Distibution of Calthion palustris Tüxen 1937 in Eninska River Basin, Central Stara Planina Mountain

Abstract

Pachedjieva, K.: Distibution of Calthion palustris Tüxen 1937 in Eninska River Basin, Central StaraPlanina Mountain, Biologica Nyssana, 2 (1), September 2011: 19-28.

During a phytocoenological investigation of Eninska river basin in Central Stara Planina Mountain thewetland vegetation proved to be an element of Calthion alliance. This conclusion is made on the basis ofcluster analysis applied by the computer program SYN-TAX and a detailed review of species composition ofthe analyzed relevés with the respective comparisons. The alliance is presented by the Central European ass.Filipendulo ulmariae-Menthetum longifoliae. The Balcan influence over the association is apparent from theBalcan endemic species Angelica pančičii and Dactylorhiza incarnata. The association is dependent on watersufficiency and unifies Mentha longifolia grasslands on nutrient soils with slightly acidic to slightly basicreaction. It is anthropogenically influenced. Some stands form Mentha longifolia and Urtica dioicacommunity.

Key words: Calthion, Central Stara Planina Mountain, cluster analysis