Investigation of benthic environment for recovery of ecological function in Lake Taihu.

2014 Fiscal Year Final Research Report

• Project/Area Number: 24404008
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Environmental technology/Environmental materials
• Research Institution: Tohoku University
• Principal Investigator: NISHIMURA Osamu 東北大学, 工学(系)研究科(研究院), 教授 (80208214)
• Co-Investigator(Kenkyū-buntansha): NOMURA Munehiro 東北大学, 大学院工学研究科, 助教 (70359537) ; FUJIBAYASHI Megumu 東北大学, 大学院工学研究科, 助教 (70552397)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 底質 / 藍藻 / 高等植物 / 有機物起源 / 脂肪酸 / 安定同位体比

Outline of Final Research Achievements

The origin of sedimentary organic carbon and assimilated food source of dominant benthic animals were investigated with fatty acid biomarker and stable carbon isotope in hyper-eutrophic shallow lake, Lake Taihu in China. While suspended matter in Lake Taihu contained much more cyanobacteria derived fatty acid biomarker than higher plants, higher-plant-derived fatty acid biomarker was dominant in sediments from whole of the lake in summer and winter. Fatty acid analysis revealed that dominant benthic animals mainly assimilated cyanobacteria not higher plants.The consumption of cyanobacteria by benthic animals may one of the possible explanation for accumulation of higher-plant-derived organic carbon in sediments from Taihu.

Free Research Field

環境生態工学