservation- grasslands, heaths and moors (The Open University in association with the Nature Conservancy Council). Open University: London

Michael, N. (1993). The lowland heathland management booklet English Nature Science No. 11. Peterborough

Putwain, P.D. and Rae, P.A.S. (1998). Heathland restoration: a handbook of techniques British Gas: Southampton

Rodwell, J.S. (1992). British Plant Communities. Vol. 2 ‘Mires and heaths Cambridge University Press: Cambridge

Lowland Heath Actions
Action priorities Action Contact Action Partners Goal Date
  1. Revisit all Local Wildlife Sites (LWS) with heathland to undertake survey and condition assessment.

Jim Cokill DWT, FWAG, LAs all heathland sites on current (2006) inventories re-surveyed 2011
  1. Approach all landowners of designated sites and propose appropriate management.
Jim Cokill DWT, FWAG, LAs all LWS landowners approached 2011
  1. Assist landowners to adopt management recommendations on LWS
Jim Cokill DWT, FWAG, LAs 20% of all re-surveyed LWS in Stewardship agreements 2012
  1. Undertake an inventory of lowland heathland sites (all sites outside North Pennines Natural Area)
NE NE, DWT, FWAG, LAs all authorities to have undertaken inventory of non-designated land 2010
  1. Restore/revert potential heathland sites to heathland.
Jim Cokill DWT, NE, NEGP, FWAG, LAs   2017
  1. Take steps to ensure heathland sites have appropriate infrastructure for grazing.
Jim Cokill DWT, NEGP, NE, FWAG, LAs all designated sites to have appropriate grazing infrastructure 2010
  1. Identify heathland sites which could provide heather brashings or seed for restoration projects
NE NE, DWT, NE, FWAG, LAs make inventory available to all 2010
  1. Continue to register all under-grazed land with the North-East Grazing Project
Stephen Comber NEGP all under-grazed land registered ongoing
  1. Design & commission a project to raise community awareness of heathland biodiversity and its vulnerability – particularly in relation to fire starting.
Durham Biodiversity Partnership DBP    
  1. Create new heathland habitat on suitable sites
Durham County Council DWT, NE, FWAG, LAs    
fLOWLAND HEATH ACTION PLAN
DBAP 2006