Trophic state and toxic cyanobacteria density in optimization modeling of multi-reservoir water resource systems.
The definition of a synthetic index for classifying the quality of water bodies is a key aspect in integrated planning and management of water resource systems. In previous works [1,2], a water system optimization modeling approach that requires a single quality index for stored water in reservoirs has been applied to a complex multi-reservoir system. Considering the same modeling field, this paper presents an improved quality index estimated both on the basis of the overall trophic state of the water body and on the basis of the density values of the most potentially toxic Cyanobacteria. The implementation of the index into the optimization model makes it possible to reproduce the conditions limiting water use due to excessive nutrient enrichment in the water body and to the health hazard linked to toxic blooms. The analysis of an extended limnological database (1996-2012) in four reservoirs of the Flumendosa-Campidano system (Sardinia, Italy) provides useful insights into the strengths and limitations of the proposed synthetic index.
Hydraulic Sector, Department of Civil an Environmental Engineering and Architecture, University of Cagliari, via Marengo 2, Cagliari 09123, Italy. asulis@unica.it.
Andrea
A
Sulis
Sardinian Water System Management Authority, Regional Government, via Mameli 88, Cagliari 09123, Italy. paola.buscarinu@enas.sardegna.it.
Paola
P
Buscarinu
Sardinian Water System Management Authority, Regional Government, via Mameli 88, Cagliari 09123, Italy. orn.soru@gmail.com.
Oriana
O
Soru
Hydraulic Sector, Department of Civil an Environmental Engineering and Architecture, University of Cagliari, via Marengo 2, Cagliari 09123, Italy. sechi@unica.it.
Giovanni M
GM
Sechi
D000818:Animals; D001427:Bacterial Toxins / Q000378:metabolism*; D000458:Cyanobacteria / Q000254:growth & development* / Q000378:metabolism; D000087522:Cyanobacteria Toxins; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D005618:Fresh Water / Q000382:microbiology*; D057097:Harmful Algal Bloom; D006801:Humans; D007558:Italy; D008387:Marine Toxins / Q000378:metabolism*; D052998:Microcystins / Q000378:metabolism*; D008954:Models, Biological; D011156:Population Density; D018570:Risk Assessment; D013997:Time Factors; D014871:Water Microbiology; D062066:Water Resources / Q000032:analysis*
D001427:Bacterial Toxins; D000087522:Cyanobacteria Toxins; D008387:Marine Toxins; D052998:Microcystins