Coombe Bissett Project

Supported by the National Lottery Heritage Fund

Download our project leaflet here

Coombe Bissett Down nature reserve is a 70.6 hectares chalk downland valley south west of Salisbury. 

The Coombe Bissett Down Project (CBDP) is funded by the National Lottery Heritage Fund. The three year project has involved an initial land purchase that has doubled the size of the original reserve, and the start of a programme of work to revert one of the newly purchased arable fields back to species-rich chalk downland. A key objective of the project is an enhanced visitor experience, with new opportunities for people to enjoy and learn about this spectacular site. Visitors will be able to follow the new signs, and waymarked routes around the reserve and enjoy the views from a series of new benches.

In addition we have a programme of events that will take place throughout the year, from lambing sessions to art classes, Walking for Health to searches for shieldbugs.

From May to September there are wildflowers to be found, from cowslip and harebells to kidney vetch and Devils-bit scabious. These attract lots of butterflies including adonis blue and dingy skipper. Yellowhammer, skylarks and whitethroat can be heard singing from scrub or overhead and kestrels hover over small mammals below. Take a look at our seasonal spotters sheets to see which species you can find; Spring/Summer, Autumn/Winter.

People have also had a close relationship with this site for many years. There have been artefacts from the Neolithic Age, Bronze Age, Iron Age and Roman period on Coombe and the surrounding downs. Steep slopes on the site are patterned by medieval terraces called strip lynchetts which were used for grazing. We have a flock of hardy Herdwick sheep and light footed Dexter cattle that crop the grass, maintaining the chalk downland habitat as a part of the reversion process. Why not try writing your own haiku poem to show us what the reserve means to you?

Visitors can come here to enjoy the sweeping views, bask in the beauty of nature and the sound of birdsong. To keep our birds happily singing we ask that dogs are kept on leads and any waste is cleared up. There are many lovely walks of varying difficulty around the site.

With the new NLHF supported project visitors have now got the opportunity to get more involved with the nature they come here to enjoy, this can be through surveying, our training and event days or volunteering in a number of roles. This large site couldn’t be maintained without a wonderful team of volunteers, please take a look at our volunteering page for more opportunities.

To keep updated with improvements to the reserve and to join our official Friends of Coombe Bissett Down group, email us at [email protected] 

 

Picture: Cowslips (C) Barry Craske

Southern Reserves Manager, Ashley White, reflects on the conservation works that have been carried out at Coombe Bissett Down over the past three years of the project.

What are the main objectives?

Restore 17 hectares of arable land to species-rich chalk grassland

The restoration process will enable us to buffer the SSSI downland and create significant ecological connectivity between the reserve and other species-rich downland in the local area, increasing this priority habitat and benefitting the threatened species it supports.

Arable reversion

Wildflowers are easily outcompeted by other plants if soil fertility is high. For the first two years of the project spring barley was grown in this field without added fertiliser, until samples indicated that the soil nutrients had been sufficiently reduced. A final crop was harvested in early autumn 2019, and the field was cultivated several times before it was sown that October with wildflower seed that had previously been collected from areas of species-rich grassland elsewhere on the nature reserve. 

The newly sown field was visited in June, July and August 2020. The visits were encouraging, with target wildflowers yellow rattle (an annual grass hemiparasite sown to keep grass growth in check), viper’s-bugloss (a biennial), ox-eye daisy, hoary plantain, black knapweed, sainfoin, bird’s-foot trefoil, and wild carrot (all perennials) observed in flower. While the sward remained relatively open, with plenty of bare ground, additional seed was purchased for oversowing, which was carried out in autumn 2020.

During the first few years seeds of volunteer crops and other non–target species can be expected to germinate. These are usually short lived annual or biennial plants that can be prevented from going to seed through a combination of cutting and sheep grazing, and will gradually reduce over time.

Monitoring of the establishing flora will continue over successive springs and summers. If this interests you and you would like to assist with survey and monitoring as a volunteer please get in touch with [email protected]

         

Above left to right: ox-eye daisy, Viper's bugloss, and wild carrot

New features to support and encourage wildlife

These have included:

  • The enhancement of the Beeches Hill field through plug planting of Devil’s bit scabious for target butterfly species marsh fritillary.
  • The construction of a large chalk butterfly bank (see previous blogs Building a butterfly bank and Scattering and nattering at Coombe Bissett Down ), planted and sown with the food plants of target butterflies: small blue, Adonis blue, and dingy skipper.
  • Planting new species-rich hedgerows to improve connectivity between existing hedges, and providing a source of food and shelter for invertebrates, birds and small mammals.
  • Provision of winter food to support farmland birds
  • Installation of nest boxes on farm buildings for house sparrow, common swift, barn owl and kestrel.

Above: Establishing bird's-foot trefoil on the butterfly bank in July 2020

Improve the sustainability of the farm and conservation management of Coombe Bissett Down nature reserve

Farm infrastructure has been constructed to support the conservation grazing. Items included new stock fencing and field gates to secure reserve boundaries, water supply and troughs, and livestock housing to allow greater flexibility of grazing.

Habitat management tools have been purchased. The bridleway from the A354 has been upgraded, providing an access point for staff and volunteers to transport tools and materials to the centre of the reserve. If you are interested in conservation volunteering at Coombe Bissett Down or livestock checking at some of our other reserves in southern and mid Wiltshire please contact  [email protected]