During ongoing bryological surveys conducted in the Mt. Papuk, two significant sites, Sokolina Gosted and Svinjarevac, have been identified. These sites are characterized by unique acidophilic forests with a predominance of peat mosses on the forest floor. Sokolina Gosted represents the first documented locality in Croatia for four taxa: Andreaea rothii ssp. rothii, Grimmia donniana, G. montana, and Racomitrium affine. Furthermore, Buxbaumia aphylla and Dicranum spurium were observed for the first time at both Sokolina Gosted and Svinjarevac. Additionally, several extremely rare species have been reported at one or both locations, including Cynodontium polycarpon, Dicranum polysetum, Isopaches bicrenatus, Jungermannia pumila, Pleuridium acuminatum, Rhabdoweisia fugax, Syzygiella autumnalis and Ulota intermedia. Consequently, both locations serve as important bryological hotspots, exhibiting distinctive species assemblages within unique habitats relevant to Southeast Europe. While the significance of these sites in terms of bryophyte diversity is clear, the presence of the invasive species Campylopus introflexus underscores the necessity for ongoing research and monitoring efforts in the area.
Šegota et al. (Thu,) studied this question.