Publications by authors named "Cesar Americo Almeida"
Article Synopsis
- Water policy in semi-arid regions has often prioritized reservoir construction without evaluating the ecological impacts on local ecosystems, particularly in high-gradient streams of the Dry Chaco Ecoregion in South America.
- Research studied both unregulated and regulated watercourses, revealing significant increases in water contaminants and detrimental effects on habitat conditions and macroinvertebrate communities in regulated areas.
- Findings suggest that improving ecological integrity in regulated streams requires habitat restoration, emphasizing the need for better management of water resources amid changing climate conditions.
Article Synopsis
- The Conlara River in San Luis Province faces pollution and habitat fragmentation due to urban and agricultural development.
- This study assesses the river's water quality by examining metals, pesticides, and physicochemical parameters to evaluate their impacts on aquatic life.
- Results indicate significant contamination levels exceeding Argentinian legislation, with various environmental stressors affecting the health of native species across different sampling sites and seasonal conditions.
In recent years, concerns have increased about the adverse effects on health and the environment of polybrominated diphenyl ethers (PBDEs), especially BDE-209, the most widely PBDE used globally. These pollutants derive from e-waste and present different adverse effects on biota. In this work, a toxicological study on mosquitofish (Gambusia affinis) using BDE-209 (2,2',3,3',4,4',5,'5',6,6'-decabromodiphenyl ether) was carried out.
View Article and Find Full Text PDFThe aim of this study was to assess the impact of urban and industrial areas on an urban river through a comprehensive analysis of water and sediments. Six different sites along the San Luis River, Argentina, were characterized by measuring 12 physical-chemical parameters and nine heavy metals according to standard protocols. Metal pollution in sediment samples was evaluated with several indices.
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