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61,005 resultsShowing papers similar to Quantifying fluxes of microplastics from the magdalena river into the caribbean sea
ClearQuantifying fluxes of microplastics from the magdalena river into the caribbean sea
This study quantified how many microplastics the Magdalena River — Colombia's largest river — carries into the Caribbean Sea, establishing a baseline for understanding South America's contribution to marine plastic pollution. River-to-ocean flux measurements like this are essential for building accurate global models of how plastic pollution accumulates in marine ecosystems.
Microplastics of surface waters of Colombian Caribbean
Researchers collected and characterized microplastics from the surface waters of two Colombian Caribbean sectors influenced by major rivers, sampling across dry and rainy seasons and also analyzing the microbial communities living on the plastic surfaces. The study provides baseline pollution data for a region where microplastic research has been minimal, while the metagenomic analysis of plastisphere microbes adds ecological context. Understanding which microbes colonize plastic in tropical Caribbean waters is relevant to assessing whether those particles serve as vectors for harmful or antibiotic-resistant bacteria.
Abundance, distribution, and characteristics of microplastics in coastal surface waters of the Colombian Caribbean and Pacific
This study documented microplastic abundance, distribution, and characteristics across Colombian Caribbean and Pacific coastal surface waters during the 2017 rainy season, finding concentrations up to 8.96 items per square meter and establishing the first national baseline for microplastic pollution in Colombian coastal waters.
Coastal populations and river discharges as sources of microplastic pollution of the Ciénaga Grande de Santa Marta, Colombian Caribbean
Researchers investigated microplastic contamination in surface waters of the Ciénaga Grande de Santa Marta coastal lagoon in Colombia and assessed the contribution of coastal populations and river discharges as pollution sources. MPs were detected throughout this internationally protected Ramsar site, with proximity to populated areas and river inputs driving spatial variation in contamination.
Quantifying microplastic fluvial flux from a coastal watershed—A microplastic rating curve approach
Researchers quantified the flux of microplastics transported by rivers to the coast from a single watershed, providing a mass balance for how much plastic a defined catchment exports. Such flux estimates are essential building blocks for calculating global land-to-ocean plastic budgets.
Estudio de microplásticos en muestras de agua y sedimentos de un río urbano del suroccidente de Colombia
A study of a Colombian urban river found microplastics in all water and sediment samples, with concentrations reaching 4,186 particles per liter in water and 62,763 per kilogram in sediments, and human activity along the riverbank directly correlated with contamination levels. This adds to evidence that urban rivers act as major conduits channeling microplastics from cities into the ocean.
Rural village as a source of microplastic pollution in a riverine and marine ecosystem of the southern Venezuelan Caribbean
Researchers quantified microplastic pollution in a rural Venezuelan Caribbean coastal community (Chichiriviche de la Costa) and its adjacent riverine and marine environment across dry and rainy seasons. MPs were detected in river water and sediment, marine water, sediment, fish, and sponges, demonstrating that even low-population rural settlements contribute meaningful MP loading to downstream ecosystems.
Invisible Footprints: Exploring Microplastic Pollution in the Colombian Caribbean Sea
Researchers documented microplastic contamination throughout the surface and mid-waters of the Colombian Caribbean, detecting plastic particles in every single water sample collected across 16 stations in two departments. Concentrations were higher near the coast and in areas with strong river influence, with fibers and fragments of PET and polypropylene most common, and several rare high-risk polymers also detected. As one of the first systematic studies of its kind in this region, the work establishes baseline data for a relatively understudied stretch of the Caribbean and identifies urban river inputs as a key contamination driver.
Microplastics in tropical Andean rivers: A perspective from a highly populated Ecuadorian basin without wastewater treatment
Researchers measured microplastic concentrations in a highly populated Ecuadorian river basin that lacks wastewater treatment, finding contamination throughout the system and demonstrating that rivers in low-income tropical countries with poor infrastructure are major conduits for microplastics.
Spatio-temporal dynamics and flux of microplastics in the lower Ganges-Brahmaputra-Meghna River system and estuary
Researchers examined the spatial and seasonal dynamics of microplastics across the lower Ganges-Brahmaputra-Meghna River system and estuary, one of the world's largest river systems and a major contributor to global ocean plastic inputs. The study quantified microplastic flux and found significant spatio-temporal variation driven by river discharge, monsoon seasonality, and anthropogenic land use across the catchment.
Microplastics in distal sediments from the mouth of the Amazon River
Researchers conducted a preliminary assessment of microplastic distribution in distal sediments from the mouth of the Amazon River, motivated by prior evidence that the Amazon plume is the largest source of organic plastic additives in the tropical North Atlantic region.
Point-source microplastic input to the river and coastal zone via wastewater treatment facilities: a case study from a tropical mega-city
Point-source inputs of microplastics from a specific industrial or municipal source were quantified in both a river and the adjacent coastal zone. The study links land-based pollution sources to downstream and coastal microplastic concentrations, supporting targeted source-control interventions.
Relative contributions of different local sources to riverborne microplastic in a mixed landuse area within a tropical catchment
Researchers quantified the relative contributions of different land-use sources to riverborne microplastics in a tropical catchment, providing data to help prioritize pollution reduction measures for protecting human and ecological health.
Microplastics in Freshwater River in Rio de Janeiro and Its Role as a Source of Microplastic Pollution in Guanabara Bay, SE Brazil
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.
The first report on the source-to-sink characterization of microplastic pollution from a riverine environment in tropical India
This first source-to-sink study of microplastic pollution in a tropical Indian river system tracked microplastics from urban sources through the river to estuarine and coastal deposition zones, characterizing polymer types and morphologies at each stage.
Microplastics of surface waters of Colombian Caribbean
This is a duplicate entry for the Colombian Caribbean surface water microplastics study (same as ID 1858), covering microplastic characterization and plastisphere microbial communities in two river-influenced Caribbean sectors during dry and rainy seasons. Duplicate entry; the study provides important baseline contamination data and microbial ecology context for a poorly studied tropical region.
Identification, Abundance, and Distribution of Microplastics in Surface Water Collected from Luruaco Lake, Low Basin Magdalena River, Colombia
Researchers documented microplastic contamination in Luruaco Lake, Colombia, for the first time, assessing the identification, abundance, and seasonal distribution of microplastic particles in surface waters of this important Magdalena River basin lake.
Cuantificación de la presencia de microplásticos en la cuenca alta del río Guayllabamba
This study quantified microplastics in the upper basin of the Guayllabamba River in Ecuador, finding contamination at multiple sites. The results add to evidence that South American rivers far from major industrial centers are already contaminated with microplastics, which eventually flow toward coastal and marine environments.
Microplastics in distal sediments from the mouth of the Amazon River
Researchers conducted a preliminary assessment of microplastic distribution in distal marine sediments near the mouth of the Amazon River, examining how the Amazon plume — a major source of plastic additives in the tropical North Atlantic — contributes to regional microplastic deposition patterns.
How flooding rivers deliver plastic to the ocean: A case study of microplastic and mesoplastic load–discharge relationships
A field study tracked how a flooding river delivered plastic debris to the ocean, mapping the rapid transport of macroplastics and microplastics during a high-flow event. The research shows that floods are major episodic drivers of plastic export from land to sea, contributing disproportionately to ocean plastic budgets.
Riverine Microplastic Fluxes
Researchers conducted microplastic monitoring campaigns on riverine systems draining coastal watersheds in Southern California, examining concentrations, characteristics, and flux of microplastics to improve monitoring plan design and identify key methodological considerations for quantifying riverine MP transport to the ocean.
Presence of microplastics: Impacts in a marine-coastal environment of the Colombian Caribbean
Researchers surveyed microplastic presence in a marine-coastal environment in Colombia, characterizing particle abundance, polymer types, and size distribution in water and sediment samples. Fibres dominated the samples, with polyester and nylon the most common polymers, pointing to synthetic textile washing as a key local source.
Impacts of marine debris contamination in the mangrove ecosystem of the Ciénaga Grande de Santa Marta, Colombian Caribbean
This study assessed the impacts of marine debris, including plastic, on the mangrove ecosystem of Colombia's Ciénaga Grande de Santa Marta, finding widespread contamination with negative effects on both ecology and local communities. Mangroves are important coastal filters but are being overwhelmed by plastic inputs.
Microplastics and the Amazon: from the Rivers to the Estuary
This review described the main routes of microplastic input into Amazonian rivers and how local environmental characteristics affect the transformation and transport of plastics through the Amazon basin to the estuary.