Abstract
The paper reports faunistic data on the land snail fauna of the protected beech forest reserve of Fagetul Secular Humosu (Suceava County, Romania). We found several species with Carpathian distribution, and the study area is probably the easternmost locality of these species. The Humosu Forest Reserve is the fourth locality of Serrulina serrulata (L. Pfeiffer, 1847) in Romania. The species survival requires occurrence of preserved old-growth forests with decaying tree trunks and logs.
Highlights
The Humosu Old Growth Beech Forest is located on the Suceava Plateau, near the eastern limit of beech (Fagus sylvatica) distribution in Europe (Roibu 2010)
The Humosu Reserve is located in the Hârlǎu Forest District, Production Unit III Humosu, parcel 62 and 64, at an altitude of around 455 m, with the coordinates 47°30'02" North, and 26°43'27" East
Twenty species were collected in the Humosu Reserve and four additional species were found in the flood debris of a small stream nearby
Summary
The Humosu Old Growth Beech Forest is located on the Suceava Plateau, near the eastern limit of beech (Fagus sylvatica) distribution in Europe (Roibu 2010). This reserve was established in 1970 and has a 70 ha total area. The main type of soil is luvosol, and the specific flora is formed by species of the genus Asperula. From structural and specific phytocoenosis analyses, according to adopted typology, we can see that the flora corresponds to the Geranio robertianae-Fagetum association. Until now most of the research conducted in this reserve has been focused on the structural dynamics of natural ecosystems (Roibu & Popa 2007, Roibu et al 2008, Roibu 2010; Barbir et al 2010) and the dendroclimatological responses of beech at its eastern limit of European distribution (Roibu 2010)
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