Impacts of multiple interacting stressors on the environment: Investigating the fate, transport, and dynamic relationships between contaminant and nutrient cycles

多种相互作用的压力源对环境的影响：调查污染物和营养循环之间的命运、运输和动态关系

• 批准号: RGPIN-2017-06017
• 负责人: Mundle, Scott
• 金额: $ 1.68万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=634030
• 关键词: Impacts; multiple; interacting; stressors; environment

Water quality issues that lead to freshwater eutrophication are a rapidly intensifying global concern and the recent increase in eutrophic conditions in the Great Lakes has gained international attention. Elemental cycles, carbon regimes and metabolic processes are changing and we have little insight into the long-term effect these changes will have on large lake systems. The Great Lakes account for over 85% of North America’s freshwater supply and have had a history of water quality problems that peaked in the early 1970’s with cultural eutrophication in Lake Erie. Phosphate inputs were identified as a critical factor causing eutrophication that stimulated changes in environmental policies that led to a decline in eutrophication through to the 1990’s. However, recent rises in cyanobacteria blooms provide evidence for the re-eutrophication of Lake Erie. Despite many coordinated efforts that attempt to link eutrophication to phosphorus dynamics, it is becoming clear that the magnitude and complexity of this issue has moved beyond a simple phosphate-limited mechanism.

导致淡水富营养化的水质问题正在迅速加剧，这是全球关注的焦点，最近五大湖富营养化状况的加剧引起了国际社会的关注。元素循环、碳状况和代谢过程正在发生变化，但我们对长期影响却知之甚少。这些变化将对大型湖泊系统产生影响。五大湖占北美淡水供应的 85% 以上，并且历史上曾出现过水质问题，并在 1970 年代初因文化原因而达到顶峰。磷酸盐输入被认为是造成伊利湖富营养化的一个关键因素，刺激了环境政策的变化，导致富营养化现象在 20 世纪 90 年代有所下降。然而，最近蓝藻水华的增加为伊利湖的再富营养化提供了证据。尽管许多协调一致的努力试图将富营养化与磷动态联系起来，但越来越明显的是，这个问题的严重性和复杂性已经发生了变化。超越简单的磷酸盐限制机制。