Bogate stanowisko mieczyka dachowkowatego Gladiolus imbricatus L. na terenie Nadbuzanskiego Parku Krajobrazowego [Nizina Poludniowopodlaska]

W artykule przedstawiono charakterystykę nowego stanowiska Gladiolus imbricatus na terenie rezerwatu florystycznego Biele (Nadbużański Park Krajobrazowy). Stanowisko położone w prześwietlonym lesie łęgowym (Fraxino-Alnetum) liczy 112 okazów generatywnych i należy do najbogatszych w regionie. Zaproponowano aktywną ochronę gatunku polegającą na ograniczaniu rozwoju warstwy krzewów

Gladiolus imbricatus is a strictly protected species in Poland. It is considered to be critically endangered in the Nizina Południowopodlaska Lowland. The main reason of extinction of the species in the region is decrease in water table, athropopressure (frequent mowing, application of a large doses of fertilizers) and on the other hand a secondary succession due to cessation of meadow exploitation. The station of G. imbricatus in the same forest complex, recorded in the early 70’s of XX century, was not confirmed at present. In July 2007 a new site of G. imbricatus was found in a forest clearing in Biele nature reserve (the Nadbużański Landscape Park). The site is situated about 1 km south-east from Noski village, in the eastern part of the reserve (ATPOL square FC74). The stand consists of 112 flowering specimens. The plant community accompanying the species is dominated by meadow species of Molinion alliance (e.g. Lysimachia vulgaris, Filipendula ulmaria, Ranunculus repens, Galium uliginosum, Stachys palustris, Lychnis flos-cuculi, Myosotis palustris), forest plants of Fagetalia sylvaticae order (e.g. Stachys sylvatica, Stellaria nemorum, Impatiens noli-tangere, Festuca gigantea, Scrophularia nodosa, Dryopteris filix-mas, Milium effusum) and species from Glechometalia hederaceae order (e.g. Glechoma hederacea, Galium aparine, Anthriscus sylvestris, Geranium robertianum, Urtica dioica, Geum urbanum). Active protection of G. imbricatus by reduction of shrub development is suggested