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61,005 resultsShowing papers similar to Characterization and ecological risk assessment of toxic metals in mangrove sediments near Langen Village in Tieshan Bay of Beibu Gulf, China
Clear[Occurrence Characteristics of Microplastics in Mangrove Sediments in the Jiulong River Estuary and the Association with Heavy Metals].
Researchers measured microplastic abundance and types in mangrove wetland sediments at the Jiulong River estuary in China, also examining associations with heavy metals. The findings show that mangrove sediments accumulate both microplastics and metals, raising concerns for the health of these coastal ecosystems.
The distribution, characteristics and ecological risks of microplastics in the mangroves of Southern China
Microplastics were found to be widespread in mangrove sediments across Southern China, with higher concentrations in areas closer to urban development and aquaculture. The study highlights mangroves as accumulation zones for microplastic pollution, which could threaten these ecologically important coastal ecosystems.
Assessing the Interrelationship Between Microplastics and Polychlorinated Biphenyls Contamination in Chinese Mangrove Sediment
Researchers quantified polychlorinated biphenyl (PCB) concentrations on microplastics extracted from mangrove sediments across representative sites in China, investigating the interrelationship between MP pollution dynamics and PCB contamination in these critical intertidal ecosystems. The study reveals how mangrove sediments accumulate both MPs and co-associated hydrophobic organic contaminants, highlighting combined pollution risks.
The Ecological-Health Risks of Potentially Toxic Metals in the Surface Sediments and Leaves of Salt-Secreting Avicennia officinalis as Potential Phytoremediators: A Field-Based Biomonitoring Study from Klang Mangrove Area
Surface sediments in the Klang mangrove ecosystem were analyzed for potentially toxic metals, revealing elevated concentrations of lead, cadmium, and zinc that pose ecological and human health risks. Avicennia officinalis was assessed for phytoremediation potential, showing uptake of certain metals from contaminated sediments.
Spatial Distribution and Risk Assessment of Heavy Metals in Sediments of the Mangrove Ecosystem in Ras Mohammed Protectorate, Gulf of Aqaba, Red Sea
Researchers measured heavy metal concentrations (including lead, cadmium, copper, and zinc) in mangrove sediments of Ras Mohammed Protectorate in the Gulf of Aqaba, Red Sea, and assessed ecological risks. The spatial distribution showed variation across sites, with some metals elevated above background levels in areas closer to human activities.
Characteristics and distribution of microplastics in the coastal mangrove sediments of China
A survey of mangrove sediments along China's coast found microplastics were ubiquitous, with concentrations and polymer types varying by proximity to human activity and hydrological conditions. The study shows that mangrove forests, which provide critical coastal ecosystem services, are accumulating significant quantities of plastic pollution.
Multidimensional Assessment of Microplastic Pollution in Mangrove Wetlands: Driving Mechanisms, Carbon Contribution, and Ecological Risk
Scientists found tiny plastic particles called microplastics throughout mangrove wetlands in China, with the highest levels in areas used for fishing and fish farming. These plastic particles are building up in the sediment and water, creating pollution hotspots that pose moderate ecological risks to these important coastal ecosystems. This matters because mangroves help protect coastlines and support marine life that humans depend on for food, so plastic pollution in these areas could ultimately affect our food supply and coastal protection.
Occurrence, Source Apportionment, and Risk Assessment of Antibiotics in Mangrove Sediments from the Lianzhou Bay, China
Researchers assessed the occurrence and ecological risks of 39 different antibiotics in mangrove sediments from Lianzhou Bay, China. They found antibiotics from multiple classes present at measurable concentrations, with aquaculture and urban discharge identified as primary sources. The study warns that antibiotic contamination in these sensitive coastal ecosystems may contribute to the spread of antimicrobial resistance.
Microplastics and accumulated heavy metals in restored mangrove wetland surface sediments at Jinjiang Estuary (Fujian, China)
Microplastics in restored mangrove wetland sediments in China were found in higher concentrations than in adjacent mudflats, suggesting that mangrove restoration itself may promote plastic accumulation. Surface analysis of microplastics revealed the presence of toxic metals including chromium, zinc, lead, and cadmium, indicating plastics as a carrier for these pollutants.
Preliminary Determination of Heavy Metals in Sediment, Water, and Some Macroinvertebrates in Tawi-Tawi Bay, Philippines
Researchers conducted a preliminary assessment of heavy metal concentrations in sediment, water, and macroinvertebrates at multiple sites in Tawi-Tawi Bay in the Philippines. The study establishes baseline data on chemical pollution in this understudied coastal area.
Ecological risk assessment of microplastics and heavy metals in Northern Vietnam's estuarine sediments: A case study of Ba Lat and Bach Dang
Researchers assessed microplastic abundance and ecological risk alongside ten heavy metals in estuarine sediments from the Ba Lat and Bach Dang estuaries of northern Vietnam's Red-Thai Binh River system, finding co-contamination patterns that pose compounded ecological risks to these biodiverse coastal ecosystems.
Abundance and characteristics of microplastics in the mangrove sediment of the semi-enclosed Maowei Sea of the south China sea: New implications for location, rhizosphere, and sediment compositions
Microplastics were widespread in mangrove sediments of the semi-enclosed Maowei Sea in southern China, with concentrations influenced by location within the mangrove, proximity to roots, and sediment composition. The study provides new insight into how mangrove ecosystems trap and accumulate microplastics, raising concerns for the health of these ecologically important coastal habitats.
Microplastics in mangroves with special reference to Asia: Occurrence, distribution, bioaccumulation and remediation options
This review examines microplastic contamination in Asian mangrove ecosystems, finding higher pollution levels near fishing, tourism, and industrial areas. Organisms throughout the mangrove food web, from shellfish to fish, accumulate microplastics based on their feeding habits and habitat. While mangrove plants can trap some microplastics in their roots, the widespread contamination of these coastal ecosystems raises concerns about the safety of seafood harvested from mangrove areas for human consumption.
Revealing Microplastic Contamination in Mangrove Sediments from Setiu Wetlands, Malaysia
Researchers found 2,292 microplastic particles per kilogram of sediment in the mangrove wetlands of Setiu, Malaysia, with over 80% being tiny fibers likely from fishing gear and packaging. Areas near aquaculture operations had the highest contamination levels, and the microplastic surfaces showed signs of environmental degradation that could make them more toxic. Mangrove ecosystems act as natural traps for microplastics, concentrating pollution in habitats that are vital for fisheries and coastal protection.
Contamination in mangrove ecosystems: A synthesis of literature reviews across multiple contaminant categories
This review synthesizes research on five classes of contaminants in mangrove ecosystems, including microplastics, heavy metals, and organic pollutants. Microplastic levels in mangroves varied widely and lack established safety thresholds, while other pollutants were sometimes found at levels harmful to wildlife. Since mangrove ecosystems support fisheries and coastal communities, contamination of these environments could affect human food sources and livelihoods.
Occurrenceand characteristics of microplastics in benthic species from mangrove wetlands of Hainan, South China
Researchers found microplastics in 10 species of benthic organisms — including crabs, bivalves, and snails — across seven mangrove areas in Hainan, China, confirming that mangrove ecosystems and the organisms that inhabit them are significantly contaminated by microplastic pollution.
Distribution, characteristics, and human exposure to microplastics in mangroves within the Guangdong-Hong Kong-Macao Greater Bay Area
Researchers mapped microplastic distribution across three mangroves in the Greater Bay Area of southern China, finding concentrations up to 1,600 particles per kilogram with higher levels at forest fringes, and assessed potential human exposure pathways.
The Pollution Characteristics of Harmful Heavy Metal in Surface Sediment of Sepang River, Malaysia
Researchers measured arsenic, manganese, zinc, chromium, iron, and cobalt concentrations in mangrove sediments of the Sepang River in Malaysia using instrumental neutron activation analysis, assessing heavy metal pollution levels relative to background values. The study documents the distribution of harmful heavy metals in a coastal mangrove ecosystem subject to anthropogenic pressures.
Assessing microplastic contamination levels in ghana's mangrove wetlands
Researchers investigated microplastic contamination levels in Ghana's mangrove wetlands, examining how the morphology of mangrove root systems traps and accumulates plastic particles of all sizes and assessing the threat posed to these ecologically critical coastal ecosystems.
Assessing microplastic contamination levels in ghana's mangrove wetlands
Researchers assessed microplastic contamination levels in mangrove wetlands in Ghana, examining how mangrove tree morphology facilitates plastic accumulation and what concentrations and polymer types are present in these coastal ecosystems. The study addressed threats to mangrove ecological services including water quality improvement, carbon sequestration, and coastline protection posed by plastic pollution.
Assessment of heavy metal distribution, contamination, and ecological risk in mangrove sediments of the Nabq Protectorate, Gulf of Aqaba
This study analyzed the distribution of six heavy metals (Cu, Fe, Cd, Pb, Zn, and Mn) in mangrove sediments at Nabq Protectorate in the Gulf of Aqaba, finding that concentrations were generally below contamination thresholds compared to crustal averages. Iron showed the highest concentrations, while the area was assessed as largely uncontaminated relative to reference standards.
Distribution, Diversity, and Ecological Risks of Microplastics in Mangrove Ecosystems of a Southeastern Chinese Estuary
Researchers examined microplastic contamination in mangrove sediments of the Zhangjiang Estuary in southeastern China, finding an average abundance of about 220 items per kilogram. The study found that interior mangrove habitats accumulated significantly more microplastics than edge zones, and abundance declined from upstream to downstream, suggesting terrestrial runoff as a primary source.
Identification, Abundance, and Chemical Characterization of Macro-, Meso-, and Microplastics in the Intertidal Zone Sediments of Two Selected Beaches in Sabah, Malaysia
Researchers identified and characterized macro-, meso-, and microplastics in intertidal sediments of two beaches in Sabah, Malaysia, finding significant plastic contamination with heavy metal associations that pose potential ecological risks to coastal environments.
Contaminant Characteristics and Influencing Factors of Heavy Metals in Seawater and Sediments in a Typical Mariculture Bay in South China
Researchers assessed heavy metal contamination in seawater and sediments of Qinzhou Bay, a major mariculture area in South China, finding seasonal variations in metal concentrations influenced by river input, aquaculture activities, and hydrodynamic conditions.