Muddied Waters: The Case for Mitigating Sediment and Nutrient Flux to Optimize Restoration Response in the Murray-Darling Basin, Australia

摘要: The waters of the Murray Darling Basin, Australia, have endured multiple stressors for more than a century. Detectable salinisation impacts are evident from 1880 CE and elevated fluxes sediments nutrients now widespread. Most wetlands examined paleolimnologically shown increased sedimentation rates or lost aquatic plant communities due to shading effect turbidity, prompting observation that waterways Basin among ten Australian ecosystems most at risk tipping points. This post-European heightened sediment flux threatens potential ecological recovery application scarce expensive environmental water. Nutrients fine implicated as drivers regime shifts advantage phytoplankton inhibit growth productive macrophyte beds. However, with river channels identified likely sources sediment-bound phosphorous, it remains possible documented changes represent an ongoing response continued doses River. Syntheses paleolimnological records provide evidence management focus be on supply maximise benefit flow allocations. Here we use paleolimnology examine in detail nature magnitude subset 17 wetlands, propose means optimising bounce release waters, encumbered high nutrients, floodplains.