We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
How natural and anthropogenic factors should drive microplastic behavior and fate: The scenario of Brazilian urban freshwater
AI summary Read the abstract
This review examines the factors driving microplastic contamination in Brazilian freshwater systems, including the country's massive plastic production and limited recycling infrastructure. Researchers highlight that more than half of post-consumer plastic packaging in Brazil goes unmonitored, and most microplastic research has focused on marine environments while freshwater data remains scarce. The study calls for more systematic monitoring of Brazilian rivers and lakes, especially given the country's continental-scale waterways and diverse ecosystems.
Brazil maintains its position at the top of the global ranking of plastic producers, yet recycling efforts have been incipient. Recent data reveals an annual production of approximately 14 million tons of plastic waste, not accounting for the surge in the usage of plastic masks and related materials due to the COVID-19 pandemic. However, what remains largely unreported is that over half of post-consumer plastic packaging in Brazil is managed without any monitoring, and it remains unclear how this will contribute to the occurrence of plastic waste and microplastics in Brazilian freshwaters. This scenario requires the consideration of several other crucial factors. Studies have been carried out mainly in marine and estuarine waters, while data on freshwaters are lacking. Brazil has continental dimensions and the highest water availability on the planet, yet the demand for water is greatest in regions with medium to low supply. Many densely populated Brazilian urban areas face chronic flood problems, possess inadequate levels of wastewater treatment, and display inadequate solid waste management practices. Consequently, urban freshwater with tropical characteristics in Brazil presents an intriguing scenario and is complementary to the most commonly studied marine environments. In this study, we explore the nuances of pollution in Brazilian urban freshwater and discuss how various parameters, such as organic matter, suspended solids, temperature, and pH, among others, influence the behavior of microplastics and their interactions with organic and inorganic contaminants. Furthermore, we address how microplastic conditions, such as biofouling, the type of plastic, or degradation level, may impact their behavior. By analyzing how these conditions change, we propose priority themes for investigating the occurrence of microplastics in Brazilian urban freshwater systems under different degrees of human impact. Ultimately, this study aims to establish a network dedicated to standardized monitoring of microplastic pollution in Brazilian urban freshwaters.
More Papers Like This
Effect of urbanization and water quality on microplastic distribution in Conceição Lagoon watershed, Brazil
AI summary Read the abstract
Researchers assessed microplastic distribution across urbanized and non-urbanized tributaries of Conceicao Lagoon watershed in Brazil. The study found that while urbanization significantly affected water quality parameters, it did not always correspond to higher microplastic concentrations. Evidence indicates that microplastic pollution in freshwater systems is influenced by multiple factors beyond urbanization alone, complicating simple predictions about contamination patterns.
Contamination by plastics and microplastics: (re)knowing the lived reality.
AI summary Read the abstract
This Brazilian literature review examines the environmental impact of plastics and microplastics across different pollution scenarios, discussing the history of plastic production and consumption, relevant environmental legislation, and the importance of recycling in addressing plastic contamination.
Plastic Interactions with Brazilian Aquatic Organisms: A Systematic Review of Research Trends and Knowledge Gaps
AI summary Read the abstract
This systematic review summarizes research on how plastic pollution interacts with aquatic organisms across Brazil's rivers, coasts, and oceans. It identifies major knowledge gaps, including limited studies on microplastic effects in freshwater species and a lack of standardized methods. Understanding these interactions matters because contaminated fish and shellfish can carry microplastics into the human food chain.
Microplastics in Freshwater River in Rio de Janeiro and Its Role as a Source of Microplastic Pollution in Guanabara Bay, SE Brazil
AI summary Read the abstract
Researchers found widespread microplastic contamination in three rivers flowing into Guanabara Bay, Brazil, with an average of 3,651 particles per cubic meter dominated by fibers, identifying these freshwater systems as major sources of coastal microplastic pollution.
Effects of environmental and anthropogenic factors on the distribution and abundance of microplastics in freshwater ecosystems
AI summary Read the abstract
Researchers reviewed nearly 6,500 articles to identify the environmental and human factors driving microplastic distribution in freshwater ecosystems worldwide. They found that both natural factors like water flow and temperature, and human activities like urbanization and agriculture, significantly influence where microplastics accumulate in rivers and lakes. The study provides a framework for predicting microplastic pollution hotspots and prioritizing monitoring efforts in freshwater systems.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.