20.500.12556/DiRROS-29307 Uncovering two freshwater brown algae Bodanella lauterborni and Heribaudiella fluviatilis in Serbia (Southeast Europe) Bodanella lauterborni W.M. Zimmermann and Heribaudiella fluviatilis (Areschoug) Svedelius are members of brown algae (Phaeophyceae) that exclusively inhabit freshwater habitats. Heribaudiella fluviatilis is the most frequently reported freshwater brown alga, widely distributed in the Northern Hemisphere. In contrast, B. lauterborni, one of the rarest algae globally, has been reported in only four glacial Alpine lakes and has not been observed in nature for nearly 50 years. Since 2019, the species has been considered locally extinct at its type locality, and its presence in the other three lakes is also questionable. Here, we report the occurrence of B. lauterborni in three springs on the Vlasina Plateau (Southeast Serbia), being the first finding of the species in Southeast Europe and the fifth discovery globally in environmental conditions not previously described for the species. We also provide detailed data on the morphology, ecology, and biogeography of B. lauterborni and H. fluviatilis. Additionally, we report the non-obligate association Hildenbrandio rivularis-Heribaudielletum fluviatilis discovered in two rivers. Our findings significantly expand the known ecological and geographical range of phaeophytes, highlighting Southeast Europe as a refugium for freshwater Phaeophyceae biodiversity. Phaeophyceae spring river lake crystalline shales distribution ecology morphology Hildenbrandio rivularis-Heribaudielletum fluviatilis Phaeophyceae razširjenost ekologija morfologija Hildenbrandio rivularis-Heribaudielletum fluviatilis true false true Angleški jezik Slovenski jezik Neznano 2026-05-06 14:49:34 2026-05-06 14:49:34 2026-05-07 03:51:15 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Opis vira z dne 22. 4. 2026; Soavtorji: Tijana Veličković, Kristina Markeljić, Nevena Đorđević, Snežana Simić; str. 1-20 iss. 2, [article no.] 41 Vol. 6 Apr. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-04-12 574.5 2673-9410 10.3390/phycology6020041 276144899 https://www.mdpi.com/2673-9410/6/2/41 1 09b12bc3-494a-11f1-8a5a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43862 RAZ_Rakonjac_Aleksandra_B._2026.pdf RAZ_Rakonjac_Aleksandra_B._2026.pdf 1 770EBC268F8ED6D7E74BA1411826AF85 9657150f0abf88b9172e8978098d7a3a54739174292c1bc7e973d0627c0e7004 320ca217-494a-11f1-8a5a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43864 Nacionalni inštitut za biologijo 0 0 0