y Diversity of wood-inhabiting Agaricomycotina on wood of different size classes in riparian forests of Uruguay
y Diversity of wood-inhabiting Agaricomycotina on wood of different size classes in riparian forests of Uruguay
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DOI：
10.1016/j.myc.2019.02.001
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发表时间：
2019-05-01
期刊：
影响因子：
1.4
通讯作者：
Bettucci, Lina
中科院分区：
文献类型：
--
作者：
Martinez, Sebastian;Nakasone, Karen K.;Bettucci, Lina
许多蘑菇菌属是腐生菌，通过分解木材在森林生态系统的养分循环中发挥着重要作用。关于影响乌拉圭新热带暖温带原生森林中木生真菌多样性的因素，人们知之甚少。这些原生森林大多位于河岸，栖息着约300种树种。在这项研究中，我们评估了乌拉圭河岸森林中不同大小类别木材上寄生真菌的多样性。共回收蘑菇菌类186种，其中皮质类113种，多孔类58种。11个分类群占总样本数的38%。在细木质碎屑(FWD，直径2-10厘米)上发现的物种数最多，而在粗木质碎屑(CWD，10厘米直径)和极细木质碎屑(VFWD，2厘米直径)上发现的物种数最多。对于所研究的任何一个组或木材直径类别，物种积累曲线都没有达到渐近线。在CWD(61%的收集)和VFWD(77%)上记录的多孔性更多。由非参数估计器估计的物种丰富度表明，蘑菇菌纲的物种丰富度在450到700个分类群之间。我们的结果表明，乌拉圭河岸森林，尽管其面积有限和破碎化，但支持木材栖息的蘑菇菌多样性，可与较少破碎化的森林相媲美，具有更多的植物多样性。(C)2019年日本真菌学会。爱思唯尔出版，版权所有。
Many Agaricomycotina species are saprobes, playing a fundamental role in nutrient cycling in forest ecosystems by decomposing wood. Little is known about factors affecting diversity of wood-inhabiting fungi in the neotropical, warm temperate native forests of Uruguay. Most of these native forests are riparian harboring about 300 tree species. In this study, we assessed the diversity of wood-inhabiting fungi on wood of different size classes in riparian forests of Uruguay. We recovered 186 species of Agaricomycotina, including 113 corticioid and 58 polyporoid taxa. Eleven taxa accounted for 38% of the all the samples. The highest number of species was found on fine woody debris (FWD, 2-10 cm diam) than coarse woody debris (CWD, > 10 cm diam) and very fine woody debris (VFWD, < 2 cm diam). Species-accumulation curves did not reach an asymptote for any of the groups or wood diameter classes studied. Polyporoids were more frequently recorded on CWD (61% of collections) and corticioids on VFWD (77%). Species richness estimated by non-parametric estimators indicates an Agaricomycotina species richness between 450 and 700 taxa. Our results show that Uruguayan riparian forests, despite its limited area and fragmentation, support a wood-inhabiting Agaricomycotina diversity comparable to less fragmented forests with more plant diversity. (C) 2019 The Mycological Society of Japan. Published by Elsevier B.V. All rights reserved.