Analysis of trophic flow and evaluation of relative contribution of each ecosystem for integrated coastal zone management

2015 Fiscal Year Final Research Report

• Project/Area Number: 24380107
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: General fisheries
• Research Institution: Hiroshima University
• Principal Investigator: Shoji Jun 広島大学, 生物圏科学研究科, 准教授 (10397565)
• Co-Investigator(Kenkyū-buntansha): TAKASUKA AKINORI 国立研究開発法人水産研究, 教育機構・中央水産研究所・資源管理研究センター, グループ長 (00392902) ; MITAMURA HIROMICHI 京都大学, 情報学研究科, 准教授 (20534423)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 沿岸 / 生態系 / 食物網 / 時空間変動

Outline of Final Research Achievements

Fish sampling and stomach contents analysis were conducted in order to examine predator-prey interactions of the major components of animal communities in coastal ecosystems in Japan. In the Seto Inland Sea and Hokkaido areas, which were selected as main sites for intensive survey, predatory fish biomass increased in nighttime in all seasons. The increase in predation risk of juvenile and small-sized fish during nighttime was commonly observed at almost all sampling sites and seasons. The structures of wood-web in coastal ecosystem were suggested to change within small spatial and temporal scales than expected.

Free Research Field

海洋生態学，水産資源学