| Project/Area Number |
20KK0164
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| Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 45:Biology at organismal to population levels and anthropology, and related fields
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
REIMER JD 琉球大学, 理学部, 教授 (20452956)
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| Co-Investigator(Kenkyū-buntansha) |
成瀬 貫 琉球大学, 熱帯生物圏研究センター, 准教授 (30398309)
櫛田 優花 立正大学, 地球環境科学部, 助教 (90914341)
MASUCCI GIOVANNI・DIEGO 琉球大学, 理工学研究科, 博士研究員 (80890053)
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| Project Period (FY) |
2020-10-27 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2023: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2022: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2021: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
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| Keywords | eDNA / degradation / anthropogenic impacts / coral reefs / marine biodiversity / coral / fish / oceanic islands / Ogasawara / marine ecosystem / anthropogenic impact / oceanic island / biodiversity / anthropogenic pressure / marine ecosystems |
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| Outline of Research at the Start |
We will utilize environmental DNA data over four years from pristine and anthropogenically impacted sites in Australia and Japan to 1) examine total coral community biodiversity from microbes to megafauna, 2) examine how biodiversity in oceanic regions is linked with mainland sites, and 3) examine how human impacts affect biodiversity and linkages between these sites.
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| Outline of Final Research Achievements |
To investigate whether oceanic islands experience the same patterns of degradation as mainland sites, we examined the environmental DNA of sites on the Japanese mainland and Ogasawara. We conducted field work in Ogasawara with Australian collaborators and collected eDNA samples around southern Japan. Our dataset shows that human-impacted sites are not necessarily less diverse, but rather may have different biodiversity. Initial analysis shows that the impacted sites have commonalities across different regions and sites, indicating that perhaps anthropogenic impacts are all altering marine ecosystems in specific ways, suggesting that a general theory of marine ecosystem degradation due to anthropogenic impacts may be within reach.
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| Academic Significance and Societal Importance of the Research Achievements |
Our analyses indicate there are common denominators to impacted sites across different sites, showing that anthropogenic impacts all change marine ecosystems in particular ways, and there may be some general theory of marine ecosystem degradation under anthropogenic influences within reach.
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