engleski

Distribution of Buxbaumia viridis (Moug. ex Lam.. & DC.) Brid. ex Moug. & Nestl. in Croatia

Buxbaumia viridis (Moug. ex Lam.. & DC.) Brid. ex Moug. & Nestl. is a boreal montane species, which lives on large, well-decaying wood in constantly humid forests. Being an indicator species of old- growth (primeval) forests – a rare forest habitat in European context - it is a Red listed species, included in the Bern Convention and Habitat Directives. The populations of Buxbaumia viridis in the region of Balkan Peninsula and Pannonian Plane (e.g. Serbia, Montenegro and Hungary) have been already studied and monitored. However, the data on distribution of B. viridis in Croatia are very old, the “newest” dating from 1938. The field research started in 2011 resulted in preliminary distribution map of the species in Croatia. In total 12 localities along the Croatian Dinarides (Gorski Kotar, Mt Velika Kapela and Mt Velebit) inside fir, spruce and beech dominated forests (ass. Omphalodo-Fagetum, Blechno-Abietetum and Laserpitio krapfii-Piceetum) were recorded. The populations were found numerous (somewhere with hundreds of specimen), developing exclusively on fir and spruce decaying logs or stumps. The largest populations were noticed on fallen decaying trees in non-managed forest stands where natural processes of forest regeneration are ensured. However, the development of B. viridis on rotten tree stumps in managed forests stands has been observed, as well. Since mixed beech, fir and spruce forests are not rare along the Dinaric mountain range, the specific ecological, climatic and anthropogenic factors are to be studied in order to explain the distribution patterns of the species in Croatia.

Croatian Dinarides; fir; spruce and beech forests; decaying trees; non-managed forests

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