RUI: Nonequilibrium Determinants of Microbial Community Structure in Intertidal Sediments: Role of Deposit Feeding

RUI：潮间带沉积物中微生物群落结构的非平衡决定因素：沉积物摄食的作用

• 批准号: 0108615
• 负责人: Craig Plante
• 金额: $ 22.33万
• 依托单位: College of Charleston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0108615&HistoricalAwards=false
• 关键词: RUI; Nonequilibrium; Determinants; Microbial; Community

DEB-0108615PlanteBacteria serve dual roles in sedimentary systems: as decomposers of organic detritus and as food for higher organisms. Key ecological parameters such as abundance, production, and community composition each contribute to the character of these roles. The primary objectives of the research proposed here are to determine the mechanisms by which bacterial assemblages recover from ingestion by sediment-feeding invertebrates (deposit feeders), and to assess the importance of this biological disturbance to the structure of sedimentary bacterial communities. We will determine the significance of nonequilibrium factors in creating spatio-temporal heterogeneity and maintaining diversity in microbial communities exposed to deposit feeding in particular, and disturbances in general. We hope to reveal those important variables required to construct and test patch dynamics models, thereby providing a basis for predictions regarding the community structure and metabolic activities of indigenous and introduced bacteria in sediments.

deb-0108615氯酸杆菌在沉积系统中起双重作用：作为有机碎屑的分解体和较高生物体的食物。 关键的生态参数，例如丰富，生产和社区组成，每个角色都有促进这些角色的特征。 这里提出的研究的主要目标是确定通过喂养无脊椎动物（沉积喂食者）从摄入中恢复细菌组合的机制，并评估这种生物学扰动对沉积细菌群落结构的重要性。 我们将确定非平衡因素在创建时空异质性和维持尤其是沉积喂养的微生物群落的多样性方面的重要性，通常是干扰。 我们希望揭示构建和测试补丁动力学模型所需的重要变量，从而为土著和引入沉积物中的土著和引入细菌的社区结构和代谢活动的预测提供了基础。