Diversity and ecology of aphyllophoroid fungi on driftwood logs on the shores of the Baltic Sea

Driftwood is woody debris that is floating on the sea or brought onto the shore by the sea. It can have a natural origin but often it originates from human activities. Driftwood has a significant ecological role as a microhabitat for a large range of species. Dead-wood-associated aphyllophoroid fungi on driftwood have been studied rather little globally, and there are hardly any studies conducted in the Baltic Sea. We studied the diversity and ecology of polypores and corticioids growing on driftwood (man-made logs) on the shores of Finnish SW-archipelago. In total, 394 driftwood logs were surveyed for visible fungal sporocarps. We found altogether 145 species (1023 records) of which approximately three-fourths were corticioids. The driftwood logs hosted several rare and noteworthy species, such as one new corticioid species, 16 nationally rare species, and 40 new species to the region. The five most common species accounted for one-third of all observations, whereas 82 species (11 % of...浮木（Driftwood）是漂浮于海面或经海浪冲刷至海岸的木质碎屑。其既可源自自然过程，也常由人类活动产生。浮木作为诸多物种的微生境，发挥着重要的生态功能。全球范围内针对浮木上附生的非褶菌类真菌（aphyllophoroid fungi）的研究尚且匮乏，波罗的海区域更是几乎未开展过相关研究。本研究针对芬兰西南群岛沿岸浮木（人工原木）上生长的多孔菌（Polypores）与革菌类真菌（Corticioids）的多样性及生态特征展开调查。本次研究共调查了394根浮木原木，记录其上可见的真菌子实体（sporocarps）。共计记录到145个物种（合计1023条观测记录），其中约四分之三为革菌类真菌。本次调查的浮木原木上还发现了多种珍稀及值得关注的物种，包括1个革菌类新种、16个国家级珍稀物种，以及40个该区域新记录物种。五种最常见的物种占总观测记录的三分之一，而82个物种（占总数的11%……）