SGER: Regulation of Metal Bioavailability in Floodplain Continuum by Carbon and Sulfur Cycling

SGER：通过碳和硫循环调节洪泛区连续体中的金属生物利用度

• 批准号: 0322042
• 负责人: Domy Adriano
• 金额: $ 9.99万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0322042&HistoricalAwards=false
• 关键词: SGER; Regulation; Metal; Bioavailability; Floodplain

0322042AdrianoThe spatial variabilities of contaminants, microbial activity, and community structure are being measured at a floodplain site on the Tisza River floodplain in Hungary in a search for relationships over a variety of scales between soil microbial activity and in situ concentrations of heavy metals (Pb, Zn, Cu, Cd & As), both in solution and as bound to solid phases. Stochastic modeling will be used to study metal availability to plants. The floodplain has experienced episodic discharges of heavy metal wastes from overflows from upstream storage reservoirs during major flood events in 2000-01. Researchers from the Univ. of Georgia, UC-Riverside and Oklahoma State are working in cooperation with colleagues from Debrecen Univ. and the Hungarian Academy of Science to assess how metal dynamics is being regulated by interactions between microbial communities and nutrients (C & S) and to evaluate resulting long-term ecological effects. The work would specifically generate data for understanding the role of microbial assemblages and carbon and sulfur compounds on metal dynamics in the context of heterogeneities in soil type and redox potential across the floodplain. Results will be integrated into the SREL and the Hungarian outreach programs to support research and education at all levels.

0322042Adriano正在匈牙利蒂萨河洪泛区的洪泛区测量污染物、微生物活动和群落结构的空间变异性，以寻找土壤微生物活动与重金属（铅、锌、铜、镉和砷）原位浓度（无论是在溶液中还是与固相结合）在各种尺度上的关系。 随机模型将用于研究植物的金属可用性。 在 2000 年 1 月的重大洪水事件期间，洪泛区曾因上游蓄水池溢流而间歇性排放重金属废物。 来自大学的研究人员。乔治亚州、加州大学河滨分校和俄克拉荷马州立大学正在与德布勒森大学的同事合作。和匈牙利科学院合作评估微生物群落和营养物 (C & S) 之间的相互作用如何调节金属动力学，并评估由此产生的长期生态影响。 这项工作将专门生成数据，以了解在整个洪泛区土壤类型和氧化还原电位的异质性背景下，微生物组合以及碳和硫化合物对金属动力学的作用。 结果将纳入 SREL 和匈牙利外展计划，以支持各级研究和教育。