Northwest Ireland has several areas of rare machair dunes including those stretching from Mulranny salt marsh to Rosmurrevagh peninsula in Clew Bay, Co.Mayo.
Machairs are fertile, low-lying dune areas - a unique form of coastal grassland (described as 'raised beaches' by Wikipedia). They are formed when sand catches in coastal vegetation, such as marram grass. Consequently, the plants gradually move upward, more sand is caught, and the land's surface is raised.
Although little research has been done into machairs, they are known to support a rich variety of species including many birds and insects (such as the belted beauty moth). Machairs also provide habitat for up to 150 species of flower, some of which are endangered and protected, including the Irish Lady's Tresses.
Machairs are vulnerable to erosion and rising sea levels. In 2007, Mulranny village received the inaugural Notice Nature Biodiversity Award, part of Ireland's Tidy Towns competition. The award recognises over a decade of conservation work to protect and restore local machairs. The Mulranny Causeway loop walk provides access to part of the machairs.
- Wikipedia article on Machairs
- Read about the Belted Beauty Moth
- Irish Lady's Tresses Species Action Plan (36 pages, 239KB, PDF).