Temporal variation of AVS/SEM and integrated assessment of sediment from Rio Grande reservoir (Billings Complex - SP)

• Grant number: 06/00739-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): July 01, 2006
• Effective date (End): September 14, 2008
• Field of knowledge: Biological Sciences - Ecology - Ecosystems Ecology
• Principal Investigator: Marcelo Luiz Martins Pompêo
• Grantee: Carolina Fiorillo Mariani
• Host Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Rio Grande reservoir, Billings Complex, is a strategical water reservoir to São Paulo Metropolitan Region, because it serves as recreation place, water supply source, and sewage receptor. Sediments are important compartments for limnic ecosystems, because they act either as source and or sink of chemicals. In anoxic environments, sulfide present in sediments may be responsible for metal ion bioavailability control; the aqueous forms are the metal specie that express toxicity in living organisms, while their maintance as an insoluble metal sulfide keeps them in a non-bioavailable form. The metal ion content may be linked to biotests data, in order to yield information about environmental degradation and local biota intoxication due to chemical contamination, as praised by the Sediment Quality Triad (SQT) approach. At the present work, Acid Volatile Sulfide (AVS) and Simultaneously Extracted Metals (SEM) Cd, Cu, Ni, Pb, Hg and Zn will be measured. Seasonal evaluations of AVS and SEM will be made in two different temporal scales. Biotests will be made in Heidelberg University’s laboratory in order to assess cell and genome damage. This way, we expect to compose an integrated sediment assessment from Rio Grande reservoir and contribute to sediment dynamic knowledge. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

MARIANI, Carolina Fiorillo. Temporal variation of AVS/SEM and integrated assessment of sediment from Rio Grande reservoir (Billings Complex - SP). 2010. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Biociências (IBIOC/SB) São Paulo.