Fungal colonization of submerged Bruguiera cylindrical and Rhizophora apiculata wood

The colonization of submerged wood of Bruguiera cylindrica and Rhizophora apiculata by fungi was followed over 60 weeks in Mandai mangrove, Singapore. Seawater temperature ranged from 26—32 °C, salinity from 21— 32%o and pH from 5.91—8.35. Thirty-two fungi, not all from the same wood species, representing 24 Ascomycotina, 7 Deuteromycotina and 1 Basidiomycotina were collected. Very frequent fungi (above 20%) were Didymosphaeria enalia, Lulworthia sp. 1, Lignincola laevis and Aigialus parvus on both timbers; Payosphaeria minuta on B. cylindrica and Aigialus mangrovis and Nais inornata on R. apiculata. Frequent fungi (10.0 — 20.0%) were Halosarpheia marina on both timbers; and Nais inornata, Hypoxylon oceanicum, Deuteromycete No. 456 and Halosarpheia lotica on B. cylindrica. The remaining fungi are classed as infrequent (less than 10%).