Water hyacinths as riverine plastic pollution carriers DOI Creative Commons
Tim van Emmerik,

Tim Willem Janssen,

Tianlong Jia

et al.

Published: Sept. 2, 2024

Abstract. Plastic pollution is an emerging entity threatening freshwater and marine ecosystems. Rivers play important role in the transport retention of plastic from land to sea. Tropical rivers are among most polluted globally, assumed emit substantial amounts into environment. Concurrently, tropical invaded by water hyacinths, a free-floating vegetation species native Amazon. Water hyacinths grow rapidly, forming dense mats plants other material including pollution. With only limited anecdotal scientific evidence plastic-water hyacinth trapping, its full spatial extent along river systems remain unknown. Here, we demonstrate consistent as carriers river. Over 69 k items 57 patches were identified 42 km downstream section Saigon river, Vietnam. More than 73 % all floating plastics carried ranging between 58–82 per specific location. The highest trapping ratio was found at upstream locations. Although covered 1.3 total surface, concentration 197 times higher open water. Most downstream, lowest coverage (0.2 %) corresponded largest difference surface (factor 781). Previous work demonstrated effective individual sites. show that aggregates consistently occur scale. We quantified five locations Vietnam, using drones fixed cameras, combination with custom-trained YOLOv8 deep learning model. our paper, support theory effectively concentrate carry rivers. Further on interactions needed better understand transport, fate impact world's Our results also idea monitoring space well-detectable proxy. Finally, suggests current removal practices may be optimized recover

Language: Английский

The processes and transport fluxes of land-based macroplastics and microplastics entering the ocean via rivers DOI
Teng Wang, Hong Liao, Huahong Shi

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133623 - 133623

Published: Jan. 26, 2024

Language: Английский

Citations

28
Advancing river monitoring using image-based techniques: challenges and opportunities DOI Creative Commons
Salvatore Manfreda, Domenico Miglino, Khim Cathleen Saddi

et al.

Hydrological Sciences Journal, Journal Year: 2024, Volume and Issue: 69(6), P. 657 - 677

Published: March 21, 2024

Enhanced and effective hydrological monitoring plays a crucial role in understanding water-related processes rapidly changing world. Within this context, image-based river has shown to significantly enhance data collection, improve analysis accuracy, support timely decision-making. The integration of remote proximal sensing technologies, with citizen science, artificial intelligence may revolutionize practices. Therefore, it is quantify the quality current research ongoing initiatives envision potential trajectories for activities within specific field. evolution strategies progressing multiple directions that should converge build critical mass around relevant challenges meet need innovative solutions overcome limitations traditional approaches. present study reviews showcases good practices enhanced different applications, reflecting strengths new

Language: Английский

Citations

19
Hydrological and hydraulic drivers of microplastics in a rural river sourced from the UK’s largest opencast coal mine DOI Creative Commons
James Lofty, Guglielmo Sonnino Sorisio, Liam Kelleher

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: 368, P. 125722 - 125722

Published: Jan. 17, 2025

Microplastics (MPs) are ubiquitous in river and freshwater ecosystems. However, the hydraulic hydrological mechanisms that regulate activation emissions of MPs from both land surface subsurface into rivers not well understood. This study aims to quantify instream MP concentration load a remote headwater catchment (Taff Bargoed, Wales UK), which drains UK's largest opencast coal mine (Ffos-y-fran), over two-year period. Small fibers (< 1 mm) composed acrylic polyester dominated sampled Taff while less commonly observed fragments were mostly polysulfone. River concentrations ranged 0.27 - 28.87 MP/m³ (average: 14.6 ± 10.31 MP/m³), one order magnitude 0.08 3.04 MP/s (average:1.42 0.81 MP/s). Statistically significant relationships found between concentration, number dry weather hours discharge, indicated rainfall-runoff induced, source limited, dilution effects on concentration. A negligible relationship discharge was observed, suggests variability independent flow conditions, hours, Bargoed. Significant positive total suspended solids also indicating this may provide useful proxy for estimating variation No longitudinal 2 km reach where differences drainage area negligible, however, increased by factor 4 downstream an inflowing tributary, sourced Ffos-y-fran mine. Overall, results evidence mining activities can contribute rural rivers, with their contribution being regulated processes catchment.

Language: Английский

Citations

2
A particle tracking model approach to determine the dispersal of riverine plastic debris released into the Indian Ocean DOI Creative Commons

Tahira Irfan,

Atsuhiko Isobe,

Hiromi Matsuura

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 199, P. 115985 - 115985

Published: Jan. 6, 2024

Although the Indian Ocean receives a large amount of land-based plastic waste, studies on pathways riverine debris are limited to date. Therefore, particle tracking model that included ocean surface currents, horizontal diffusion, Stokes drift, windage, and beaching/re-drifting processes was developed reproduce behavior in Ocean. The modeled particles were released domain based database. maximum abundance beached occurred during southwesterly monsoon season, particularly Bay Bengal. from rivers trapped northern unless both drift windage excluded transportation velocity. These results suggest until it fragmented into less buoyant small microplastics drifting subsurface layer, free at increasing depths.

Language: Английский

Citations

7
The impact of floods on plastic pollution DOI Creative Commons
Tim van Emmerik

Global Sustainability, Journal Year: 2024, Volume and Issue: 7

Published: Jan. 1, 2024

Abstract Non-Technical Summary Plastic harms ecosystem health and human livelihood on land, in rivers, the sea. To prevent reduce plastic pollution, we must know how plastics move through environment. Extreme events, such as floods, bring large amounts of into rivers around world. This article summarizes different flood types (excessive rainfall, high river flow, or floods from sea) flush deposit this impacts Furthermore, paper also discusses improved resilience to is important pollution. Technical pollution ubiquitous environment threatens terrestrial, freshwater, marine ecosystems. Reducing requires a thorough understanding its sources, sinks, abundance, impact. The transport retention dynamics are however complex, assumed be driven by natural factors, anthropogenic item characteristics. Current literature shows diverging correlations between discharge, wind speed, transport. However, have been consistently demonstrated impact dispersal. presents synthesis For each specific type (fluvial, pluvial, coastal, flash floods), identified driving mechanisms available literature. introduces plastic-flood nexus concept, which negative feedback loop (mobilizing plastics), (increasing risk blockages). Moreover, flood-driven was assessed, it argued that increasing reduces provides perspective importance global Increasing breaking crucial steps toward reducing environmental Social Media Floods transport, can reduced

Language: Английский

Citations

6
Rethinking plastic entrapment: Misconceptions and implications for ecosystem services in coastal habitats DOI

Nelson Rangel-Buitrago,

Daniel González‐Fernández, Omar Defeo

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 205, P. 116665 - 116665

Published: July 8, 2024

Language: Английский

Citations

6
Dune plants as a sink for beach litter: The species-specific role and edge effect on litter entrapment by plants DOI Creative Commons
Luca Gallitelli, Martina D’Agostino, Corrado Battisti

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 904, P. 166756 - 166756

Published: Sept. 1, 2023

Anthropogenic litter accumulates along coasts worldwide. In addition to the flowing load, wind, sea currents, geomorphology and vegetation determine distribution of trapped on sandy coasts. Although some studies highlighted role dune plants in trapping marine litter, little is known about their efficiency as sinks small-scale spatial across area. Here, we explore these gaps by analysing six plant species widespread Mediterranean coastal habitats, namely Echinophora spinosa, Limbarda crithmoides, Anthemis maritima, Pancratium maritimum, Thinopyrum junceum, Salsola kali. The present study analyses for first time capture at a multi-species level, considering morphological structure. Data plastic accumulation were compared with unvegetated control plots located embryo-dune foredune belts. We found that dunal mainly entrapped macrolitter (> 0.5 cm). Particularly, E. L. A. maritima P. maritimum mostly accumulated embryo while T. junceum S. kali more Moreover, beach was blocked edge patches rather than core, highlighting 'Plant-edge effect'. As respectively could be used monitor recollect litter. this light, our findings provide further insight into dynamics, suppling useful information clean-up actions.

Language: Английский

Citations

16
Advancing plastic pollution hotspotting at the subnational level: Brazil as a case study in the Global South DOI

Melanie Vianna Alencar,

Bianca Gabani Gimenez, Camila Sasahara

et al.

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 194, P. 115382 - 115382

Published: Aug. 10, 2023

Language: Английский

Citations

15
Estimating plastic pollution in rivers through harmonized monitoring strategies DOI Creative Commons
Tim van Emmerik, Sabrina Kirschke, Louise Schreyers

et al.

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 196, P. 115503 - 115503

Published: Oct. 1, 2023

Plastics in rivers and lakes have direct local impact, may also reach the world's oceans. Monitoring river plastic pollution is therefore key to quantify, understand reduce plastics all aquatic ecosystems. The lack of harmonization between ongoing monitoring efforts compromises comparison combination available data. United Nations Environment Programme (UNEP) launched guidelines on freshwater monitoring, provide a starting point for practitioners scientists towards harmonized data collection, analysis, reporting. We developed five-step workflow support design effective strategies. was applied three (Rhine, Mekong Odaw) across relevant gradients, including geography, hydrology, levels. show that despite simplicity selected methods limited duration our approach provides crucial insights state very different basins globally.

Language: Английский

Citations

14
Microplastics on the Planet: Current Knowledge and Challenges DOI
Lian‐Jun Bao, Lei Mai, Liang‐Ying Liu

et al.

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(12), P. 1262 - 1271

Published: Nov. 25, 2024

Microplastic (MP) pollution has become a global issue, attracting attention from stakeholders around the globe. Knowledge of MPs been substantially advanced in recent years. Newly developed analytical technologies allow better characterization MPs, but characterizing nanosized plastic particles remains challenging. Transport debris land to oceans is key driver for marine pollution, and relative contributions riverine runoff atmospheric deposition must be further quantified. Another lingering issue whether can bioaccumulate biomagnify along food web, which demands investigations. Currently there no health risk assessment human exposure probably due lack reference threshold values. Hence, establishing values should long-term continuing task scientific community. Recent progress quantifying vertical settling deep brightened prospect finding "Missing Plastics", at least partially. Future efforts are urgently needed developing novel techniques, conducting additional laboratory field measurements, formulating robust models understand occurrence, fate, effects on planet.

Language: Английский

Citations

5