2005 Fiscal Year Final Research Report Summary
Studies on the community structures of el Nino-influenced coastal ecosystems in tropical Pacific : consideration of fisheries potentials
| Project/Area Number |
14255013
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
General fisheries
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| Research Institution | KYUSHU UNIVERCITY |
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Principal Investigator |
TOKESHI Mutsunori Kyushu University, Faculty of Sciences, Professor, 大学院理学研究院, 教授 (30291983)
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| Co-Investigator(Kenkyū-buntansha) |
NOJIMA Satoshi Kyushu University, Faculty of Sciences, Associate Professor, 大学院理学研究院, 助教授 (30112288)
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| Project Period (FY) |
2002 – 2005
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| Keywords | tropical Pacific / coastal ecosystems / el Nino phenomena / coral reef ecosystems / fish assemblages / interspecific relations |
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| Research Abstract |
1. The community structures of el Nino-influenced coastal ecosystems in tropical Pacific were investigated, with particular reference to fisheries potentials.
2. Underwater visual observation of fish fauna was conducted in the shallow reef habitats of eastern Indonesia. Over 400 species of fish have been identified, of which Pomacentridae and Labridae were dominant in terms of the number of species.
3. Species richness is an important measure of diversity in biodiversity studies. A new procedure for estimating species richness in species-rich assemblages such as coral reef fishes was proposed and discussed. Fisheries catch statistics were also analysed with data derived from North Sulawesi.
4. Patterns of abundance and recruitment in the coral assemblages of a reef in North Sulawesi were investigated through a combination of field surveys and experiments.
5. Population fluctuations in two predatory starfish species (Heliaster helianthus and Stichaster striatus) and their mussel prey (Semimytilus algosus and Perumytilus purpuratus) were studied in central Peru. Fisheries statistics were also collected for analysis in relation to el Nino phenomena.
6. Interspecific relationships were examined in sessile and mobile assemblages of subtropical western Pacific, as a basis for understanding variability in community structure of tropical coastal ecosystems.
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