Influence of coastal ocean system variations on the ecosisytem on estuary and coast

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360201
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Hydraulic engineering
• Research Institution: Fisheries Research Agency
• Principal Investigator: YAGI HIROSHI 独立行政法人水産総合研究センター, 水産工学研究所, その他 (80201820)
• Co-Investigator(Kenkyū-buntansha): NAKAYAMA Akiyoshi 水産総合研究センター, 水産工学研究所水産土木工学部, 部長 (40372065) ; HAMAGUCHI Masami 水産総合研究センター, 瀬戸内海区水産研究所生産環境部, 主幹研究員 (60371960) ; YADA Takashi 水産総合研究センター, 増養殖研究所内水面研究部, グループ長 (80372043) ; TAKEWAKA Satoshi 筑波大学, 大学院システム情報工学研究科, 教授 (80202167)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 海洋変動 / 加入過程 / 生活史 / チョウセンハマグリ / シラスウナギ / 浮遊幼生 / 数値モデル / 海洋モニタリング

Outline of Final Research Achievements

To understand the influence of coastal ocean variations on the ecosystem of estuarine and inner-self regions, the initial stage of life history for Meretrix lamarckii and Anguilla japonica, especially, their recruitment processes were intensively investigated by field experiments and numerical simulations. Measurement results have shown that nutritional status of the young eels going upstream in the estuary which is one of the important factor for recruitment, varied seasonally. Moreover, numerical simulation results of suspended larva of Meretrix lamarckii have revealed that the active exchanges between Kashima and Kujyukuri coasts, and the suspended larve likely remained in the Kujyukuri coast by the circulation induced by Kuroshio Current approaching to the coast.

Free Research Field

海岸工学