Diatoms of Fujiganaru Moor, a valley moor situated in the warm-temperate zone in Western Japan

抄録

We investigated the diatom flora of Fujiganaru Moor, an intermediate moor in Okayama Prefecture, Western Japan. It is a Sphagnum moor formed at the bottom of a valley at 220–240 m above sea level and is surrounded by a slightly sloped ridge. A field survey and sampling were taken place on 14 March 2016. The water was slightly acidic (pH 5.8–6.5) with low electrical conductivity (2.4–3.2 mS m⁻¹). From 15 samples, 111 diatom taxa belonging to 32 genera were found, although 16 of them have not been identified at the species level. They are all listed and illustrated here. In terms of taxa richness, the dominant genus was Pinnularia, represented by 24 taxa, followed by Eunotia, with 17 taxa.