Publications by authors named "Marcelle C Cordeiro"
Sci Total Environ
December 2019
Article Synopsis
- * A study was conducted to assess the short-term impacts of the ore tailings on marine biodiversity, particularly on the recently discovered reefs in Abrolhos Bank, utilizing remote sensing data and water samples.
- * Although the isotopic analysis confirmed the presence of the tailings in the reef area, there was no evident negative impact on the coral communities, establishing a baseline for future assessments of coral reef health.
Sci Total Environ
February 2020
Article Synopsis
- - On January 25, 2019, the Córrego do Feijão tailing dam in Brumadinho, Brazil, collapsed, resulting in over 250 fatalities and releasing 12 million cubic meters of waste into the Paraopeba River.
- - After the disaster, water turbidity was incredibly high at 3000 NTU, and a significant increase in iron-tolerant microbial colonies was noted downstream within a few months.
- - Ecotoxicological assessments revealed high mortality rates in zebrafish embryos, indicating environmental damage, but suggested that other pollution sources might also contribute to these effects, highlighting the need for ongoing environmental monitoring.
Sci Total Environ
March 2019
Article Synopsis
- The study investigates the aftermath of the Fundão tailings dam failure on the water quality of the Doce River by analyzing metagenomics and physicochemical data shortly after the disaster and again at 6 and 10 months later.
- Immediately following the dam failure, water quality deteriorated significantly, with extremely high levels of suspended particulate matter, turbidity, and dissolved metals, while dissolved oxygen fell below legal standards in some areas.
- Six months post-disaster, water quality improved, aligning with Brazilian guidelines, but notable changes occurred in microbial communities, showing increased diversity and alterations in metabolic functions related to iron and nitrogen cycling.
