Grazing effects of ayu, Plecoglossus altivelis, on the species composition of benthic algal communities in the Kiso River
スポンサーリンク
概要
- 論文の詳細を見る
The grazing effects of a herbivorous fish, <I>Plecoglossus altivelis</I> (ayu), on the species composition of benthic algal communities were investigated in the Kiso River (Nagano prefecture). Algae were collected from the cobbles and boulders with and without grazing scars of ayu. <I>Achnanthidium convergens</I> predominated in the non-grazed algal communities, whereas <I>Homoeothrix janthina</I> in addition to <I>A. convergens</I> in the grazed algal communities. The biomass of <I>H. janthina</I> was greater in the grazed algal communities than in the non-grazed ones. There was no significant difference in the biomass of <I>A. convergens</I> between two kinds of communities. These results indicate that the grazing by ayu affects the algal species composition by increasing the biomass of <I>H. janthina</I>.
- The Japanese Society of Diatomologyの論文
The Japanese Society of Diatomology | 論文
- Size reduction of Martyana martyi (Hérib. ) Round in Akan-ko (Akan Lake)
- New combinations for some taxa of Navicula and Stauroneis, and an avowed substitute for a taxon of Eunotia
- The use of scanning electron microscopy as a necessary complement of light microscopy diatom examination for ecological studies.
- Diatoms from Lake Ikeda, Kagoshima Prefecture, Japan
- Nomenclatural changes for 20 diatom taxa occurring in Japan