Estimating Plastic Pollution in Rivers Through Harmonized Monitoring Strategies DOI
Tim van Emmerik, Sabrina Kirschke, Louise Schreyers

et al.

Published: Jan. 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

Large-scale detection of marine debris in coastal areas with Sentinel-2 DOI Creative Commons
Marc Rußwurm,

Sushen Jilla Venkatesa,

Devis Tuia

et al.

iScience, Journal Year: 2023, Volume and Issue: 26(12), P. 108402 - 108402

Published: Nov. 8, 2023

Detecting and quantifying marine pollution macroplastics is an increasingly pressing ecological issue that directly impacts ecology human health. Here, remote sensing can provide reliable estimates of plastic by regularly monitoring detecting debris in coastal areas. In this work, we present a detector for built on deep segmentation model outputs probability at the pixel level. We train with combination annotated datasets evaluate it specifically selected test sites where highly probable detected debris. integrate data-centric artificial intelligence principles devising training strategy extensive sampling negative examples automated label refinement coarse hand labels. This yields learning achieves higher accuracies benchmark comparisons than existing detection models trained previous datasets.

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
Computing riverine inputs of macrolitter into the Central Tyrrhenian Sea (Western Mediterranean Sea) from the Tiber River during the 1st post-pandemic year DOI Creative Commons
Giulia Cesarini, Antonella Arcangeli, Massimiliano Scalici

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 965, P. 178669 - 178669

Published: Feb. 1, 2025

This study addresses the critical knowledge gap on riverine macroplastic inputs to marine litter, focusing changes in waste composition a post-pandemic context. While plastic pollution has been widely documented, data floating macrolitter from urban rivers remain limited. The first comprehensive, year-round assessment of at both branches Tiber River mouth were conducted, using harmonized RIMMEL approach dedicated android App. simultaneous monitoring conducted two sites (TIB2 and TIB3), recorded abundance, material composition, size common item types, revealing an estimated annual transport rate 9 × 105 items/year Mediterranean Sea. Specifically, was 104 ± 87 items/h density 1170 151 items/km2. litter exhibited seasonal variability, with highest peak observed autumn lowest summer. Findings reveal reduction <34 % total items, countered by rise single-use such as cups, bottles label lids stick cotton bud lollies, sanitary towel condom. COVID-19-related items face masks gloves also recorded. Over half under 10 cm, suggesting fragmentation before reaching sea. enhances understanding big European capital, providing dataset identify patterns track evolution waste.

Language: Английский

Citations

0
Catchment scale assessment of macroplastic pollution in the Odaw river, Ghana DOI Creative Commons
Rose Boahemaa Pinto, Linda Bogerd, Martine van der Ploeg

et al.

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 198, P. 115813 - 115813

Published: Nov. 27, 2023

Language: Английский

Citations

5
Estimating plastic pollution levels in rivers through harmonized monitoring strategies DOI Creative Commons
Tim van Emmerik, Sabrina Kirschke, Louise Schreyers

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: Feb. 13, 2023

Abstract Plastic pollution in freshwater environments is an emerging threat to ecosystem health and human livelihood. Plastics that accumulate rivers lakes over long time periods have direct local impact, may eventually also reach the world’s oceans. Monitoring river plastic therefore key quantify, understand reduce plastics all aquatic ecosystems. Unfortunately, global monitoring still its early stage. The lack of harmonization between ongoing efforts compromises comparison combination available data. Recently, United Nations Environment Programme (UNEP) launched guidelines on lakes, provide a starting point for practitioners scientists towards harmonized data collection, analysis, reporting. Here, we demonstrate application those through practical workflow support design effective strategies. five-step iterative approach aims match defined research goal or question resources basin characteristics. To test relevance different settings, applied three across relevant gradients, including geography, hydrology, levels. In Rhine (Switzerland, France, Germany, Netherlands) showed urban areas tributaries act as entry points pollution. For Odaw (Ghana) compared floating, terrestrial riverbank plastics, identifying source accumulation zones. Finally, Mekong (Cambodia) quantified contribution city Phnom Penh quantifying mass balance Mekong-Tonle Sap-Bassac region. We show despite simplicity selected methods limited duration can crucial insights state very basins. Although each case study focused one specific goal, directly transferable any globally. Data collection reaching local, regional goals reducing With our paper aim simple comparable

Language: Английский

Citations

4
Exploring factors driving macroplastic emissions of Mahiga Creek, Cebu, Philippines to the estuary DOI

Vince Bardenas,

Mathew Niño Dy,

Sidney Lorenz Ondap

et al.

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 193, P. 115197 - 115197

Published: June 23, 2023

Language: Английский

Citations

4
Wasted shores: Using drones to monitor the spatio-temporal evolution of debris accumulation hotspots on South Africa's Umgeni River DOI Creative Commons

Tadiwanashe Gutsa,

Cristina Trois, Robin de Vries

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 955, P. 176791 - 176791

Published: Oct. 9, 2024

Rivers are major contributors of plastic waste to the oceans. Running through northern part 1.3 million-inhabitants City Durban, South Africa, Umgeni River is estimated flush in order tens hundreds tonnes into Indian Ocean every year. The riverbanks lined with and other macro-waste accumulation zones formed due direct littering occasional deposition river debris loads. This study presents use Unmanned Aerial Vehicles (UAVs) hydro-meteorological sensors (1) identify, quantify monitor such anthropogenic hotspots; (2) investigate influence rainfall, water level a flood event on spatio-temporal evolution hotspots, evidencing debris' availability leak Ocean. one-year aerial monitoring (2021-2022) hotspots shows that extreme hydrometeorological events have an immediate but short-term effect erosion stocks riverine systems. We observe reduction mean index changes hotspot surface area after flooding were 2-5 times higher than non-flood conditions. Despite visual evidence seasonality between wet dry season, only 'natural' type showed significant change. Our findings support reported inconsistencies macro-debris hydrological factors. Although data contributes baseline for River, future ground truth sampling finer scales important fully understand transfer mapping understanding their dynamics supports policymakers planning timing mitigate environmental pollution.

Language: Английский

Citations

1
Students’ perceptions and inclination towards solid waste segregation for circular economy in Krobo municipalities of Ghana: awareness, willingness and potential determinants DOI
Lloyd Larbi, William K. Heve, Richard Amfo-Otu

et al.

Journal of Material Cycles and Waste Management, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Language: Английский

Citations

1
Gauging the ungauged: estimating rainfall in a West African urbanized river basin using ground-based and spaceborne sensors DOI Creative Commons
Linda Bogerd, Rose Boahemaa Pinto, Hidde Leijnse

et al.

Hydrological Sciences Journal, Journal Year: 2023, Volume and Issue: 69(2), P. 259 - 273

Published: Nov. 22, 2023

Accurate observations of the spatiotemporal variability precipitation are crucial for hydrological forecasts, notably over rapidly responding urban areas. This study assessed accuracy four rainfall datasets (three satellite products: IMERG-V06B, MSG-VIS, and MSG-IR; TAHMO gauges) Odaw catchment (Accra, Ghana) from Jan-2020–Jul-2022. IMERG is hardly able to capture strong spatial required flood forecasting, although its annual sums were comparable MSG-IR. MSG-IR has difficulties during wet season. MSG-VIS only available daytime limited. estimates high when other products do not detect rain. gauges high-intensity events their reasonably well. Still, some (daily) accumulations doubtful, data gaps exist due technical issues. The results this will assist modellers in choosing appropriate dataset at resolution.

Language: Английский

Citations

3
Tracking Trash: Understanding Patterns of Debris Pollution in Knoxville’s Urban Streams DOI Creative Commons
Scott Greeves

Sustainability, Journal Year: 2023, Volume and Issue: 15(24), P. 16747 - 16747

Published: Dec. 12, 2023

Urban streams and rivers often experience high levels of pollution from anthropogenic sources. Litter plastic debris are particular concern because they negatively impact ecosystem health, increase the risk flooding, limit human recreational opportunities. In City Knoxville, Tennessee, several urban posted as impaired, with health use advisories in place. Despite remediation efforts local governance charitable initiatives, stream remains a pervasive issue Knoxville. To support inform actions sustainable policy-making, this study seeks to model relationship between meteorological hydrological variables three Knoxville’s creeks. The uses an innovative approach that includes data cleanup initiative. results, which identify number significant relationships, discussed relate locally specific context. implications for policy-making discussed. Also, limitations directions future presented.

Language: Английский

Citations

1