NVC community CG7 (Festuca ovina - Hieracium pilosella - Thymus praecox/pulegioides grassland) is one of the calcicolous grassland communities in the British National Vegetation Classification system. It is one of three short-sward communities associated with heavy grazing, within the lowland calcicolous grassland group, and is regarded as the eastern counterpart of "typical" chalk grassland (community CG2).

It is a comparatively widely distributed community. There are five subcommunities.

Community composition

The following constant species are found in this community:

The following rare species are also associated with the community:

Distribution

This community is found scattered throughout chalk grassland sites in southern England, particularly in The Brecks on the Norfolk/Suffolk border, with outlying clusters in the Yorkshire Wolds (also on chalk), and on Carboniferous limestone in Derbyshire and Mendip Hills.

Subcommunities

There are five subcommunities:

  • the Koeleria macrantha subcommunity
  • the Cladonia spp. subcommunity
  • the Ditrichum flexicaule - Diploschistes scruposus var. bryophilus subcommunity
  • the Fragaria vesca - Erigeron acer subcommunity
  • the Medicago lupulina - Rumex acetosa subcommunity

References

  • Rodwell, J. S. (1992) British Plant Communities Volume 3 - Grasslands and montane communities ISBN 0-521-39166-0 (hardback), ISBN 0-521-62719-2 (paperback)
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.