| Abstract [eng] |
Comparative study of abundance and species diversity of snails of family Clausiliidae in 2004 and 2006 was made in 6 habitats in Vilnius and environs of Ukmergė (Tilio-Carpinetum Tracz.62, Urtico dioicae-Alnetum incanae Korotkov 86, Saliceta purpurea Moor 1958, Alnetum incanae Aich. et Siegr. 30, Carici remotae-Fraxinetum Oberd. 53, Acer platanoides-Carpinetum Scamoni 63). Comparative analysis confirmed that the situation of Clausilia pumilla, Macrogastra latestriata, Bulgarica cana, Balea biplicata, Ruthenica filograna is critical and there is a high risk of disappearing for those species, therefore additional safeguards should be undertaken. Seasonal variation of profusion revealed, that the most viable are the populations of Lacinaria plicata, Cochlodina laminata, Clausilia dubia, Macrogastra ventricosa in the examined locations, whereas Lacinaria plicata and Cochlodina laminata are the few species which inhere the best resistance to anthropogenic influence therefore can be qualified as eudominant in such habitats. |
