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Microplastics in the Ottawa River: Numerical Modeling for Identifying Accumulation Zones
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Researchers used numerical modeling to map where microplastics accumulate along 400 kilometers of the Ottawa River, identifying specific hotspot zones driven by hydrodynamic processes. Pinpointing accumulation zones in major river systems helps prioritize cleanup efforts and better understand how microplastics move through freshwater toward drinking water intakes and ocean environments.
The recent research on the widespread presence of microplastics in the Ottawa River has underscored the potential environmental implications for this vital aquatic ecosystem. In this study, we conducted a numerical analysis of microplastic transport in a 400-km...
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Numerical Modeling of Microplastics Fate and Transport in a Stretch of the Fraser River
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Researchers used numerical modeling to simulate how microplastics move and accumulate within a stretch of the Fraser River, providing predictions of particle fate and transport that can inform where microplastics concentrate and how rivers function as conduits delivering plastic pollution from land to sea.
Unravelling Microplastic Transport in the Gulf of St. Lawrence: Insights from Advanced Hydrodynamic Modelling Using TELEMAC-3D
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Researchers used advanced 3D hydrodynamic modeling with TELEMAC-3D to simulate microplastic transport through the stratified tidal waters of the Gulf of St. Lawrence, revealing how currents, density gradients, and tidal cycles distribute particles across this vast marine system. The modeling outputs provide a predictive framework for identifying microplastic accumulation zones and informing monitoring priorities in Canada's largest estuarine environment.
Modeling the Fate of Nano- and Microplastics in freshwater systems
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Researchers developed a spatially and temporally explicit fate model for nano-, micro-, and millimeter-scale polymer particles in the river Dommel, finding that particle size, biofilm formation, and water turbulence are the dominant controls on retention and downstream transport, with larger particles and biofouled surfaces settling preferentially in specific riverine hot spots.
Numerical Simulation of Microplastics Transport in Saguenay Fjord Using Ray Tracing Particle Tracking Model
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This study applied a ray-tracing particle tracking model to numerically simulate how microplastics of varying sizes and densities are transported through Saguenay Fjord, a deep stratified fjord system in Quebec. Accurate transport simulations are essential for predicting where microplastics accumulate in aquatic food webs and ultimately reach the fish and seafood that humans consume.
Multi-Type Microplastic Migration Model Driven by River Hydrodynamic Conditions
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Scientists built a model that predicts how different types of microplastics move through rivers, some float and travel quickly downstream, others sink to the riverbed, and some stay suspended in the water depending on their size, shape, and material. This matters because most of the microplastics found (over 70%) were smaller than half a millimeter, tiny enough to be easily ingested by fish and potentially end up in our drinking water or food supply, so understanding where they travel and accumulate can help target cleanup efforts and pollution control where they're needed most.
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.