Scholarship 24/04610-2 - Ecossistemas costeiros, Estoque de carbono - BV FAPESP
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Carbon stocks and functional groups of soil organic matter in mangrove impacted by oil spill (Bertioga-SP)

Grant number: 24/04610-2
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Start date until: June 01, 2024
End date until: May 31, 2025
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal Investigator:Diego Barcellos
Grantee:Juliana Sedmak de Souza
Host Institution: Instituto de Ciências Ambientais, Químicas e Farmacêuticas (ICAQF). Universidade Federal de São Paulo (UNIFESP). Campus Diadema. Diadema , SP, Brazil

Abstract

Mangroves are vital coastal ecosystems due to their great importance both ecologically and economically. They serve as crucial carriers of organic matter and impact the cycle of nutrients, as well as storing significant amounts of carbon in soils, known as "blue carbon." As a result, mangroves play a fundamental role in mitigating climate change, protecting against natural disasters, and supporting food chains. However, there are concerns about mangrove regression due to human actions such as deforestation, sewage contamination, oil spills, among others. One of the biggest disasters recorded involved an oil spill from a pipeline at the Brazilian coast, in the Bertioga Canal in São Paulo (1983), impacting the mangrove forest, although few studies have been conducted on the soils in that area. In this regard, the current research aims to analyze the impact of these spills, especially regarding the carbon quantity and stocks in the mangrove soils. We will also determine the soil organic matter functional groups by using techniques such as Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetry (TGA). Soil samples will be collected in triplicate near the Iriri River, where the pipeline leak occurred (impacted area), and near Largo do Candinho, an area unaffected by the oil spill, and at various depths (0-15 cm, 15-30 cm, 30-50 cm, 50-100 cm, and 100-200 cm). The results will contribute to understanding the dimensions of oil contamination in coastal soil areas and will improve environmental management planning.

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