Sedimentation and invasive species in rivers: Investigation in trialling of mitigation options relevant to invasive non-native species sediment inputs

河流中的沉积物和入侵物种：与入侵性非本地物种沉积物输入相关的缓解方案试验的调查

• 批准号: 2444974
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2444974
• 关键词: Sedimentation; invasive; species; rivers; Investigation

Invasive non-native species (INNS) such as Himalayan Balsam and Signal Crayfish are known to cause increased sediment erosion in river ecosystems. This increased sediment causes a negative impact on instream biota and threatens Water Framework Directive status deterioration, as well as increased cost to river managers and water companies who must remove excess sediment to treat water to drinking standards and stabilise stream banks to limit further impact. Present management is largely ineffective due to the prevalence of these species and the lack of suitable control measures. This research will trial a number of different management techniques aimed at mitigating the impact of sedimentation due to INNS, in addition to improving riparian biodiversity, amenity value and ecological resilience. The successful candidate will undertake field and possibly laboratory experiments to determine the role of INNS in river sedimentation, identify which management techniques are best suited to prevent INNS related sedimentation, and quantify any additional biodiversity, flood risk and amenity benefits INNS mitigation measures may have which will help deliver EU Water Framework Directive requirements.

入侵的非本地物种（INNS），如喜马拉雅香脂和信号小龙虾，已知会导致河流生态系统中沉积物侵蚀的增加。这种增加的沉积物对水生生物群造成负面影响，并威胁到水框架指令状态的恶化，以及河流管理者和水务公司的成本增加，他们必须清除多余的沉积物以将水处理到饮用水标准，并稳定河岸以限制进一步的影响。由于这些物种的普遍存在和缺乏适当的控制措施，目前的管理在很大程度上是无效的。这项研究将尝试一些不同的管理技术，旨在减轻因INNS沉积的影响，除了改善河岸生物多样性，舒适价值和生态恢复力。成功的候选人将进行实地和可能的实验室实验，以确定INNS在河流沉积中的作用，确定哪些管理技术最适合防止INNS相关沉积，并量化任何额外的生物多样性，洪水风险和舒适的好处INNS缓解措施可能有这将有助于实现欧盟水框架指令的要求。