Differences between bacterial community in epilithon and epipelon at Nishiaokidaira in the Akigawa River.:Differences between bacterial community in epilithon and epipelon at Nishiaokidaira in the Akigawa River
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Bacterial communities in the epilithon and epipelon of the riverbed were studied at Nishiaokidaira in the Akigawa River in Tokyo, Japan. The biomass of the epipelon calculated by dry weight and ignition loss was larger than that in the epilithon. Chlorophyll contents and algal activity as shown by Chlorophyll a/Chlorophyll a+Pheophytin a (C/C+P), however, were higher in the epilithon bacterial community than in the epipelon. The physiological properties of the isolated bacterial strains showed that there were many fermentative facultative anaerobic bacteria in the epipelon community. On the other hand, many yellowish colonies were observed in the epilithon bacterial community and identified as Flavobacterium spp. and Cytophaga spp. Thus, it was clarified that the bacterial communities were different between the epilithon and epipelon. It was concluded that, based on the estimation of its self-pulifying ability, we must consider the overall structure of the riverbed.
- 日本陸水学会の論文
日本陸水学会 | 論文
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