Distribution and diversity of myxomycetes in Tiantangzhai National Forest Park, China

Abstract

Although myxomycetes are ubiquitous in terrestrial ecosystems, studies on their distribution and diversity in subtropical humid forests are still lacking. Field collections and moist chamber cultures were conducted from May to October within a two-year period in the Tiantangzhai National Forest Park of China. A total of 1,492 records representing 73 species belonging to 26 genera were obtained, of which 243 records/37 species were from field collections, and 1,249 records/52 species were from moist chamber cultures. Among the specimens obtained by culturing, 896 records/38 species and 353 records/37 species were obtained from living bark and ground litter, respectively. ANOVA showed that the sampling months had significant impacts on collection of myxomycetes from field and those that inhabit litter. An LEfSe analysis indicated that Arcyria was significantly abundant in August, while Stemonitis and Physarum were more abundant in July when collected from field. An RDA analysis showed that temperature was the main factor that affected the litter-inhabiting myxomycetes. The ANOVA indicated that forest type was the significant factor for bark-inhabiting myxomycetes. Diderma effusum was primarily obtained from mixed forests, while Clastoderma debaryanum and Colloderma oculatum were more common in coniferous forests. The RDA analysis indicated that the vegetation, pH, water retention, and elevation were the primary factors that affected the bark-inhabiting myxomycetes.

Investigation of species diversity of myxomycetes in Dabie Mountains

“…papillata)等12种在我国并不常见(附录5), 分布目前 已知仅限于个别省份(Liu et al, 2007; 李玉等, 2008a, b;Song et al, 2022; 姚一建等, 2023), 表明大别山可 能具有独特的黏菌物种组成。大别山地跨鄂豫皖三 省, 湖北省此前记载黏菌共148种(邓叔群, 1963; 李 惠中, 1989; 李玉等, 2008a, b; 李敏等, 2021; Li et 李玉等, 2008a, b; 戴群等, 2013; 王高伟等, 2017a, b;Li et al, 2021b), 本研究从安徽大别山区域发现黏菌 68种, 与分布在安徽省其他地点的黏菌共有物种数 为11种, 为安徽省的黏菌增加57种。 3.2 林型和基物对黏菌物种发生的影响 不同类型森林中的黏菌物种组成是国际黏菌 多样性研究的热点(Snell & Keller, 2003; Liu et al, 2015; Novozhilov et al, 2022)。 从大别山的情况来看, 林型影响着黏菌的群落结构。针阔混交林中的物种 数量最多, 针叶林次之, 阔叶林中最少, 多样性趋 势与数量一致。植被覆盖的高低和基物类型的多少 会显著影响黏菌多样性(Schnittler & Stephenson, 2000), 针阔混交林中, 树种和基物类型更加丰富, 伴随着更高的黏菌多样性, 因此, 针阔混交林比单 纯的针叶林和阔叶林中发生的物种多样性更加丰 富。大别山阔叶林中常见的树种是青冈(Quercus glauca) 、 麻 栎 (Q. acutissima) 和 苦 槠 (Castanopsis Henan Agricultural Sciences, 51(2), 75-85. (in Chinese with English abstract) [ 伍 琼 , 陈 曦 , 曹 强 , 陈 砚 涛 , 岳 伟 https://www.biodiversity-science.net/CN/10.17520/biods.2023242…”