Water Quality and Vegetation of Naka-ikemi Marsh, Tsuruga, Fukui, Japan-Importance of Water Quality on the Conservation of Marsh Vegetation

Abstract

This work is based on the water quality, attached diatom assemblages and water plant community of Naka-ikemi marsh, Tsuruga, Fukui, Japan. Samples were collected from about 50 stations in this marsh from 6 February to 5 September 1997. Using factor analysis, the first axis made by calcium-magnesium hardness and pH was found. This axis was strongly related to the attached diatom assemblages and water plant community. The second axis was characterized by oxidation and reduction. This axis was related to water plants, but not to diatom assemblages. These results clarify the importance of the water quality on the conservation of marsh vegetation.