Restoration from eutrophication in interconnected reservoirs: Using a model approach to assess the propagation of water quality improvements downstream along a cascade system. (March 2022)

• Record Type: Journal Article
• Authors: Vieira Soares, Laura Melo; Calijuri, Maria do Carmo
• Is Part Of: Environmental modelling & software. Volume 149(2022)
• Publication Date: 2022-03
• Subjects: Lake degradation -- GLM-AED model -- Phosphorus -- Chlorophyll-a -- Trophic state index -- Water management; Environmental monitoring -- Computer programs -- Periodicals; Ecology -- Computer simulation -- Periodicals; Digital computer simulation -- Periodicals; Computer software -- Periodicals; Environmental Monitoring -- Periodicals; Computer Simulation -- Periodicals; Environnement -- Surveillance -- Logiciels -- Périodiques; Écologie -- Simulation, Méthodes de -- Périodiques; Simulation par ordinateur -- Périodiques; Logiciels -- Périodiques; Computer software; Digital computer simulation; Ecology -- Computer simulation; Environmental monitoring -- Computer programs; Periodicals; Electronic journals; 363.70015118
• DOI: 10.1016/j.envsoft.2022.105308
• Languages: English
• ISSNs: 1364-8152

Abstract

Abstract: A coupled hydrodynamic-biogeochemical model was applied to simulate scenarios of classic restoration practices to address eutrophication in a cascade system comprised of six reservoirs along the Tietê River (Brazil) from 2008 to 2016. Each restoration scenario was propagated along the cascade system by using a sequential modelling approach. The simulated scenarios revealed which on-land and in-lake restoration techniques are capable of promoting water quality improvements that are propagated to all downstream reservoirs along the cascade system. The present findings may provide a useful management strategy to develop better restoration practices at a basin catchment scale for other lakes and reservoirs along cascade systems worldwide, especially in highly anthropogenic impacted areas, taking advantage of the propagation of water quality improvements in a downstream direction due to a domino effect triggered by the feedback from one water body to the next in a chain. Highlights: Scenarios of restoration practices were propagated along a reservoir's cascade system. The reduction of phosphorus loads was efficient for restoration at the basin catchment scale. The reduction of phytoplankton biomass was not propagated along the cascade system.