2013 Fiscal Year Final Research Report
Theoretical explanations for the microbial effects on physicochemical environmental conditions from the stand point of Ecology, Geochemistry, and Evolution.
| Project/Area Number |
23770024
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Ecology/Environment
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| Research Institution | Nara Women's University |
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Principal Investigator |
SETO Mayumi 奈良女子大学, 自然科学系, 助教 (10512717)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 微生物群集 / 数理モデル / 化学合成細菌 / 個体群動態 / 物質循環 / 作用-反作用 / 微生物生態系 |
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| Research Abstract |
The objective of this study was to theoretically explore the biological effects on physicochemical environmental conditions from the stand point of ecology, evolution, and geochemistry. Mathematical models describing microbial ecosystems were analytically and numerically examined to compare the behavior of the models with and without microbial effects on environmental conditions (pH, concentrations of nutrients and heavy metals, and Gibbs free energy etc.) . The results indicated that microbial effects on environmental conditions affect ecosystem stability and population extinction risk. Furthermore, microbial activities may control fluxes and speciation of redox species, and consequently the Gibbs energy of ecosystems.
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