Investigations into the restoration of submerged aquatic plants using soil seed bank for the water quality improvement in Lake Hachiro-ko, Akita

在秋田立大学和秋田八郎湖东帘沟的农田中，利用从八郎湖流域采集的37个土壤种子库进行了沉水植物的实验恢复。分别从土壤种子库中萌发了秋田立大学田间的11种沉水植物和八郎湖东帘沟的4种沉水植物。卷叶塘和西米塘对高浓度蓝藻水华具有较强的耐受性。我们阐明了这两个物种的水生植物在八郎湖地区的海岸恢复的潜力。

Experimental restoration of submerged aquatic plants by using 37 soil seed banks collected from Hachiro-ko basin were performed at fields of Akita prefectural Univ. and Eastern curtain drain of Hachiro-ko, Akita. Submerged aquatic plants of 11 species in fields of Akita prefectural Univ. and 4 species in Eastern curtain drain of Hachiro-ko were germinated from soil seed banks respectively. The curly-leaf pondweed as Potamogeton crispus and sago pondweed as Potamogeton pectinatus were tolerant to hyper concentrated cyanobacterial bloom. We clarify the potential of these two species for restoration of aquatic plants in lake shore of Hachiro-ko area.