Results 71 to 80 of about 660 (163)

Multiobjective Environmental Cleanup with Autonomous Surface Vehicle Fleets Using Multitask Multiagent Deep Reinforcement Learning

Advanced Intelligent Systems, Volume 8, Issue 2, February 2026.
This study presents a multitask strategy for plastic cleanup with autonomous surface vehicles, combining exploration and cleaning phases. A two‐headed Deep Q‐Network shared by all agents is traineded via multiobjective reinforcement learning, producing a Pareto front of trade‐offs.
Dame Seck, Samuel Yanes, Manuel Perales, Daniel Gutiérrez, Sergio Toral   +4 more
wiley   +1 more source

Temporal stability of riverbank macroplastic

Abstract Macroplastic pollution (>0.5 cm) is prevalent on riverbanks and floodplains globally. Macroplastic can reach riverbanks via various pathways. These pathways include direct littering, overland transport by wind or surface runoff, or transport and deposition by the river.
Rahel Hauk, Martine van der Ploeg, Tim H.M. van Emmerik, Adriaan J. Teuling   +3 more
openaire   +1 more source

Riverine macroplastic monitoring in Myanmar: sources and pollution dynamics in the Bago River

Microplastics and Nanoplastics
Global plastic pollution has been highlighted as an important environmental issue that requires urgent attention. Macroplastics, plastic items >2.5 cm, contribute the majority to global plastic pollution by mass and are the easiest to manage or remove ...
Rachel Hurley, Vilde Kloster Snekkevik, May Thazin Phoo, Kyaw Min San, Hans Nicolai Adam   +4 more
doaj   +1 more source

Plastic pollution: advances and challenges of two recent decrees in Brazil [PDF]

Brazilian Journal of Biology
Plastic pollution can be understood as degradation (or damage) to the environment due to substances made of different synthetic polymers (e.g., polypropylene) of different sizes (e.g., microplastics).
V. M. Azevedo-Santos, F. P. Ottoni
doaj   +2 more sources

Riverbank macrolitter in the Dutch Rhine–Meuse delta

Environmental Research Letters, 2020
Anthropogenic litter in aquatic ecosystems negatively impacts ecosystems, species and economic activities. Rivers play a key role in transporting land-based waste towards the ocean.
Tim van Emmerik, Caspar Roebroek, Winnie de Winter, Paul Vriend, Marijke Boonstra, Merijn Hougee   +5 more
doaj   +1 more source

Surface Chemical Analysis of Plastic Materials by X‐Ray Photoelectron Spectroscopy: Understanding Weathering, Fragmentation and Contaminant Uptake in Marine Environments

Macromolecular Materials and Engineering, Volume 311, Issue 2, February 2026.
This Perspective demonstrates how X‐ray photoelectron spectroscopy (XPS) uncovers surface chemical changes in plastics, providing insight into weathering‐driven fragmentation and contaminant adsorption. The Perspective underscores XPS's pivotal role in elucidating fragmentation mechanisms, predicting pollutant–plastic interactions, and guiding ...
Tiziano Di Giulio, Cosimino Malitesta, Elisabetta Mazzotta   +2 more
wiley   +1 more source

Riverine plastic emission from Jakarta into the ocean

Environmental Research Letters, 2019
Plastic pollution in aquatic environments is an increasing global risk. In recent years, marine plastic pollution has been studied to a great extent, and it has been hypothesized that land-based plastics are its main source.
Tim van Emmerik, Michelle Loozen, Kees van Oeveren, Frans Buschman, Geert Prinsen   +4 more
doaj   +1 more source

Tracing macroplastics redistribution and fragmentation by tillage translocation

Journal of Hazardous Materials
Soil is polluted with plastic waste from macro to submicron level. Our understanding of macroplastics (> 5 mm) occurrence and behavior has remained comparatively elusive, mainly due to a lack of a tracing mechanism. This study set up a methodology to trace macroplastic displacement, which combined magnetic iron oxide-tagged soil and macroplastic pieces
Maqbool, Ahsan, Guzmán, Gema, Fiener, Peter, Wilken, Florian, Soriano, María-Auxiliadora, Gómez, José A.   +5 more
openaire   +3 more sources

Diet and Feeding Behavior of the South Polar Skuas Stercorarius maccormicki in the Haswell Islands, East Antarctica

Birds
The diet and feeding behavior of South Polar Skuas (Stercorarius maccormicki) are well studied within the species’ breeding range but are poorly understood on the Haswell Islands. The aim of this study was to determine how South Polar Skuas use available
Sergey Golubev
doaj   +1 more source

The impact of floods on plastic pollution

Global Sustainability
Non-Technical Summary Plastic harms ecosystem health and human livelihood on land, in rivers, and in the sea. To prevent and reduce plastic pollution, we must know how plastics move through the environment.
Tim H. M. van Emmerik
doaj   +1 more source