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61,005 resultsShowing papers similar to Spatial Distribution and Risk Assessment of Heavy Metals in Sediments of the Mangrove Ecosystem in Ras Mohammed Protectorate, Gulf of Aqaba, Red Sea
ClearAssessment 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.
Assessment of Heavy Metal Contamination and Pollution Indices in Avicennia marina of Nabq Mangrove Forest, the Red Sea, Egypt
Not relevant to microplastics — this study assesses heavy metal concentrations (including copper, zinc, and lead) in the tissues of mangrove trees in an Egyptian Red Sea nature reserve to evaluate contamination from urbanization and industry.
Baseline evaluation of sediment contamination in the shallow coastal areas of Saudi Arabian Red Sea
Researchers conducted a broad contamination survey of coastal sediments along the Saudi Arabian Red Sea, measuring levels of PAHs, heavy metals, and plastics. The study found detectable contamination across all sites, providing important baseline data for a region where such environmental monitoring has been limited.
Evaluation of Urbanization Influences on Beach Sediment Contamination with Heavy Metals Along the Littoral Zone of Alexandria City, Egypt
Researchers assessed heavy metal contamination in beach sediments along Alexandria City, Egypt, finding concentrations of cadmium, cobalt, chromium, copper, lead, and zinc that were 2 to 26 times above natural background levels. The study identified urbanization, tourism, harbors, and industrial activities as primary anthropogenic sources, with zinc levels high enough to pose adverse risks to marine life.
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.
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.
Environmental Quality and Ecological Risk Assessment of Heavy Metals in the Zhuhai Coast, China
Researchers assessed heavy metal distribution and ecological risk in seawater, sediments, and organisms across the Zhuhai coast of China, finding that copper, zinc, and lead exceeded seawater standards and that cadmium and copper posed moderately high ecological risk. Chemical company emissions were identified as the main contributors to the elevated cadmium and copper levels.
Characterization and ecological risk assessment of toxic metals in mangrove sediments near Langen Village in Tieshan Bay of Beibu Gulf, China
Researchers assessed toxic metal contamination in mangrove sediments near Langen Village in Tieshan Bay, China, following recent coastal development. The study investigated the distribution patterns, ecological risks, and potential sources of seven toxic metals in the intertidal zone, providing insight into how reclamation activities affect pollution levels in shallow mangrove ecosystems.
Literature Analysis and Synthesis of the Red Sea Mangrove Ecosystem: Decades of Human Impacts and Knowledge Gaps
This four-decade literature review assessed human-induced pollution in Red Sea mangrove ecosystems, identifying key knowledge gaps and providing recommendations for conservation and management to address climate-related and anthropogenic stressors.
Heavy Metal Pollution and Potential Ecological Risk Assessment in a Typical Mariculture Area in Western Guangdong
Researchers assessed heavy metal contamination in seawater, sediments, and feed in a mariculture area of western Guangdong, China, finding that lead and copper exceeded standard limits in breeding wastewater and that the sediment was at low to moderate ecological risk from chromium, copper, arsenic, cadmium, and lead.
Health risk assessment of heavy metals in marine fish caught from the northwest Persian Gulf
Not a microplastics paper — this study measures heavy metal concentrations (nickel, zinc, copper, lead, cadmium) in marine fish from the Persian Gulf and assesses the associated human health risk from fish consumption.
Comprehensive assessment of microplastic contamination and ecological risks in mangrove sediments along the coasts of the Persian Gulf and Gulf of Oman
Microplastic contamination in mangrove sediments along the Persian Gulf and Gulf of Oman coasts was characterized, revealing widespread pollution dominated by fibers and fragments, with ecological risk assessments indicating moderate to high risk levels across multiple sites.
Heavy metal mobility and bioavailability in sediment fractions of major tourist beaches on the south-west coast of India: Implications for coastal ecological health
Researchers applied sequential extraction to sediments from four tourist beaches in Kovalam, India, characterizing the mobility and bioavailability of seven heavy metals across five geochemical fractions, finding copper and cadmium at high pollution and enrichment levels and identifying significant non-carcinogenic health risks for children from lead, chromium, zinc, and copper at all beaches.
Seasonal variation and mobility of trace metals in the beach sediments of NW Borneo
Researchers analyzed trace metal speciation in coastal sediments of NW Borneo using sequential extraction and found that copper and zinc — predominantly in bioavailable exchangeable fractions — pose significant contamination risks to aquatic organisms, coral reefs, and mangroves, driven by river inputs and monsoonal sediment dynamics.
Microplastic pollution in mangrove forests of safwa, western arabian gulf: Distribution, sources, and ecological impact
Researchers characterized microplastic pollution in the mangrove forests of Safwa on the Western Arabian Gulf coast, analyzing sediment samples from 15 locations to document distribution patterns, identify likely sources, and assess ecological risks to this carbon-sequestering coastal habitat.
Ecological-Health Risk Assessments of Heavy Metals (Cu, Pb, and Zn) in Aquatic Sediments from the ASEAN-5 Emerging Developing Countries: A Review and Synthesis
This review compiled copper, lead, and zinc concentrations in aquatic sediments across five ASEAN countries from 1981 to 2021, finding elevated heavy metal levels at sites with high human activity and assessing ecological and health risks from sediment contamination.
The seasonal assessment of heavy metals pollution in the waters of the Mediterranean and Atlantic seas of Morocco
This study measured heavy metal concentrations (Cd, Pb, Zn, Fe, Cu, Cr, Ni) in water samples from both the Mediterranean and Atlantic coasts of Morocco, evaluating seasonal variation in metallic pollution and associated health risks from seafood consumption.
Spatial Distribution and Socioeconomic Drivers of Plastic Debris in Mangrove Sediments along the Persian Gulf
Researchers assessed the spatial distribution and socioeconomic drivers of plastic debris in mangrove sediments across four sites in the Persian Gulf, including habitats in Bushehr and Hormozgan provinces. Plastic accumulation patterns were linked to proximity to populated areas, fishing activity, and tidal dynamics, highlighting the vulnerability of mangrove ecosystems to land-based plastic pollution.
Contamination, Toxicity and Ecological Risk Assessment of Heavy Metals in Surface Sediments of Coastal Areas of Bushehr Province: A Systematic Review Study
This systematic review of studies from 2012-2020 found that coastal surface sediments in Bushehr Province, Iran, contain heavy metals at levels posing moderate to high ecological risk, with nickel, chromium, and cadmium identified as the primary contaminants from petrochemical and industrial sources. The pollution levels exceeded safe thresholds in several coastal areas. Coastal sediment contamination with heavy metals often co-occurs with microplastic pollution, and microplastics can adsorb and concentrate these toxic metals, potentially increasing their bioavailability to marine organisms.
Evaluation of Heavy Metal Pollution in Commonly Consumed Mollusc (Crassostrea gasar) from Elechi Creek, River State, Nigeria and the Health Risk Implications
Researchers evaluated heavy metal concentrations in mangrove oysters (Crassostrea gasar) from Elechi Creek over six months, measuring copper, cadmium, zinc, lead, arsenic, and mercury across three stations. The study assessed potential adverse human health risks associated with consuming these commonly eaten molluscs.
Microplastic pollution in mangrove forests of safwa, western arabian gulf: Distribution, sources, and ecological impact
Researchers investigated microplastic distribution, sources, and ecological impact in the mangrove forests of Safwa along the Western Arabian Gulf coast of Saudi Arabia, analyzing 15 sediment samples from critical locations and finding average MP concentrations and identifying dominant polymer types threatening this essential coastal ecosystem.
Metal Levels in Crab Sentinel Species from the Mediterranean Sea: Safety and Toxicological Risk Assessment
Scientists tested three types of Mediterranean crabs for toxic metals like mercury, lead, and arsenic, and found levels of these harmful substances that exceeded safe limits for food. While the overall ocean pollution in the area was low, the high metal levels in the crabs suggest people who eat these shellfish could be exposed to dangerous amounts of toxins. This study highlights the need for regular testing of seafood to protect human health from metal contamination.
Spatial distribution characteristics, ecological risk assessment, and source analysis of heavy metal(loid)s in surface sediments of the nearshore area of Qionghai
Analysis of 93 surface sediment samples from the nearshore area of Qionghai found heavy metal contamination from natural weathering, agricultural, and industrial sources, with geo-accumulation indices and ecological risk assessments identifying priority elements of concern.
Quantifying microplastics pollution in the Red Sea and Gulfs of Suez and Aqaba: Insights from chemical analysis and pollution load assessment
This first comprehensive survey of microplastic pollution along Egyptian Red Sea shores found mostly low to medium levels of plastic contamination, with a marine protected area (Ras Mohamed) showing surprisingly high vulnerability. All particles were secondary fragments of weathered plastic, primarily polyethylene and polypropylene, linked mainly to maritime cargo and recreational boat traffic rather than land-based waste. The findings fill a significant geographic gap in global microplastic monitoring and highlight tourism and shipping as key management targets in this ecologically sensitive and endemic-rich region.