| Project/Area Number |
12660158
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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 | Hokkaido University |
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Principal Investigator |
SAKAOKA Keiichiro Hokkaido Univ., Fac.of Fish., Lec., 水産学部, 助手 (40241377)
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| Co-Investigator(Kenkyū-buntansha) |
YONETA Kunisaburo Hokkaido Univ., Grad.School of Fish., Asso.Prof., 大学院・水産科学研究科, 助教授 (50001631)
SHIGA Naonobu Hokkaido Univ., Grad.School of Fish., Asso.Prof., 大学院・水産科学研究科, 助教授 (30091466)
MEGURO Toshimi Hokkaido Univ., Fac.of Fish., Prof., 水産学部, 教授 (60002341)
BOWER John Hokkaido Univ., Field Science Center for Northern Biosphere, 北方生物圏フィールド科学センター, 助手 (10312406)
YAMAMOTO Jun Hokkaido Univ., Field Science Center for Northern Biosphere, 北方生物圏フィールド科学センター, 助手 (10292004)
梶原 善之 北海道大学, 水産学部, 助教授 (20161044)
小林 直人 北海道大学, 水産学部, 助手 (00250506)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2001: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | plankton net / NORPAC NET / sampling property / データーロガー / 海洋観測 / プランクトン採集 / 練習船 / 調査船 / 船体動揺 |
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| Research Abstract |
Plankton nets have been used for as a method for collecting the plankton. Especially, the NORPAC-NET is widely used in order to keep the compatibility of the data and there are many long-term data based on the NORPAC samples. NORPAC-NET sampling is easy to operate, the wire angles often exceed 40 degrees when sea condition is rough. These would suggest that these samples were estimated over or less than the normal condition. Then, this study investigates the collection characteristic of the NORPAC net and the property of the long-term data set. Furthermore, the present study examines other plankton net, MTD-Net, Bongo-Net and the retention on the survey-net mesh.
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