“…The use of water hyacinths as an alternative to waste-water treatment is presented in [20,12,18,14,23], and [9,10], showing interactions of two or more aquatic plants using a wastewater treatment. The works [4,21] solve optimization problems to find the optimal population level which keeps a best performance of the concerning system, taking into account only a temporal evolution. Spatiotemporal control has been proposed in the recent works [5], used as an application to a water hyacinths population.…”