Re-evaluation of natural mortality of zooplankton; importance of non-consumptive mortality

2015 Fiscal Year Final Research Report

• Project/Area Number: 24310007
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: The University of Tokyo
• Principal Investigator: TAKAHASHI Kazutaka 東京大学, 農学生命科学研究科, 准教授 (00301581)
• Co-Investigator(Kenkyū-buntansha): OKAZAKI Yuji 国立研究開発法人・水産研究・教育機構東北区水産研究所, 資源環境部, 主任研究員 (90392901)
• Co-Investigator(Renkei-kenkyūsha): HAMASAKI Koji 東京大学, 大気海洋研究所, 准教授 (80277871) ; HIDAKA Kiyotaka 国立研究開発法人・水産研究・教育機構, 中央水産研究所, 主任研究員 (70371838)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 生物生産 / 海洋生態 / プランクトン / 環境変動 / 地球化学

Outline of Final Research Achievements

Production of zooplankton is an essential link to determine the fisheries production and efficiency of biological pump. Therefore, a lot of effort has been invested to investigate the growth and reproduction of zooplankton in the field. On the other hand the mortality, which directly contribute to the fisheries productivity and material cycle is still remained mostly unknown. In particular role of non-consumptive mortality (mortality other than predation) in the marine ecosystem needs to be evaluated due to its significance to connect between grazing food web and microbial loop. This project aims to evaluate the significance of the non-consumptive mortality in the marine ecosystems, focusing on the pelagic tunicates, doliolid in the Oyashi-Kuroshio Mixed water region and pelagic copepod in the coastal area.

Free Research Field

生物海洋学