Elucidation of biological production processes of lower trophic level in the complex ecosystem of subtropical seagrass bed and mudflat
| Project/Area Number |
25292115
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aquatic bioproduction science
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| Research Institution | Japan Fisheries Research and Education Agency |
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Principal Investigator |
YAMADA Hideaki 国立研究開発法人水産総合研究センター, 東北区水産研究所, 業務推進課長 (10372012)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAMURA Tomohiko 東京大学, 大気海洋研究所, 教授 (30323629)
HAYAKAWA Jun 東京大学, 大気海洋研究所, 助教 (10706427)
NAKAMURA Yohei 高知大学, 教育研究部総合科学系黒潮圏科学部門, 准教授 (60530483)
KON Koetsu 筑波大学, 生命環境科学研究科, 助教 (40626868)
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| Co-Investigator(Renkei-kenkyūsha) |
FUKUOKA Kouki 国立研究開発法人水産研究・教育機構, 西海区水産研究所, 主任研究員 (30416044)
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| Research Collaborator |
SHIMABUKURO Hiromori
NAKAMOTO Kenta
OHTSUCHI Naoya
SUZUKI Hatsumi
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2013: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 食物網構造 / 炭素・窒素安定同位体比 / 藻場・干潟 / 複合生態系 / 低次生産 / マイクロハビタット / 植食動物 / 亜熱帯藻場 / 干潟 / 安定同位体 |
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| Outline of Final Research Achievements |
The diversity of vegetation, the habitat utilization by epiphytic and benthic animals and the food web of those in seagrass meadows and mangrove areas were investigated in shallow waters around Nagura Bay, Ishigaki island, Okinawa. Although mangrove-mudflat system was uniformity trophic structure, seagrass-mudflat system represented different structures among microhabitats. These two ecosystems did not show robust connectivity as regarding food web of lower trophic level. However, their linkage can contribute to enhance nutrient buffering function in coastal areas. In addition, herbivorous gastropod species and rabbit fish were thought to be vital components in ecosystem resilience of seagrass meadows. We developed a Japanese parrotfish species identification method using PCR-RFLP analysis. Applying this technique to parrotfish juveniles collected from seagrass beds and sargassum beds, we were able to identify nine species from the former and 5 species from the latter.
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Report
(4 results)
Research Products
(15 results)
