2019 Volume 45 Issue 1 Pages 51-56
Lake Biwa Canal is an urban water system representing the Okazaki area which was selected as the "Important cultural landscape" in 2015. We surveyed, flowing of drifting aquatic plants into the Okazaki area and the green coverage of submerged plants at Lake Biwa Canal as important ecosystem. We found 11 species drifting and 8 species growing from 85 plots in this canal. We used nMDS analysis based on green coverage and sediment of bottom surface. Egeria densa was found in "Sosui bunsen" with mud. Potamogeton malaianus was found in "Sosui Shirakawa" with middle gravel. Vallisneria asiatica var. biwaensis appeared in both waterway with fine gravel.
