Aquatic Sciences and Biogeochemistry

水生科学和生物地球化学

• 批准号: 1000228330-2012
• 负责人: Guéguen, Céline
• 金额: $ 5.46万
• 依托单位: Trent University
• 依托单位国家: 加拿大
• 项目类别: Canada Research Chairs
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=642909
• 关键词: Aquatic; Sciences; Biogeochemistry

Dissolved organic matter (DOM) regulates the transport and bioavailability of metals in aquatic ecosystems and, despite its prominent environmental role, its characterisation and reactivity toward metals are still matters of debate. A multivariate approach for the biogeochemical characterization of DOM will be developed and applied to DOM from various aquatic ecosystems including terrestrial and marine arctic systems. By bridging laboratory experiments and in situ observations, this innovative research program will yield a comprehensive understanding of the fate and mobility of metals and of the impact of environmental constraints on pollutant pathways. The results of this research program will provide a more reliable tool to risks assessors for the prediction of both anthropogenic impact and environmental change.

溶解有机物（DOM）调节水生生态系统中金属的运输和生物利用度，尽管其具有突出的环境作用，但其特征和对金属的反应性仍然存在争议。将开发一种多元生物地球化学表征DOM的方法，并将其应用于各种水生生态系统（包括陆地和海洋北极系统）的DOM。通过连接实验室实验和现场观察，这一创新研究项目将对金属的命运和流动性以及环境限制对污染物途径的影响产生全面的了解。该研究项目的结果将为风险评估人员预测人为影响和环境变化提供更可靠的工具。