Diversity analysis of soil dematiaceous hyphomycetes from the Yellow River source area: I.
Twenty-four soil samples of eight ecosystem-types around the Yellow River source area were investigated for the number and specific composition of soil dematiaceous hyphomycetes by dilution plate technique. And then the co-relationship between genus species of soil dematiaceous hyphomycetes and ecosystem-types was analyzed. The results show that the amount and species distribution of soil dematiaceous hyphomycetes had an obvious variability in different ecosystem-types, and that the dominant genus species varied in the eight ecosystem-types studied, with Cladosporium being the dominant genus in seven of the eight ecosystem-types except wetland. The index of species diversity varied in different ecosystem-types. The niche breadth analysis showed that Cladosporium had the highest niche breadth and distributed in all ecosystem-types, while the genera with a narrow niche breadth distributed only in a few ecosystem-types. The results of niche overlap index analysis indicated that Stachybotrys and Torula, Doratomyces and Scolecobasidium, Cladosporium and Chrysosporium had a higher niche overlap, whereas Arthrinium and Gliomastix, Phialophora and Doratomyces, Oidiodendron and Ulocladium had no niche overlap.
Mycological Laboratory, Department of Plant Pathology, Shandong Agricultural University, Tai'an 271018, China.
Hao-Qin
HQ
Pan
Jin-Feng
JF
Yu
Yue-Ming
YM
Wu
Tian-Yu
TY
Zhang
Hong-Feng
HF
Wang
D002681:China; D017753:Ecosystem; D005618:Fresh Water / Q000382:microbiology; D003904:Mitosporic Fungi / Q000145:classification* / Q000302:isolation & purification*; D012988:Soil Microbiology; D013045:Species Specificity