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Distribution and occurrence of manglicolous marine fungi from eastern and southern Thailand

Abstract The species diversity of marine fungi was investigated in eastern and southern Thailand. Senescent and decaying woody substrata were collected from intertidal mangrove forests located in Trat, Prachuap Khiri Khan and Phetchaburi Provinces. A total of 99 fungal species was recorded. These included 84 Ascomycota (85%), two Basidiomycota (2%) and 13 asexual fungi (13%). The average percentage occurrence of the fungi recorded from each site ranged from 0.1% to 13.7%. Based on the percentage of samples in which a particular taxon was found, the most frequent fungi were Quintaria lignatilis (8%), Rimora mangrovei (8%) and Salsuginea ramicola (7%). The results showed that 25 species were common to all three provinces. The Shannon-Wiener diversity index, equitability species evenness index and Margalef’s species richness index were the highest in Trat Province, followed by Prachuap Khiri Khan and Phetchaburi Provinces. Moreover, eight fungal species were new records for Thailand: Aniptodera salsuginosa, Etheirophora bijubata, Etheirophora blepharospora, Neptunella longirostris, Oceanitis cincinnatula, Savoryella melanospora, Sedecimiella taiwanensis and Trichocladium lignicola, and there are three new species. The results from this study provide an insight into the diversity of marine fungi present in Thai mangroves bringing the current total number to 184 species.