Spatio-temporal heterogeneity of the microbial community in subtropical reservoirs with different trophic status

• Grant number: 16/09405-1
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2016
• End date: October 31, 2018
• Field of knowledge: Engineering - Sanitary Engineering - Environmental Sanitation
• Principal Investigator: Maria do Carmo Calijuri
• Grantee: Maria do Carmo Calijuri
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Reservoirs are extremely important to the population, because they perform a strategic role in water supply and power generation to urban centers. In addition to these functions, these systems can also be used for irrigation, navigation and recreation. They are complex and dynamic systems and, as part of a hydrographic basin, detect all the effects of anthropogenic activities in the region. Eutrophication is one of the effects of these activities, due to the nutrient input arising from use and occupation of the land and from activities performed on the water body. A lot of the studies on the dynamics of nutrients and microbial community were performed in inland waters in temperate environments and in oligotrophic or already eutrophic conditions. There are few studies in subtropical ecosystems and in transition phase of the trophic state. The subtropical reservoirs that will be studied are in continuous and accelerated transition of the trophic state. Another innovation of this project is the use of molecular techniques to characterize the microbial community and experiments in situ of nitrogen assimilation to understand the role of the community in the metabolism of this nutrient in subtropical aquatic environment. The spatio-temporal heterogeneity and the diversity of the microbial community and its interactions with the abiotic components in these locations will be studied for the purpose of generating information that will deepen the understanding of the eutrophication process in subtropical reservoirs and develop management strategies to mitigate the adverse effects on water quality, ensuring their multiple uses and the maintenance of their environmental services. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MORAES, MUNIQUE DE ALMEIDA BISPO; RODRIGUES, RAPHAELLA DE ABREU MAGALHAES; PODDUTURI, RAJU; JORGENSEN, NIELS OLE GERSLEV; CALIJURI, MARIA DO CARMO. Prediction of Cyanotoxin Episodes in Freshwater: A Case Study on Microcystin and Saxitoxin in the Lobo Reservoir, Sao Paulo State, Brazil. ENVIRONMENTS, v. 10, n. 8, p. 16-pg., 2023-08-01. (16/09405-1, 18/00394-2, 15/21191-4)

MORAES, MUNIQUE A. B.; RODRIGUES, RAPHAELLA A. M.; SCHLUTER, LOUISE; PODDUTURI, RAJU; JORGENSEN, NIELS O. G.; CALIJURI, MARIA C.. Influence of Environmental Factors on Occurrence of Cyanobacteria and Abundance of Saxitoxin-Producing Cyanobacteria in a Subtropical Drinking Water Reservoir in Brazil. WATER, v. 13, n. 12, JUN 2021. (15/21191-4, 16/09405-1, 18/00394-2)