Spatial and temporal variability of environmental flow indicators - developing the tools for an ecologically meaningful assessment of hydrological change

环境流量指标的时空变化 - 开发对水文变化进行具有生态意义的评估的工具

• 批准号: 5436473
• 负责人: Professorin Dr. Doerthe Tetzlaff
• 金额: --
• 依托单位: Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5436473?language=en
• 关键词: Spatial; temporal; variability; environmental; flow

Altfbough the role of hydrology in sustaining river ecosystems is recogised, there is still a major scientific challenge in fully understanding the way river hydrology and flow dynamics affect aquatic ecosystems. Consequently, the ways in which such interrelationships are influenced by human activities such as urbanisation or reservoir operation remain unclear. For an ecologically meaningful assessment of hydrological change, integrative approaches are needed that link the spatikal and temporal variability of hydrological parameters - whose effects are mediated by the physical characteristics of river channels (hydromorphology) - with ecological responses. The proposed project will investigate the variability of selected hydrological parameters, at a range of spatial and temporal scales, in nested research chatchments of relatively natural river systems in Scotland. The influence of such variability on aquatic ecosystems will also be assessed. In addition to a comprehensive statistical analysis of existing extensive discharge and biological data sets, complementary experimental measurements - both for discharge and ecological response - will also be conducted. Furthermore, the ecologically significant hydrological parameters will be applied in catchments with river regulation schemes for hydropower production. Thus hydrological changes and their ecological impacts will be assessed. The proposed project will contribute to the testing of existing hypotheses concerming the relationship between the ecological functioning of river systems and hydrological change. Such work will significantly contribute to the development of guidelines which are needed to protect and enhance the ecological status of rivers as required by the EU Water Framework Directive (WFD).

altfbough介绍了水文学在维持河流生态系统中的作用，在充分理解河流水文学和流动动力学影响水生生态系统的方式方面，仍然存在一个重大的科学挑战。因此，这种相互关系受到人类活动（例如城市化或水库运营）的影响的方式尚不清楚。为了对水文变化进行生态有意义的评估，需要采用综合方法，将水文参数的spatikal和时间变化联系起来，水文参数的效果是由河流通道的物理特征（Hydromorphology）介导的 - 与生态反应有关。拟议的项目将在苏格兰相对天然的河流系统的嵌套研究中，调查所选水文参数的变异性。这种变异性对水生生态系统的影响也将得到评估。除了对现有大量放电和生物数据集的全面统计分析外，还将进行互补的实验测量 - 用于排放和生态反应。此外，将在带有河流调节方案的集水区用于水力发电生产。因此，将评估水文变化及其生态影响。拟议的项目将有助于测试现有的假设，从而使河流系统的生态功能与水文变化之间的关系有所帮助。此类工作将极大地有助于制定准则，以保护和增强欧盟水框架指令（WFD）要求的河流的生态状况。