ASSESSMENT OF METAL CONTAMINATION AND ECOLOGICAL IMPLICATIONS

金属污染和生态影响的评估

• 批准号: 6106317
• 负责人: Timothy Edgcumbe Ford
• 金额: $ 26.89万
• 依托单位: HARVARD MEDICAL SCHOOL
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-04-01 至 2000-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6106317
• 关键词: Crustacea; Gramineae; biotransformation; cadmium; copper; detoxification; environmental toxicology; fish; food chain contamination; fresh water environment; halobiphenyl /halotriphenyl compound; industrial waste; lead; mercury; metal poisoning; nickel; plasmids; radionuclides; saltwater environment; water environment; water microbiology; water pollution; water sampling /testing

This project is designed to evaluate the interrelationships between the microbial community and pollutants in the New Bedford Harbor area, an EPA designated Superfund Site, and obtain a comprehensive evaluation of the health of the ecosystem. This project will build on an extensive database obtained in the first three years of our nIEHS sponsored superfund project, designed to measure the distribution and transport of toxic metals throughout the New Bedford Harbor area. This next phase of the research is divided into three parts: bioavailability and bioaccumulation rates of contaminants, effect of remediation efforts on the ecosystem health, and the development of a "microbial community biomarker" of environmental stress. Part one will extend current research on metal fluxes from sediments and address subsequent bioavailability of toxic metals to the biota and bioaccumulation through the food chain, from sediment invertebrates through the crustacea to the edible species, particularly the economically important Winter Flounder. Part two will examine contaminant plumes released from dredging activity and closely monitor the effect on the biota at specific locations. This will include an evaluation of the effects of remediation on New Bedford Harbor salt marshes. Salt marsh ecology would be expected to responds rapidly to changes in ecosystem health. The third part is designed to characterize the microbial communities from polluted and clean sites both microbiologically and genetically. This research is designed primarily to produce microbial ecosystem parameters that can be considered biomarkers of environmental stress.

该项目旨在评估 新贝德福德港地区的微生物社区和污染物，EPA 指定的超级基金网站，并获得对 生态系统的健康。 该项目将基于广泛的数据库 在我们的NIEHS赞助超级基金项目的前三年获得 设计用于测量有毒金属的分布和运输 在整个贝德福德港地区。 下一阶段的研究是 分为三个部分：生物利用度和生物积累率 污染物，修复工作对生态系统健康的影响，以及 开发环境的“微生物社区生物标志物” 压力。 第一部分将扩大有关沉积物金属通量的当前研究 解决随后的有毒金属的生物利用度到生物群和 通过食物链的生物积累，从沉积物无脊椎动物到 可食用物种的甲壳类，特别是经济上 重要的冬季比目鱼。 第二部分将检查污染物羽毛 从挖泥活动中释放并密切监视对生物群的影响 在特定位置。 这将包括对 新贝德福德港盐沼的补救。 盐沼泽的生态会 期望对生态系统健康的变化做出迅速反应。 第三 零件旨在表征受污染的微生物群落 并在微生物学和遗传上清洁位点。 这项研究是 设计主要是为了产生微生物生态系统参数 被认为是环境压力的生物标志物。