Bioremediation and pathogen load reduction potential of bacterial and mycorrhizal communities in natural and constructed wetland systems

自然和人工湿地系统中细菌和菌根群落的生物修复和病原体负荷减少潜力

• 批准号: RGPGP-2014-00060
• 负责人: Slawson, Robin
• 金额: $ 2.62万
• 依托单位: Wilfrid Laurier University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Group
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=610513
• 关键词: Bioremediation; pathogen; load; reduction; potential

Sustaining Canadian society requires reliable access to clean water; however, human activities have been responsible for contaminating ground and surface water supplies. Human population growth is also placing more pressure on limited water supplies. Therefore, contaminant protection from source water supplies is necessary. This can occur through conventional wastewater treatment plant (WWTP) processing, natural removal through existing wetlands or by a combination of WWTPs and discharge to constructed wetlands. It is well recognized that microbial and plant communities are responsible for contaminant removal in constructed and natural wetlands, however, optimizing the process has been limited by a lack of understanding of the roles, and interaction among these wetland species. The goal of our research program is to understand how three-way interactions occurring between plants, fungi and bacteria affect contaminant and pathogen removal in constructed and natural wetlands, and how the interactions can be improved in order to increase contaminant removal. Through field and laboratory studies, we will describe relationships among wetland biota, gauge contaminant removal efficiencies of select groupings of plant/fungal and bacterial communities, measure the stability of these groups and identify specific processes involved. Our research will address the questions: How do site conditions and dominant plant species affect microbial community structure? Do different groupings of plant, fungal and bacterial communities differ in contaminant removal efficiency? How stable are the communities? What mechanisms underlie the efficiency of a given community? Addressing these questions will lead to better wetland management strategies in the ongoing use of these systems to protect clean water.

维持加拿大社会需要可靠的清洁水源；然而，人类活动对地表水供应的污染负有责任。人口增长也给有限的水供应带来了更大的压力。因此，有必要对水源进行污染防护。这可以通过传统的污水处理厂（WWTP）处理，通过现有湿地自然去除，或通过WWTP和排放到人工湿地的组合来实现。众所周知，在人工湿地和天然湿地中，微生物和植物群落负责污染物的去除，然而，由于缺乏对这些湿地物种的作用和相互作用的了解，优化过程受到限制。