Nascimbene Juri, Nimis Pier Luigi, Klüßendorf Johanna, Thüs Holger
Biome-Lab, Department of Biological, Geological and Environmental Sciences, Alma Mater Studiorum, University of Bologna, Via Irnerio 42, I-40126 Bologna, Italy.
Department of Life Sciences, University of Trieste, Via Giorgieri 10, I-34127 Trieste, Italy.
J Fungi (Basel). 2023 Mar 21;9(3):380. doi: 10.3390/jof9030380.
This work summarizes the results of the exploration of freshwater lichen biota on the island of Sardinia associated with the regional flagship species , a large-sized crustose lichen from the splash zone along mountain streams, so far known from Sardinia only. Molecular data were used to confirm its distinctiveness from other taxa and its systematic placement and to identify critical taxa among its associated lichen biota. We found 25 species of lichenized fungi, including three species new to science in the genera , and , and seven species new to Sardinia (, , , , , ), or new to Southern Europe (). Specific traits for the freshwater lichen biota of Sardinia were identified and compared to those reported from freshwater sites in the Alps and Carpathian mountains, e.g., a relative scarcity of subgelatinous lichens. Parasitic or epilichenic interactions were found frequently but only in the splash zone and not in the permanently submerged zone, i.e., two parasitic species, and clearly lichenicolous thalli of and . Due to its specific trait profile and the great potential for the discovery of new species, we recommend the inclusion of Sardinian and further Mediterranean sites in continental-scale monitoring programs for freshwater lichens.
这项工作总结了撒丁岛淡水地衣生物群的探索结果，该生物群与区域旗舰物种相关，这是一种来自山间溪流飞溅区的大型壳状地衣，迄今为止仅在撒丁岛被发现。分子数据被用于确认其与其他分类群的独特性及其系统位置，并识别其相关地衣生物群中的关键分类群。我们发现了25种地衣化真菌物种，包括三个属中的新科学物种，以及七个撒丁岛新物种（，，，，，），或南欧新物种（）。确定了撒丁岛淡水地衣生物群的特定特征，并与阿尔卑斯山和喀尔巴阡山脉淡水地点报告的特征进行了比较，例如亚凝胶质地衣相对稀少。寄生或地衣上的相互作用频繁出现，但仅在飞溅区发现，而在永久淹没区未发现，即两种寄生物种，以及和明显的地衣寄生菌体。由于其特定的特征概况以及发现新物种的巨大潜力，我们建议将撒丁岛和更多地中海地点纳入大陆规模的淡水地衣监测计划。
