BIOCOMPLEXITY - INCUBATION ACTIVITY: Quantitative description of the response of a complex system to disturbance: subsurface microbial communities and chemical contaminants

生物复杂性 - 孵化活动：复杂系统对扰动响应的定量描述：地下微生物群落和化学污染物

• 批准号: 0083839
• 负责人: Roseanne Ford
• 金额: $ 6.13万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-10-01 至 2003-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0083839&HistoricalAwards=false
• 关键词: BIOCOMPLEXITY; INCUBATION; ACTIVITY; Quantitative; description

Ford 0083839The release of chemical pollutants into groundwater disturbs the resident microbial community and triggers a complex network of feedback loops affecting the groundwater geochemistry, soil structure and microbial diversity of the system. Human intervention in the form of engineered remediation to restore the site introduces yet another disturbance to which the microbial community and abiotic components of the systems must respond. An emergent property typically associated with microbial communities is homeostasis. The objective of this research is to test the homeostasis hypothesis for a subsurface microbial community under the stress of a chemical pollutant release and the remedial actions which may follow.To accomplish this objective will require effective collaboration among a team of scientists and engineers with expertise in microbiology, hydrology, biogeochemistry, engineering, ecological modeling, adaptive control theory, and data visualization. Incubator activities are designed to foster communications between experimentalists with an understanding of the physical system and mathematical modelers with quantitative tools for characterizing and predicting properties of the system. A relatively simple laboratory experiment [two bacterial species within a fixed-film flow-through column with a reactive mineral surface (iron) that serves as an alternative election acceptor in the absence of oxygen] is defined in order to explore three modeling approaches: (1) system of nonlinear partial differential equations for each species, (2) metabolic modeling, and (3) adaptive control theory. This prototype system will be used to focus the interdisciplinary discussions on a concrete problem and facilitate productive interactions. Additional modeling approaches will be explored through a brainstorming session, computer systems and a follow-up videoconference. A written summary from the workshop will be published in technical news journals to benefit the scientific community at large.

福特0083839将化学污染物释放到地下水中扰乱了居民微生物群落，并触发了一个复杂的反馈回路网络，影响了地下水地球化学，土壤结构和系统的微生物多样性。 以工程修复形式进行的人为干预以恢复该站点引入了又一次的干扰，对系统的微生物群落和非生物组成部分必须做出响应。 通常与微生物群落相关的新兴财产是体内平衡。 这项研究的目的是在化学污染物释放的压力下测试地下微生物群落的体内平衡假设以及可能随后的补救措施。要实现这一目标，这将需要在科学家和工程师团队中有效合作，这些科学家和工程师在微生物学，水文学，生物学，工程，工程，工程，生态模型模型，适应性控制，适应性控制，数据可视性和数据可视化中的专业知识。 孵化器活动旨在通过了解物理系统和数学建模者的实验者之间的通信，并使用定量工具来表征和预测系统的性质。 一个相对简单的实验室实验[在没有氧气的情况下用作反应性矿物表面（铁）的固定膜流动柱中的两个细菌物种，该实验具有反应性矿物表面（铁），该矿物表面是替代的选举受体]，以探索三种建模方法：（1）每个物种的非线性部分微分方程系统（（2）每个物种（（2）代理模型和（3）定型，以及（3）定型。 该原型系统将用于将跨学科讨论集中在具体问题上，并促进生产性相互作用。 将通过集思广益的会话，计算机系统和后续视频会议来探索其他建模方法。 研讨会的书面摘要将在技术新闻期刊上发表，以使整个科学界受益。