Research on the impact of water discharge from Shichikawa Dam in Kozagawa River system onto the benthic community in Kushimoto Bay

古座川水系七川水库泄水对串本湾底栖生物群落的影响研究

• 批准号: 19310022
• 负责人: SHIRAYAMA Yoshihisa
• 金额: $ 10.4万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19310022/
• 关键词: 環境影響; ダムの放流; 底生生物群集; 森里海連環; 串本湾; ダム; 放水; マクロベントス; メイオベントス; 海底堆積物; 古座川; 森里海連環学; 七川ダムの放水; 環形動物

The impact of water discharge from Shichikawa Dam build in Kozagawa water system of Wakayama Prefecture onto the benthic community in the river mouth region of Kushimoto Bay was analyzed. The relationships among water discharge and increase of turbidity in river water and sea water in the river mouth area were not always clear. The characteristics of benthic community and benthic environment indicated some influence by river but not directly related to the water discharge from dam. The trial to use molecular techniques for rapid identification of polychaetes was successful when mitochondrial CO1 region was used as a marker.

分析了和歌山县小泽川水系七川大坝建设后的放水对串本湾河口区底栖动物群落的影响。河口区河水和海水浊度的增加与流量之间的关系并不总是很清楚。底栖动物群落和底栖环境特征表明，底栖动物群落和底栖环境受河流影响，但与大坝放水量无直接关系。以线粒体CO_1区为标记，利用分子生物学技术快速鉴定多毛类的尝试是成功的。