Acaster South Ings

Acaster South Ings is a Site of Special Scientific Interest, or SSSI, near York, England. It consists of two alluvial flood-meadows, and was designated in 1988 because it supports diverse fauna and flora, some of which is rare in the Vale of York area. One of the rarities is the tansy beetle, which feeds on the leaves of the tansy plant.

Acaster South Ings
Site of Special Scientific Interest
Acaster South Ings, north gateway
Area of SearchNorth Yorkshire
Grid referenceSE594437
InterestBiological
Area38.3 ha (95 acres)
Notification1988
Location mapMagic Map (Defra)

Site location and designation

Acaster South Ings is a 38.3 hectares (95 acres) biological Site of Special Scientific Interest (SSSI),[1] consisting of "two large alluvial flood-meadows."[2] The meadows are adjacent to the River Ouse and approximately 4 miles (6.4 km) south of York. Such wet grasslands are considered rare in the United Kingdom due to contemporary "drainage and agricultural improvement."[1][3] The site is accessed on foot via a public footpath along the Ouse riverbank, from Acaster Malbis via Acaster Marine.[4]

The SSSI was first notified in 1988, and is classified under a wildlife enhancement scheme, due to the presence of grasslands containing rare plant and insect life.[5] It is one of nine wildlife SSSIs in the Greater York area, the other designated sites being Strensall Common, Heslington Tilmire, Askham Bog, Fulford Ings, Naburn Marsh, Church Ings, Derwent Ings and River Derwent.[6] It is one of four riverside hay meadow SSSIs listed by the Yorkshire Dales Rivers Trust, alongside Clifton Ings and Rawlcliffe Meadows, Fulford Ings and Naburn Marsh.[7]

Significant site content

Flora

There are grasses such as great burnet, red fescue, creeping bent, meadow foxtail, Yorkshire fog and crested dog's tail.[1]

  • Great burnet
  • Red fescue
  • Creeping bent
  • Meadow foxtail
  • Yorkshire fog
  • Crested dog's tail

Flowering plants covering the flood meadow include bird's foot trefoil, ox eye daisy, common sorrel, red clover, common knapweed, meadowsweet, ribwort plantain and meadow buttercup. There are "distinct stands throughout the grassland" of common bistort, and some areas which contain common meadow rue, and pepper saxifrage.[1]

  • Bird's foot trefoil
  • Ox eye daisy
  • Sorrel
  • Red clover
  • Knapweed
  • Meadowsweet

The site is protected, by earth dykes, from potential flooding from the adjacent River Ouse. These dykes provide plant habitat which is drier than the flood meadows. Some plants which prefer this drier habitat are meadow cranesbill, field mouse ear and clustered bellfower. Along the riverside are trees and shrubs such as osier and hawthorn, and plants taller than those in the meadows, including tansy, butterbur, common mugwort, reed canary grass and great willowherb.[1]

  • Looking north across Acaster South Ings: grassland (left), dyke (right), riverside shrubs (background)
  • Meadow cranesbill
  • Field mouse ear
  • Clustered bellflower
  • Tansy
  • Osiers at Acaster South Ings

Fauna

There are two beetles which are protected here. The rare tansy beetle[8] feeds on the leaves of the tansy plant, and Aphthona nigriceps (a flea beetle) lives on meadow cranesbill.[1][nb 1] The curlew, a wading bird, breeds here. This is "one of few suitable breeding areas for waders" in the Vale of York, so dog walkers are advised to keep dogs on leads during the spring breeding season.[1][nb 2]

  • Tansy beetle
  • Curlew

Maintenance

"Active management" is required, to conserve the above flora and fauna.[9] Farming practices for the protection of the above species are: "continuation of traditional management for haycropping followed by aftermath grazing in late summer to early autumn."[1] To prevent tall growth and to avoid build-up of decayed vegetation, the fields are cut or mowed in early July after the curlews have bred and the protected plants have set seed. Grazing animals are removed in autumn. There is "regular and careful maintenance of surface drainage including ditches and drains."[9] The condition of the site is described by Natural England as "unfavourable - recovering."[10] The unfavourable condition was specified as "unfavourable development" in Hansard in 2004.[11]

Development and risk assessment

In 2018 the company Renewables First assessed the area for potential effects of the proposed Naburn Weir Hydroelectric Project. The assessment document concluded that the development was "not expected to have an adverse impact on the nearby SSSIs."[12]

Notes
  1. An image of Aphthona nigriceps can be seen here, and a description of it is here.
  2. Natural England's notice on the site's entrance gate requests visitors to keep dogs on the lead, and to keep to the footpath on the dyke along the riverside.

References
  1. Christian, Simon (1988). "Designated sites citation: Acaster South Ings" (PDF). Designated sites Natural England. Natural England. Retrieved 12 December 2019.
  2. Symons, Bill (2014). "Biodiversity Action Plan 2013/2014, Table 3 national designations Vale of York" (PDF). Yorkconsort.gov.uk. Derwent House, Crockey Hill, York, YO19 4SR: York Consortium of Drainage Boards. p. 13. Retrieved 12 December 2019.CS1 maint: location (link)
  3. "Magic Map: Acaster South Ings". Magic.defra.gov.uk. Natural England. Retrieved 10 December 2019.
  4. "Footpaths map of Acaster Malbis area" (PDF). acastermalbis-pc.gov.uk/. Acaster Malbis Parish Council. Retrieved 12 December 2019.
  5. Simon, Christian (1 May 1988). "Designated sites view: Acaster South Ings SSSI". Designatedsites.naturalengland.org.uk. Natural England. Retrieved 10 December 2019.
  6. Hammond, Martin (2010). "City of York bioversity audit 20107.1.: Review of wildlife sites in the city of York" (PDF). Democracy.york.co.uk. City of York Council. p. 43. Retrieved 12 December 2019.
  7. "About river and catchment". Yorkshire Dales Rivers Trust. Yorkshire Dales Rivers Trust. 2014. Retrieved 12 December 2019.
  8. "Chrysolina graminis (Linnaeus, 1758) [Tansy Beetle]". Nationally Biodiversity Network. 2012–2013. Retrieved 20 January 2020.
  9. "Views about management" (PDF). Designated sites Natural England. Natural England. 1988. Retrieved 12 December 2019.
  10. "Designated sites view: Acaster South Ings SSSI". Designated sites Natural England. Natural England. 1988. Retrieved 12 December 2019.
  11. "Hansard: Sites of Special Scientific Interest". www.parliament.uk. House of Commons and House of Lords. 1 September 2004. Retrieved 12 December 2019.
  12. Clutterbuck, Kelly (September 2018). "Naburn Weir Hydroelectric Project. Water Framework Directive Assessment. 3.28. Biodiversity and fish passage". Cached. Renewables First. p. 10. Retrieved 12 December 2019.

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