Functional Flows in Modified Riverscapes: Hydrographs, Habitats and Opportunities

摘要: Building on previous environmental flow discussions and a growing recognition that hydrogeomorphic processes are inherent in the ecological functionality biodiversity of riverscapes, we propose functional-flows approach to managing heavily modified rivers. The focuses retaining specific process-based components hydrograph, or functional flows, rather than attempting mimic full natural regime. Key include wet-season initiation peak magnitude recession dry-season low interannual variability. We illustrate importance each key using examples from western US rivers with seasonably predictable regimes. To maximize these connectivity morphologically diverse overbank areas must be enhanced both space time, consideration given sediment-transport Finally, provide guiding principles for developing flows incorporating into existing frameworks.