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61,005 resultsShowing papers similar to Adapting Coastal Collection Methods for River Assessment to Increase Data on Global Plastic Pollution: Examples From India and Indonesia
ClearA Methodology to Characterize Riverine Macroplastic Emission Into the Ocean
This paper presents a standardized methodology for measuring and characterizing macroplastic emissions from rivers into the ocean, addressing a major data gap in global plastic budget estimates. Consistent measurement frameworks are essential for understanding how much plastic enters the ocean from land-based sources via rivers.
Plastic Pollution from River to Ocean: A Comprehensive Review in Indian Scenario
This review maps how plastic waste travels from India's rivers to the ocean, highlighting that rivers act as conveyor belts transporting microplastics and nanoplastics from inland sources to coastal and marine environments. Given India's large population and extensive river network, the authors argue that current waste management policies have dangerously underestimated the riverine plastic pollution pathway.
The impact of improper solid waste management to plastic pollution in Indonesian coast and marine environment
Indonesia's plastic pollution problem in coastal and marine environments is largely driven by improper solid waste management on land, with rivers carrying significant plastic loads to the sea. The study emphasizes that improving terrestrial waste collection and disposal infrastructure is essential for reducing Indonesia's substantial contribution to ocean plastic pollution.
A comparative analysis of global models for riverine plastic input to the ocean
Researchers compared existing global models estimating riverine plastic input to the ocean, identifying key sources of divergence including the number of rivers modelled, item-to-mass conversion factors, and extrapolation methods from microplastic to macroplastic estimates. The comparative analysis highlighted that modelling choices lead to substantial uncertainty in global plastic flux estimates, underscoring the need for a standardised science-policy framework to evaluate plastic pollution mitigation.
River plastic transport and storage budget.
This global synthesis estimated the plastic transport and storage budget for rivers by measuring plastic in the water surface, water column, riverbanks, and floodplains — finding that far more plastic is stored within rivers than is transported to the ocean. The study challenges the assumption that rivers are primarily conduits and highlights them as major long-term plastic reservoirs.
Microplastics in Freshwater Environments – With Special Focus on the Indian Scenario
This review examines microplastic pollution in freshwater environments globally with a focus on the Indian context, finding that despite India being one of the world's largest contributors to marine plastic pollution, freshwater microplastic research in India remains almost entirely absent, and calling for systematic river catchment monitoring to quantify land-to-ocean plastic fluxes.
Estimation of macroplastic yield from river basin to coastal area: A case study of the Klang River, Malaysia
Researchers studied macroplastic distribution along a 20-kilometer stretch of the highly polluted Klang River in Malaysia and developed a method to estimate total plastic yield from the river basin to the coast. They found 240 items of weathered macroplastics and characterized their composition and degradation patterns. The study provides a practical protocol for quantifying how much plastic pollution flows from rivers into coastal marine environments.
A multidimensional approach for microplastics monitoring in two major tropical river basins, Malaysia
Researchers conducted a multidimensional assessment of microplastic distribution in surface waters of two major Malaysian river basins, providing much-needed field data on microplastic emissions from Asian rivers known to be major contributors to ocean pollution.
Evaluation of riverine macro- and mesoplastic monitoring approaches.
This review evaluated and compared existing monitoring approaches for riverine macro- and mesoplastics, identifying key methodological inconsistencies that limit cross-study comparisons and calling for standardization to improve understanding of plastic transport and accumulation in freshwater river systems.
Riverine Plastic Pollution: Field Sampling Protocol and Implementation in U.S. Rivers
This paper presents a standardized field sampling protocol for measuring plastic pollution in U.S. rivers. Consistent methodology is essential for comparing data across studies and is designed to capture both surface and submerged plastics including microplastics in riverine systems.
A baseline study of macro, meso and micro litter in the Belize River basin, from catchment to coast
Researchers conducted a baseline survey of macro, meso, and micro litter throughout the Belize River basin from inland catchments to the coast, documenting plastic as the dominant litter type and identifying rivers as key conduits transporting terrestrial plastic waste to coastal waters.
An evaluation of the River-OSPAR method for quantifying macrolitter on Dutch riverbanks
This study evaluated the River-OSPAR method — a standardized litter monitoring protocol — for quantifying debris on Dutch riverbanks. Accurate monitoring methods are necessary to track plastic litter reduction efforts in river systems that ultimately transport litter to the ocean.
From pollution to solutions: Insights into the sources, transport and management of plastic debris in pristine and urban rivers
This review examines how river systems receive and transport plastic debris -- including both macroplastics and microplastics -- from land sources to the ocean, synthesizing evidence on pollution sources, fate, and management strategies across pristine and urban rivers.
Baseline Study on Microplastics in Indian Rivers under Different Anthropogenic Influences
Researchers collected microplastic samples from Indian rivers under different levels of anthropogenic influence and found MPs in all sites, with concentrations correlating with population density and industrial activity, providing one of the first systematic field datasets for major Indian river systems.
Knowledge about Microplastic in Mediterranean Tributary River Ecosystems: Lack of Data and Research Needs on Such a Crucial Marine Pollution Source
This review surveys the limited literature on microplastic pollution in freshwater rivers feeding the Mediterranean Sea, finding major gaps in data and inconsistent methods. The authors call for standardized monitoring protocols to better understand how rivers transport microplastics from land to the ocean.
Developing Realistic Models for Assessing Marine Plastic Pollution in Semi-Enclosed Seas
Researchers developed realistic modeling approaches for assessing marine plastic pollution in semi-enclosed seas, accounting for plastic transport from land-based sources via rivers and inland pathways to better predict accumulation patterns.
A comprehensive review on assessment of plastic debris in aquatic environment and its prevalence in fishes and other aquatic animals in India
This review compiled Indian studies on plastic debris in aquatic environments and aquatic organisms, documenting widespread contamination in rivers, coastal waters, and fisheries, and identifying the lack of standardized methods and long-term monitoring as major obstacles to understanding the full extent of the problem.
Global plastic export by rivers: large differences in trends between microplastics and macroplastics
A global analysis modeled river export of both micro- and macroplastics to the sea, finding large divergences in trends between the two size classes and highlighting that models focused solely on macroplastics significantly underestimate total riverine plastic inputs to the ocean.
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.
Controlling Factors of Microplastic Riverine Flux and Implications for Reliable Monitoring Strategy
This review examines the controlling factors that determine microplastic flux from rivers to the sea, identifying hydrology, land use, river morphology, and sampling methodology as key variables, and arguing for standardized monitoring approaches to enable reliable riverine flux estimates.
Case studies of macro- and microplastics pollution in coastal waters and rivers: Is there a solution with new removal technologies and policy actions?
This review examined case studies of macro- and microplastic pollution in coastal waters and rivers, discussing the current state of contamination and evaluating emerging removal technologies and policy interventions. The authors assessed whether new technological solutions and regulatory actions could realistically address the global scale of plastic pollution.
Modelling global river export of microplastics to the marine environment: Sources and future trends
Researchers developed the GREMiS model to estimate global river export of microplastics to the ocean, projecting that annual marine inputs will increase significantly under business-as-usual plastic production scenarios.
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.
Freshwater plastic pollution: Recognizing research biases and identifying knowledge gaps
Researchers conducted a bibliometric review of freshwater plastic pollution research and identified major gaps: data from the most polluted Asian rivers is severely underrepresented, submerged macroplastics are almost entirely unstudied, and studies of plastic impacts on freshwater fauna lag far behind comparable marine research — limiting the ability to accurately estimate river-to-ocean plastic flux.