1997 Fiscal Year Final Research Report Summary
Resource utilization and interspecific relationships shore animals.
| Project/Area Number |
07454212
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
生態
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
MORI Keisuke KYUSHU UNIVERSITY Faculty of Science, Research associate, 理学部, 助手 (50243887)
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| Co-Investigator(Kenkyū-buntansha) |
NOJIMA Satoshi KYUSHU UNIVERSITY Faculty of Science, Associate Professor, 理学部, 助教授 (30112288)
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| Project Period (FY) |
1995 – 1997
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| Keywords | Benthic community / Benthos population / Boulder shore / Intertidal / Food web / Interspecific competition / Food resource / Field manipulation experiment |
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| Research Abstract |
1.Boulder shore community : We showed two species of Buccinidae snail had two feeding mode ; carrion-feeding and hunting other snail. Detailed distribution of two species were investigated. Community structures on the intertidal and subtidal area were clarified, and the effects of boulder size and construction on the community structure were clarified also. Vertical distribution patterns of relative five species of limpet snail were investigated in detail, and defference of vertical distribution pattern of these species were determined by vertical migration after settlement. Two-direction sex change of an intertidal sea cucumber was clarified through field cagingexperiment.
2.Rocky shore community : Shell plates of dead barnacle were remained, and the space in the shell was utilized by small organisms. The small barnacle, Chthamalus challengeri were preferred by small mobile mollusks. At the other hand, the large barnacle, Tetraclita japonica was utilized several group of animals ; mollsuca, crustacea, polychaeta etc. Barnacle shell influenced the vertical distribution of some small organisms.
3. Subtidal community : Shelter effect on gathering of a sea urchin was shown by field observations and laboratory experiments. Water depth effect on growth, reproduction and recruitment of some scleractinian coral species were investigated.
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