U.S-Slovene Research on Mercury Biogeochemistry in the Idrija River System, Slovenia

美国-斯洛文尼亚伊德里亚河系统汞生物地球化学研究，斯洛文尼亚

• 批准号: 9724012
• 负责人: Mark Hines
• 金额: $ 4.5万
• 依托单位: University of Alaska Anchorage Campus
• 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: 1997-08-01 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9724012&HistoricalAwards=false
• 关键词: U.S; Slovene; Research; Mercury; Biogeochemistry

INT 9724012 Hines This U.S.-Slovenian research project between Mark Hines of the University of Alaska, Anchorage, and Jadran Faganeli of the University of Ljubljana, Marine Biological Station, will examine the concentration, transport and dynamics of methylmercury in the aquatic ecosystems of the Idrija River system. Findings will be compared with parallel research on the Carson River in Nevada. Similarities and differences in these two systems will permit some delineation controls for net methylmercury formation and transport models. Results are expected to improve our ability to understand and predict the potential impact on human life and aquatic food chains from mercury cycling in rivers. The objectives of this multi-disciplinary investigation include: 1) locating sources and sinks of methylmercury; 2) studying bacterial processes such as mercury methylation and demethylation, genetic controls, and terminal decomposition processes; 3) defining the relationship between the sulfur cycle and mercury methylation and demethylation; and 4) examination of the effects of the marine environment on the transformation of mercury transported to the sea. As planned, the full effort involves the conduct of a survey along a gradient from pristine sites through contaminated regions to help develop a simulation model that can guide research and aid in determining how changes in the system may affect methylmercury flux and bioaccumulation. This project in ecology, earth sciences and environmental remediation fulfills the program objective of advancing scientific knowledge by enabling experts in the United States and Central Europe to combine complementary talents and pool resources in areas of strong mutual interest and competence. ??

INT 9724012 Hines 这是阿拉斯加大学安克雷奇分校的 Mark Hines 和卢布尔雅那大学海洋生物站的 Jadran Faganeli 之间的一项美国-斯洛文尼亚研究项目，将研究伊德里亚水生生态系统中甲基汞的浓度、迁移和动态。河流系统。 研究结果将与内华达州卡森河的平行研究进行比较。 这两个系统的相似之处和不同之处将允许对净甲基汞形成和传输模型进行一些描绘控制。 预计结果将提高我们理解和预测河流中汞循环对人类生命和水生食物链潜在影响的能力。 这项多学科调查的目标包括： 1) 查找甲基汞的源和汇； 2）研究细菌过程，如汞甲基化和去甲基化、遗传控制和最终分解过程； 3）定义硫循环与汞甲基化和去甲基化之间的关系； 4) 考察海洋环境对排入海洋的汞转化的影响。 按照计划，全部工作包括沿着从原始地点到污染区域的梯度进行调查，以帮助开发模拟模型，该模型可以指导研究并帮助确定系统的变化如何影响甲基汞通量和生物累积。 该项目涉及生态学、地球科学和环境修复，通过使美国和中欧的专家能够在共同感兴趣和能力强的领域结合互补人才和汇集资源，实现了推进科学知识的计划目标。 ??