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Papers
61,005 resultsShowing papers similar to High-Resolution Seagrass Species Mapping and Propeller Scars Detection in Tanjung Benoa, Bali through UAV Imagery
ClearThe use of remote sensing for monitoring Posidonia oceanica and Marine Protected Areas: A systemic review
This systematic review examines how remote sensing technologies have been used to monitor Posidonia oceanica seagrass meadows and marine protected areas in the Mediterranean. Healthy seagrass beds are ecologically significant as they can trap microplastics in their sediments and are sensitive to pollution stress.
UAV Approach for Detecting Plastic Marine Debris on the Beach: A Case Study in the Po River Delta (Italy)
UAV imaging was used to detect and map anthropogenic marine debris on beaches in the Po River Delta, Italy, testing different image processing strategies and demonstrating that centimeter-scale spatial resolution UAV surveys can efficiently locate macroplastics before they degrade into harder-to-remove microplastics.
The use of emerging techniques to understand seagrass ecosystems: Case studies using Posidonia oceanica in the Eastern Aegean
This thesis evaluated new techniques for studying seagrass ecosystems in the Eastern Aegean, including kayak-mounted sonar for habitat mapping, environmental DNA for species detection, and microplastic pollution assessment in sediments. It found that microplastics were present in seagrass sediments, while kayak sonar can improve the accuracy of satellite-based seagrass maps.
Seagrass beds reveal high abundance of microplastic in sediments: A case study in the Baltic Sea
Seagrass bed sediments in the Baltic Sea were found to harbor significantly higher microplastic concentrations than surrounding bare sediments, indicating that seagrass canopies trap and accumulate microplastics and may be underappreciated hotspots of contamination.
Kelimpahan dan Jenis Mikroplastik pada Sedimen Lamun di Perairan Nusa Dua, Bali
Researchers measured microplastic abundance and types in seagrass bed sediments in Nusa Dua waters, Bali, Indonesia. Microplastics were detected in all samples, with the complex mix of nearby tourism, fishing, and port activities likely contributing to contamination. Seagrass beds can trap microplastics and are important habitats for marine biodiversity.
Assessment of marine debris in seagrass beds of Pramuka Island, Kepulauan Seribu
Researchers assessed marine debris and microplastic contamination in seagrass beds on Pramuka Island, Indonesia, finding six seagrass species with coverage ranging from 1.67-47.32% and identifying plastic as the most impactful debris type, with fiber microplastics (20-440 particles/kg) dominating and potentially interfering with seagrass respiration and photosynthesis.
Seagrass under siege: Investigating microplastic effects on seagrass ecosystems
Researchers reviewed the effects of microplastics on seagrass meadows, which are ecologically critical habitats that also trap and accumulate particulate matter. Evidence suggests microplastics can impair seagrass growth, root function, and associated fauna in these vulnerable ecosystems.
Profil Pencemaran Mikroplastik Pada Sedimen Ekosistem Mangrove di Pulau Serangan, Bali
Indonesian researchers measured microplastic contamination in mangrove sediments at Serangan Island, Bali, sampling across different depths and land-use types to map the distribution of plastic particles in this coastal ecosystem. Mangroves act as natural plastic traps due to their dense root networks, making them important sentinels for monitoring coastal plastic pollution.
Microplastics in the seagrass ecosystems: A critical review
This review critically assessed microplastic contamination in seagrass ecosystems worldwide, finding that these nearshore habitats accumulate significant plastic pollution due to their proximity to human activities and the trapping effect of submerged vegetation.
Seagrass under siege: Investigating microplastic effects on seagrass ecosystems
Researchers reviewed the current evidence for microplastic effects on seagrass meadows, covering physical, chemical, and biological mechanisms of harm. The review found that microplastics impair seagrass photosynthesis, root function, and associated fauna, threatening these ecologically critical coastal habitats.
A review of microplastic impacts on seagrasses, epiphytes, and associated sediment communities
This review synthesizes research on microplastic accumulation in seagrass ecosystems, examining effects on seagrass plants, epiphytic communities, and associated sediment biota. The authors identify seagrass meadows as both sinks for microplastics and potentially sensitive ecosystems where plastic contamination may disrupt complex ecological relationships.
Seagrass beds acting as a trap of microplastics - Emerging hotspot in the coastal region?
Seagrass beds in coastal waters were found to trap and accumulate microplastics at higher concentrations than surrounding unvegetated sediments, acting as effective sinks for plastic particles due to their dense canopy structure. This positions seagrass meadows as emerging hotspots of microplastic contamination in coastal ecosystems.
Trapping of microplastics and other anthropogenic particles in seagrass beds: Ubiquity across a vertical and horizontal sampling gradient
Researchers examined how seagrass beds trap microplastics and other anthropogenic particles by sampling along a vegetation cover gradient from dense beds to less vegetated patches. The study found that seagrass vegetation enhances the accumulation of plastic debris in both sediment and among plant structures. Evidence indicates that seagrass ecosystems act as significant sinks for microplastic pollution, with implications for the organisms that depend on these habitats.
Multi-Temporal UAV Data and Object-Based Image Analysis (OBIA) for Estimation of Substrate Changes in a Post-Bleaching Scenario on a Maldivian Reef
Researchers used multi-temporal drone imagery and object-based image analysis to map coral reef substrate changes following a bleaching event in the Maldives, demonstrating that repeated UAV surveys can detect and quantify reef recovery patterns at fine spatial scales.
Impacts of Marine Plastic Pollution on Seagrass Meadows and Ecosystem Services in Southeast Asia
Researchers assessed how marine plastic pollution affects seagrass meadows in Southeast Asia, a region where seagrass-derived ecosystem services are valued at over $100 billion annually. They found that plastics harm seagrass through spatial competition, chemical leaching, and reduced photosynthesis and growth. A risk assessment indicated that current microplastic concentrations already pose a high risk of decline to these critical marine habitats.
Microplastics distribution on the beach sediment based on satellite remote sensing: A case study in Bali, Indonesia
Researchers examined how seasonal ocean currents and tourism activity influence microplastic distribution across three beaches in Bali, Indonesia, between January and July 2024. The study integrated polymer-level characterization with site-specific hydrodynamic data and satellite remote sensing to map microplastic accumulation patterns in beach sediments.
Microplastic abundance and its relationship with sediment grain size in seagrass and bare flats of Panjang Island, Banten Bay, Indonesia
Researchers surveying Panjang Island in Indonesia's Banten Bay found microplastics throughout both seagrass and bare sediment areas, with finer-grained sediments accumulating more particles. Seagrass beds appeared to trap more microplastics than bare areas, meaning these critical coastal habitats — already under stress — may concentrate plastic pollution and expose the organisms sheltering in them to higher doses.
Plastic threats to coral reefs: A strategic management perspective from Bali's marine protected areas
Researchers assessed plastic debris levels in coral reef ecosystems at two marine protected areas in Bali, finding both macroplastics and microplastics present despite their protected status. Coral health was evaluated using underwater photo transects, and plastic particles were identified through Raman spectroscopy. The study highlights that marine protected areas alone are insufficient to prevent plastic pollution from reaching vulnerable reef ecosystems.
Unmanned Aerial Vehicles for Debris Survey in Coastal Areas: Long-Term Monitoring Programme to Study Spatial and Temporal Accumulation of the Dynamics of Beached Marine Litter
Researchers used UAVs to acquire georeferenced RGB images over a ten-month monitoring programme at a protected marine area near Pisa, Italy, to characterize the spatial and temporal distribution of beached marine debris. Post-processing via visual interpretation allowed localization and identification of anthropogenic debris accumulation patterns, demonstrating UAV-based surveying as an effective low-impact approach for long-term coastal litter monitoring.
A Deep Learning Model for Automatic Plastic Mapping Using Unmanned Aerial Vehicle (UAV) Data
Researchers applied a deep learning semantic segmentation model (ResUNet50 based on U-Net architecture) to UAV orthophotos to automatically map floating plastic debris, achieving F1-scores of 0.86-0.92 for specific plastic types including oriented polystyrene, nylon, and PET. Classification accuracy decreased with lower spatial resolution, with 4 mm resolution providing optimal performance for distinguishing plastic types.
High spatial resolution photo mosaicking for the monitoring of coralligenous reefs
Researchers developed a high-resolution photomosaic method using underwater cameras to monitor coralligenous reef ecosystems without disturbing them. These deep-water reef habitats are increasingly impacted by marine litter including plastic debris, which can smother and damage their complex structures.
An Assessment of Microplastics (MPs) Sedimentary Accumulation in Seagrass Meadows of Mare Island Conservation Area, North Maluku, Indonesia
Researchers conducted the first study of microplastic accumulation in seagrass meadow sediments at Mare Island Conservation Area, North Maluku, Indonesia, finding microplastic abundances of 13,839-37,000 particles per kilogram dry weight sediment, with fibres as the dominant morphology across both sampling stations.
Plastic Pollution as a Driver of Seagrass Ecosystem Degradation: a Systematic Review of Impacts and Mitigation Approaches
This systematic review examines how plastic pollution threatens seagrass ecosystems, which are vital for carbon storage, coastal protection, and marine biodiversity. Microplastics and larger debris smother seagrass beds, block light, and introduce harmful chemicals into sediments. Losing these habitats has cascading effects on fish populations and the communities that depend on healthy coastal waters.
Microplastic contamination in sediment and Strombus sp. on Bintan Island, Indonesia
Researchers assessed microplastic contamination in sediment and Strombus sp. gastropods collected from Bintan Island, Indonesia, a designated marine conservation area. The study found microplastics present in both sediment and the marine snails, highlighting contamination risks to seagrass ecosystems and associated biota from widespread plastic consumption.