| Full text | |
| Author(s): |
Lopez-Doval, Julio C.
;
Meirelles, Sergio Tadeu
;
Cardoso-Silva, Sheila
;
Moschini-Carlos, Viviane
;
Pompeo, Marcelo
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Science of The Total Environment; v. 540, p. 11-pg., 2016-01-01. |
| Abstract | |
The Melsopolitan Region of Sao Paulo (MRSP) is located in the Brazilian State of Sao Paulo and reservoirs in this region are vital for water supply and energy production. Changes in economic, social, and demographic trends produced pollution of water bodies, decreasing water quality for human uses and affecting freshwater populations. The presence of emerging pollutants, classical priority substances, nutrient excess and the interaction with tropical-climate conditions require periodic reviews of water policies and monitoring programs in order to detect and manage these threats in a global change scenario. The objective of this work is to determine whether the monitoring program of the Sao Paulo's Environmental Agency, is sufficient to explain the toxicological and biological responses observed in organisms in reservoirs of the MRSP, and whether it can identify the possible agents causing these responses. For that, we used publicly available data on water quality compiled by this agency in their routine monitoring program. A general overview of these data and a chemometric approach to analyze the responses of biotic indexes and toxicological bioassays, as a function of the physical and chemical parameters monitored, were performed. Data compiled showed temporal and geographical information gaps on variables measured. Toxicological responses have been observed in the reservoirs of the MRSP, together with a high incidence of impairments of the zooplankton community. This demonstrates the presence of stressors that affect the viability of organisms and populations. The statistical approach showed that the data compiled by the environmental agency are insufficient to identify and explain the factors causing the observed ecotoxicological responses and impairments in the zooplankton community, and are therefore insufficient to identify clear cause-effect relationships. Stressors different from those analyzed could be responsible for the observed responses. (C) 2015 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 13/08272-0 - Trophic descriptors of the reservoirs in the Cantareira System (São Paulo, SP) |
| Grantee: | Viviane Moschini Carlos |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 12/16420-6 - Ecotoxicological characterization of the Guarapiranga reservoir: study of possible adverse effects of heavy metals, pesticides and environmental stressors on aquatic fauna |
| Grantee: | Julio César López Doval |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 12/11890-4 - Contamination for heavy metal in the sediment of reservoirs of the Sistema Cantareira (São Paulo State): perspective or reality? |
| Grantee: | Marcelo Luiz Martins Pompêo |
| Support Opportunities: | Regular Research Grants |