Macrofungal flora on the volcano Usu, [Hokkaido, Japan] deforested by 2000 eruptions
2005
Obase, K.(Hokkaido Univ., Sapporo (Japan)) | Tamai, Y. | Miyamoto, T. | Yajima, T.
An area on the volcano Usu was deforested by an eruption in 2000. Sporocarp occurrence of macrofungi in this devastated area and the surrounding area on its circumference was investigated. A total of 48 taxa of macrofungi were recorded. Sporocarps of Lyophyllum decastes, Lyophyllum sp., Omphalina sp., Psathyrella velutina, Pholiota sp. and two Pezizaceae were found only in the devastated area. Coprinus comatus and Coprinus atramentarius were present in both areas. In the area around the circumference, mainly the sporocarps of Clitocybe, Armillaria, Collybia, Lepiota, Hypholoma, Inocybe, Hebeloma and Scleroderma were observed. The species composition in the devastated area was largely different from that of the area around the circumference. Difference of several factors such as presence of litter layer, composition and maturity of woody plant species and moisture content of ground between both areas may effect the occurrence of sporocarps.
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