2010 Fiscal Year Final Research Report
Did the close and reclamation of Isahaya inlet cause unusual changes for Ariake Bay?
| Project/Area Number |
20580203
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General fisheries
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| Research Institution | Kochi University |
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Principal Investigator |
KINOSHITA Izumi Kochi University, 教育研究部総合科学系, 教授 (60225000)
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| Co-Investigator(Kenkyū-buntansha) |
UEDA Hiroshi 高知大学, 教育研究部総合科学系, 教授 (00128472)
HAYAMI Yuichi 佐賀大学, 有明海総合研究プロジェクト, 准教授 (00335887)
NAKAYAMA Koji 京都大学, フィールド科学教育研究センター, 助教 (50324661)
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| Research Collaborator |
FUJITA Shinji 西日本科学技術研究所
NIGI Goro 西日本科学技術研究所
KAWAMURA Yoshio 佐賀県有明水産振興センター
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| Project Period (FY) |
2008 – 2010
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| Keywords | 有明海 / 諫早湾 / 締切・干拓 / 環境異変 / 魚類再生産 |
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| Research Abstract |
To examine the importance of the upper estuarine areas of Ariake Bay as a nursery ground for fish, assemblages of larvae and juveniles were compared among various aquatic habitats. The upper estuaries of the bay (the Rokkaku and Hayatsue estuaries) are brackish, highly turbid waters with high tidal velocities, and differ substantially from the Isahaya area, which has been separated from the bay by a man-made dike, to the middle estuary (the Kikuchi estuary). Abundances of larvae and juveniles were higher in the estuaries than in the open bay and Isahaya areas. Abundant species in the upper estuaries were similar to each other, but differed from those of the middle estuary. This was primarily due to larvae and juveniles of fishes that occurred almost entirely in the upper estuaries. These results suggest that the upper estuaries play an important role as nursery grounds for fishes.
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