Theoretical explanations for the microbial effects on physicochemical environmental conditions from the stand point of Ecology, Geochemistry, and Evolution.

从生态学、地球化学和进化的角度对微生物对物理化学环境条件的影响进行理论解释。

• 批准号: 23770024
• 负责人: SETO Mayumi
• 金额: $ 2.91万
• 依托单位: Nara Women's University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23770024/
• 关键词: 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; 国際研究者交流; 国際情報交換; カナダ; University of Waterloo; 作用・反作用; 微生物群衆; 海洋酸性化; pH

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.

本研究的目的是从生态学、进化和地球化学的角度理论上探讨生物对物理化学环境条件的影响。对描述微生物生态系统的数学模型进行了分析和数值检验，以比较有和没有微生物对环境条件（pH、营养物和重金属浓度以及吉布斯自由能等）影响的模型的行为。结果表明，微生物对环境条件的影响会影响生态系统的稳定性和种群灭绝的风险。此外，微生物活动可以控制氧化还原物质的通量和形态，从而控制生态系统的吉布斯能量。

项目成果

Invasibility of chemotrophic species: a combination of thermodynamic and kinetic approach

化能物种的入侵：热力学和动力学方法的结合

• 发表时间: 2013
• 作者: Aiba S;Akutsu K and Onoda Y;Mayumi Seto
• 通讯作者: Mayumi Seto

Shigeki Wada, and Masao Ishii, Potential biological pH buffering effect and regime shift

Shigeki Wada 和 Masao Ishii，潜在的生物 pH 缓冲效应和状态转变

• 发表时间: 2012
• 作者: Kazufumi Hosoda;Akihiro Asao; Shingo Suzuki;Tetsuya Yomo.;上田昇平，野沢泰斗，松月哲也，関諒一，島本晋也，市野隆雄;Mayumi Seto
• 通讯作者: Mayumi Seto

Invasibility of chemotrophic species : a combination of thermodynamic and kinetic approach

化能物种的入侵：热力学和动力学方法的结合

• 发表时间: 2013
• 作者: Shimizu-kaya;U.;Okubo;T.;Inui;Y.;and Itioka;T.;Mayumi Seto
• 通讯作者: Mayumi Seto

Competition between microbial and abiotic Fe(II) oxidation : a kinetic modeling approach

微生物和非生物 Fe(II) 氧化之间的竞争：动力学建模方法

• 发表时间: 2013
• 作者: Ishizaki S.;Shiojiri K.,Karban R.;Ohara M.;上田昇平，野沢泰斗，松月哲也，関諒一，島本晋也，市野隆雄;Mayumi Seto and Philippe Van Cappellen
• 通讯作者: Mayumi Seto and Philippe Van Cappellen

Possible effects of ocean acidification on a phytoplankton-pH feedback

海洋酸化对浮游植物 pH 反馈的可能影响

• 发表时间: 2012
• 作者: Mayumi Seto;Shigeki Wada;and Masao Ishii
• 通讯作者: and Masao Ishii