Controls on Plant Bioavailability in Salt Marsh Environments Which Can Be Manipulated for Contaminated Sediment Remediation

盐沼环境中植物生物利用度的控制可用于污染沉积物修复

• 批准号: 9706317
• 负责人: Richard Lee
• 金额: --
• 依托单位: Skidaway Institute of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-15 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9706317&HistoricalAwards=false
• 关键词: Controls; Plant; Bioavailability; Salt; Marsh

LEE DEB 9706317 Research will examine the effect of plants, both native and transgenically modified species, their rhizosphere communities and microbial mats on the bioremediation of sediments contaminated with high levels of mercury and PCBs. The project will include studies to: characterize (chemically, physically and biologically) the contaminated sediments; establish salt marsh and brackish water systems in mesocosms using the recently constructed Bioremediation and Environmental Research Mesocosm (BERM) facility at Skidaway Institute; evaluate various manipulative strategies for their affect on the accumulation and transformation of contaminants by plants growing in the mesocosms; and, test the most promising strategies from the mesocosms studies in the field. The results of the research should begin to establish a more complete understanding of the roles of various ecosystem components on bioremediation under field conditions as well as test the utility of selected transgenic species for their use as part of a multi-component bioremediation methodology.

Lee DEB 9706317研究将研究植物、其根际群落和微生物垫对被高水平汞和多氯联苯污染的沉积物的生物修复的影响，包括本地和转基因物种。该项目将包括以下研究：(从化学、物理和生物学角度)确定受污染沉积物的特征；利用斯基德韦研究所最近建造的生物修复和环境研究系统(BERM)，在中生态系统中建立盐沼和咸水系统；评估各种操作策略对在中生态系统中生长的植物对污染物积累和转化的影响；以及在实地测试中生态系统研究中最有希望的策略。研究结果应开始更全面地了解不同生态系统组成部分在田间条件下对生物修复的作用，并测试选定的转基因物种作为多组分生物修复方法的一部分的实用性。