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61,005 resultsShowing papers similar to Abundant plankton-sized microplastic particles in shelf waters of the northern Gulf of Mexico
ClearAbundance and characteristics of microplastics in beach sediments: Insights into microplastic accumulation in northern Gulf of Mexico estuaries
Researchers surveyed microplastic abundance in beach sediments across seven locations in Mobile Bay, a northern Gulf of Mexico estuary. The study found microplastics were ubiquitous at concentrations 66 to 253 times higher than reported for the open ocean, with polypropylene and polyethylene being the most common polymers, highlighting the extent of microplastic accumulation in estuarine environments.
Occurrence and amount of microplastic ingested by fishes in watersheds of the Gulf of Mexico
Researchers quantified microplastic ingestion by fishes across several freshwater and estuarine watersheds of the Gulf of Mexico. The study documented widespread microplastic occurrence in fish from these environments, contributing important data about freshwater contamination at a time when most research had focused on marine ecosystems.
The current state of microplastic pollution in the world's largest gulf and its future directions
This review critically assesses microplastic pollution research in the Gulf of Mexico, the world's largest gulf, covering 14 studies across water, sediment, and biota. Researchers found microplastic concentrations ranging widely across environmental compartments, with fragments being the most common shape and polyethylene the most prevalent polymer, and noted that 46 out of 100 fish species in the region are susceptible to microplastic ingestion.
Microplastics in the Northern Gulf of Mexico: A Literature Review
This review synthesized available literature on microplastics in the Northern Gulf of Mexico, finding that water column concentrations appear below global averages while shoreline sediment concentrations are slightly above average. The authors note that fewer biological specimens in the region appear to contain microplastics but stress that data gaps remain significant and continued monitoring is needed.
Coastal gradients of small microplastics and associated pollutants influenced by estuarine sources
Researchers sampled small microplastics in the Gulf of Cadiz at 5 m depth and found higher densities (130 mg/m3) than most other regions worldwide, with concentrations decreasing from the coastline outward and predominantly composed of polymer fragments between 45 and 193 μm.
First insight into plastics ingestion by fish in the Gulf of California, Mexico
Researchers found that 50% of 1,095 fish examined from 13 species in a tropical estuarine system in the Gulf of California had ingested plastic particles, with all recovered particles being threads and most being small microplastic fibres.
In situ microplastic ingestion by neritic zooplankton of the central Mexican Pacific
Researchers documented in situ microplastic ingestion by zooplankton in two bays of the central Mexican Pacific, finding that copepods, decapod larvae, and chaetognaths ingested microplastics, predominantly fibers, with higher rates during the rainy season.
Microplastic contamination in three environmental compartments of a coastal lagoon in the southern Gulf of Mexico
Researchers documented microplastic contamination in water, sediment, and tiny marine animals in a protected lagoon in Mexico's Gulf coast. Even though the site has protected status, microplastics were found in all three environmental compartments, with polyester and acrylic fibers being the most common types. The study shows that even remote, protected waterways are not immune to microplastic pollution.
Microplastics in sediments from the southern Gulf of Mexico: Abundance, distribution, composition, and adhered pollutants
Researchers analyzed microplastics in sediment samples from the southern Gulf of Mexico, covering over 26,000 square kilometers. They found an average of about 16 microplastic particles per kilogram of sediment, with fibers being the most common type, and detected heavy metals and polycyclic aromatic hydrocarbons adhered to the plastic surfaces. The study highlights how microplastics in ocean sediments can act as carriers of additional toxic pollutants, compounding environmental and health risks.
Microplastic ingestion by zooplankton in surf zone waters of sandy beaches: Are copepods potential reservoirs of these emerging pollutants?
Researchers investigated microplastic ingestion by tiny zooplankton species in the surf zone of Atlantic beaches in southern Brazil. They found microplastics in the water at concentrations up to 1,750 items per cubic meter, with fibers being the most common type, and confirmed that copepods were ingesting these particles. The study suggests that zooplankton in turbulent nearshore waters may act as reservoirs that introduce microplastics into marine food webs.
Ingestion of Microplastics by Zooplankton in the Northeast Pacific Ocean
Researchers collected zooplankton from the northeast Pacific Ocean and found microplastics ingested by multiple species, demonstrating that microplastic uptake occurs throughout the open ocean zooplankton community far from coastlines.
Microplastics contamination in molluscs from the northern part of the Persian Gulf
Researchers analyzed microplastic contamination in five species of mollusks from the northern Persian Gulf, including both gastropods and bivalves with different feeding strategies. They found microplastics in all species, with concentrations ranging from 0.2 to 21 particles per gram of soft tissue, and fibers were the most common type. The study indicates that microplastic contamination is widespread in Persian Gulf seafood and that filter-feeding organisms tend to accumulate more particles.
Microplastic ingestion in zooplankton from the Fram Strait in the Arctic
Researchers found that all five zooplankton species examined in the Arctic Fram Strait had ingested microplastics, with polyester and polyamide fibers being the most common types, confirming widespread microplastic contamination at the base of the Arctic food web.
Benthic foraminifera in Gulf of Mexico show temporal and spatial dynamics of microplastics
Researchers used benthic foraminifera from sediment cores in the Gulf of Mexico to reconstruct the temporal and spatial dynamics of microplastic accumulation since plastic production began. The study found that microplastic concentrations in sediment records reflected the historical increase in global plastic production over recent decades.
Microplastics in seawater and zooplankton: A case study from Terengganu estuary and offshore waters, Malaysia
Researchers collected seawater and zooplankton samples from Malaysian estuarine and offshore waters and found microplastics in both matrices, with zooplankton containing MP at higher concentrations than surrounding water, suggesting active uptake rather than passive ingestion during feeding.
Abundance and composition of microplastics in Tampico beach sediments, Tamaulipas State, southern Gulf of Mexico
Researchers analyzed beach sediments from Tampico, Mexico, on the Gulf of Mexico coast and found microplastics present in all samples. The most common types were fragments and fibers made of polyethylene and polypropylene, and concentrations ranged from 256 to 2,830 particles per 20 grams of sediment. The study adds to growing evidence that microplastic contamination is widespread along Gulf of Mexico coastlines.
Abundance And Characteristics of Microplastics Contaminating The Surface Water of The Inner Gulf of Thailand
Researchers collected surface water samples from 25 locations in the Inner Gulf of Thailand and found widespread microplastic contamination with varying concentrations and particle types. The study adds to regional evidence that the Gulf of Thailand is significantly impacted by microplastic pollution from both marine and land-based sources.
Microplastic occurrence in selected aquatic species of the Persian Gulf: No evidence of trophic transfer or effect of diet
Researchers examined microplastic contamination in six fish species, one mollusk, and three crustacean species from the Persian Gulf, finding no evidence of trophic transfer of microplastics or dietary effects on contamination levels across species.
Suspended microplastics in a highly polluted bay: Abundance, size, and availability for mesozooplankton
Researchers quantified suspended microplastics in Guanabara Bay, Brazil using different mesh size nets, finding high microplastic abundance and characterizing size distributions to assess the availability of plastic particles for ingestion by mesozooplankton as an entry point into the food web.
Microplastics in Kuwait marine environment: Results of first survey
Researchers conducted the first survey of microplastic pollution in Kuwait's coastal marine environment, sampling beach sediments, surface trawls, and fish and mussel gastrointestinal contents, and found surprisingly low microplastic levels compared to other global regions. The study provides baseline data for an understudied Gulf region and identifies priorities for future monitoring.
Extensive Microplastic Contamination in Southeastern Florida Forage Fishes
Forage fish from four coastal sites in southeastern Florida contained high levels of microplastics, with contamination levels comparable to or exceeding those in larger predatory species, highlighting the importance of lower trophic levels as vectors for plastic in marine food webs.
Occurrence and spatial distribution of microplastics in sediments from Norderney
Researchers surveyed sediments from Norderney in the North Sea and found widespread microplastic contamination, documenting spatial distribution patterns and particle characteristics across this tidally influenced coastal environment.
Occurrence of microplastics in commercial fish from a natural estuarine environment
Researchers examined the gastrointestinal tracts of commercial fish caught from a natural estuarine environment and found microplastics in a significant proportion of individuals, documenting both occurrence rates and particle characteristics.
The distribution and ecological effects of microplastics in an estuarine ecosystem
Researchers surveyed 22 intertidal sites and found that microplastic abundance, size, and diversity correlated with benthic microalgal communities and sediment biostabilization properties in an estuarine ecosystem.