2013 Fiscal Year Research-status Report
| Project/Area Number |
25450260
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Research Institution | Nagasaki University |
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Principal Investigator |
ニシハラ グレゴリーナオキ 長崎大学, 水産・環境科学総合研究科, 准教授 (40508321)
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| Co-Investigator(Kenkyū-buntansha) |
河端 雄毅 長崎大学, 水産・環境科学総合研究科, 助教 (50606712)
寺田 竜太 鹿児島大学, 水産学部, 准教授 (70336329)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 藻場 / 生態系一次生産量 / 季節変動 |
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| Research Abstract |
By elucidating the mechanisms that drive the productivity of marine macrophyte ecosystems, we will be able to develop monitoring systems and methodologies to restore, expand, and protect these valuable areas. In the first year of this project, we have been able to develop a system that can monitor the dissolved oxygen concentrations, underwater and surface photosynthetic photon flux densities, water temperature, chlorophyll-a concentrations, and surface wind velocities of coastal areas occupied by Sargassum spp. and Zostera marina communities. Furthermore, we are steadily constructing a model that can estimate the gross ecosystem productivity of these ecosystems using a state-space formulation of oxygen dynamics and Bayesian inference. Through these achievements, we have been able to infer the seasonal changes in gross ecosystem production of these ecosystems in Omura Bay, Nagasaki, Japan. Our results show that the system is providing enough information to show that fluctuations in gross ecosystem production is associated with changes in the biomass of Sargassum spp. and Zostera marina, as expected. A number of presentations have been given regarding these results.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
We are steadily collecting data from Omura Bay, Nagasaki, however our efforts to collect data from Kagoshima Bay, Kagoshima are inadequate. Poor weather and timing are a few of the problems encountered. Nevertheless, we have been able to prepare the field site at Kagoshima Bay and have deployed the system to collect data in early 2014. Additionally, although we have collect data on the nutrient conditions of the field site, a thorough analysis remains to be completed.
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| Strategy for Future Research Activity |
We plan to continue our field research in Omura Bay, Nagasaki and collect more from Kagoshima Bay, as originally planned. Some of the results are expected to be presented in a number of conferences this fiscal year.
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| Expenditure Plans for the Next FY Research Funding |
Funds remained at the end of the fiscal year, because we were unable to conduct field work in Kagoshima as planned, and that unplanned need to repair and replace equipment (Aricle Costs) occurred.
The remaining funds are planned to be used to fund Travel and Article Costs.
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[Presentation] Gross ecosystem production of Zostera marina meadows2013
Author(s)
Ryutaro Kimura, Gregory N. Nishihara, Ryuta Terada, and Kotoe Okamura
Organizer
9th International Conference on the Marine Biodiversity and Environmental Fisheries Science of the East China Sea
Place of Presentation
National Taiwan Ocean University (Keelung)
Year and Date
20130929-20131001
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