7210
Calcareous fens with Cladium mariscus and species of the Caricion davallianae
Syntaxonomy. Magnocaricion elatae Koch 1926: Cladietum marisci Zobrist 1935.
Species:
Carex davalliana **,
C. elata ,
Cladium mariscus **,
Dactylorhiza incarnata **,
Eleocharis palustris ,
Epipactis palustris **,
Eriophorum latifolium ,
Eupatorium cannabinum ,
Galium palustre ,
Juncus articulatus ,
Mentha aquatica ,
Molinia caerulea ,
Phragmites australis ,
Pinguicula vulgaris **,
Potentilla erecta ,
Schoenoplectus tabernaemontani ,
Schoenus ferrugineus **,
Swertia perennis **,
Triglochin palustre Photo: Л. Глазунова,
Typha angustifolia ,
Valeriana simplicifolia Photo: В. Куропаткин;
mosses:
Drepanocladus sendtneri ,
Campylium stellatum ,
Aulacomnium palustre Photo: Wikipedia.
Structure. This habitat type is represented in floodplaines of river valleys. Habitats occupy a small area with predominance of
Cladium mariscus and tall sedges or grasses.
Cladium mariscus forms the first layer of high and dense sward, including
Phragmites australis ,
Cirsium rivulare Photo: А.Токарюк,
Cirsium palustre . In less flooded areas
Schoenus ferrugineus is subdominant, forming the second layer. Floral composition of the community is characterized by a number of rare species, in particular
Carex davalliana ,
Pinguicula vulgaris ,
Swertia perennis ,
Epipactis palustris , etc.
Molinia caerulea ,
Potentilla erecta ,
Galium palustre frequently occur.
Ecological characteristic. It forms on calcareous bogs in floodplains of small rivers and relict valleys. A peat layer is thin (1-2 m), marsh turf with pH 6-7. Sometimes these communities are developed on anthropogenically transformed areas, particularly on the denuded substrate due to peat extraction, construction of dikes or roads.
Threats. It is mostly affected by changes of the hydrological regime (drainage) and eutrophication. It may also vanish as a result of natural succession processes due to overgrowing and the formation of the tree layer.
Management. Maintenance of the appropriate ground water level, cutting of the grass every few years, cutting (felling, uprooting) of trees.
References. Борсукевич, 2008; Стойко та ін., 1998, Кузярін, 2001, Зелена книга України, 2009, Червона книга України, 2009, Оселищна концепція…, 2012, Chytrý, Kučera, Koči, 2001, Stanová, Valachovič, 2002.
Authors: I. Danylyk, О. Kuziarin, S. Izmestieva.