Calcareous Grassland

Calcareous grassland (or alkaline grassland) is an ecosystem associated with thin basic soil, such as that on chalk and limestone downland. Plants on calcareous grassland are typically short and hardy, and include grasses and herbs such as clover. Calcareous grassland is an important habitat for insects, particularly butterflies, and is kept at a plagioclimax by grazing animals, usually sheep and sometimes cattle. Rabbits used to play a part but due to the onset of myxomatosis their numbers decreased so dramatically that they no longer have much of a grazing effect.

There are large areas of calcareous grassland in northwestern Europe, particularly areas of southern England, such as Salisbury Plain and the North and South Downs.

The machair forms a different kind of calcareous grassland, where fertile low-lying plains are formed on ground that is calcium-rich due to shell sand (pulverised sea shells).

Other articles related to "calcareous, grassland, calcareous grassland, grasslands, calcareous grasslands":

List Of UK Sites Recognised For Their Importance In Biodiversity Conservation - Southeast - Kent
... Site Name(s) Type of Site Nature Conservation Interest Designation(s) Burham Down Calcareous woodland and grassland SSSI Burham Marsh SSSI East Blean Woods Heath Fritillary SSSI, SAC, NNR ...
Crook Peak To Shute Shelve Hill - Biological
... semi-natural broadleaved woodland, unimproved calcareous grassland and a complex mosaic of calcareous grassland and acidic dry dwarf-shrub heath ... Four of the calcareous grassland communities, two of the woodland types and the calcareous grassland/acidic dry dwarf-shrub heath mosaic all have a restricted distribution in Britain ...
Geography Of Western Australia - The Biogeography of Western Australia
... on clay flats, and tree to shrub steppe over hummock grasslands on and between red sand dune fields ... on low greenstone hills, valley alluvials and broad plains of calcareous earths ... or Mulga over Triodia basedowii hummock grasslands ...
Boho, County Fermanagh - Flora and Fauna - Flora
... These range from open freshwater lakes to high calcareous grasslands and upland bogs ... Drier habitats include calcareous grassland, which is very rare in a Northern Ireland context covering only 0.1% of the total land area, and which in ... Calcareous grassland is typified by a rich abundance of species (such as Blue Moor-Grass, Wild-Mountain Thyme, Lady's Bedstraw, Fairy Flax and Lady's-Mantle as well as Fescue ...