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61,005 resultsShowing papers similar to Arctic Amphipods as bioindicators of plastic pollution: identification and simultaneous quantification of small microplastics and microlitter (< 100 μm)
ClearSmall microplastics and other components ofmicrolitter in Arctic invertebrates (Amphipods)
Researchers investigated small microplastics (under 100 micrometers) and other microlitter components — including plastic additives and non-plastic fibers — in Arctic amphipod crustaceans to evaluate their potential as bioindicators of plastic pollution in polar environments. The study quantified and identified small microplastics and microlitter in Arctic amphipod species, noting that their small size facilitates atmospheric and oceanic transport far from pollution sources and easy ingestion by organisms entering the trophic web.
Small microplastics and other components of microlitter in Arctic invertebrates (Amphipods)
Researchers investigated small microplastics (less than 100 µm) and other microlitter components in Arctic amphipod invertebrates, addressing a gap in knowledge since most Arctic microplastics research has focused on particles larger than 100 µm. The study characterised the presence and composition of these smaller particles within this ecologically important invertebrate group.
Small microplastics and other components of microlitter in Arctic invertebrates (Amphipods)
Researchers examined small microplastics (under 100 µm) and other microlitter components in Arctic amphipods, addressing the relatively understudied size fraction of microplastic contamination in marine invertebrates from polar regions. The study characterized particle types, sizes, and abundances found within these organisms to better understand contamination pathways in Arctic food webs.
Microlitter in arctic marine benthic food chains and potential effects on sediment dwelling fauna
Researchers measured microlitter concentrations in arctic marine sediments and biota at Svalbard and Greenland, finding higher concentrations and greater diversity of plastic types near human settlements and sites of abandoned fishing gear. Laboratory experiments on an arctic amphipod showed physiological effects — including altered feeding rates and respiration — only at concentrations much higher than those currently found in the field.
Abundance and characterization of microplastics in amphipods from the Japanese coastal environment
Researchers found high levels of microplastic ingestion in coastal amphipods from Japan, with up to 76 particles per individual and 83% of particles smaller than 90 µm, predominantly polyethylene, raising concerns about microplastic transfer through coastal food webs.
First Assessment of Plasticizers in Marine Coastal Litter-Feeder Fauna in the Mediterranean Sea
Five small-sized Mediterranean amphipod crustacean species from coastal litter-feeder habitats were analyzed for plasticizer contamination, finding detectable levels and identifying these litter-feeding invertebrates as potential monitors of microplastic-associated chemical pollution.
First evidence of microplastics ingestion in benthic amphipods from Svalbard
Researchers provided the first evidence of microplastic ingestion by benthic amphipods (Gammarus setosus) from Svalbard in natural conditions, identifying plastic particles via Nile Red staining and micro FT-IR spectroscopy and noting potential for trophic transfer in Arctic food webs.
Effects of environmentally relevant concentrations of microplastics on amphipods
Researchers exposed two amphipod species to environmentally relevant polyethylene microplastic concentrations and found increased mortality and oxidative stress, with species-specific sensitivity suggesting ecological impacts even at low exposure levels.
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.
Small Microplastics: A yet Unknown Threat in the Svalbard (Norway) Region
Researchers investigated the presence of small microplastics and nanoplastics in the Arctic Svalbard region, where climate change is accelerating ice melt and increasing shipping activity. Initial analyses of amphipods collected near Ny-Alesund confirmed the presence of small microplastics in Arctic marine organisms. The study outlines ongoing research efforts to understand how these tiny plastic particles move through polar food webs and affect both local ecosystems and human health.
Mussels (Mytilus spp.) in Svalbard contain microplastic particles in tissues: Implications for monitoring
Researchers found microplastic particles in the tissues of blue mussels collected from intertidal zones in Arctic Svalbard, detecting 148 particles per sample on average and identifying polyethylene and polystyrene as dominant polymers, with implications for Arctic food web monitoring.
Fish species, habitat, and capture location outweigh fish mass as drivers of microplastic pollution in Canadian Arctic fishes
Researchers investigated microplastic contamination in 435 stomachs and gastrointestinal tracts of seven freshwater fish species from the Canadian Arctic. The study found that fish species, habitat type, and capture location were more important drivers of microplastic levels than fish size, with demersal species and those near larger human populations containing significantly more microplastics.
Microplastic pollution in the Arctic Ocean: Assessing ingestion and potential health effects in Calanus and Neocalanus copepods
This review assessed the extent of microplastic ingestion by Arctic marine organisms and evaluated the potential risks to both wildlife and human consumers of Arctic seafood. The authors found evidence of microplastic ingestion across multiple species and called for more research on long-term ecological impacts in polar environments.
Detection, counting and characterization of nanoplastics in marine bioindicators: a proof of principle study
Researchers demonstrated a proof-of-concept workflow for detecting and counting nanoplastic particles (below 1 µm) in marine invertebrate tissues using electron microscopy and spectroscopic confirmation, finding nanoplastics in marine bioindicator species and establishing a methodology for future monitoring programs.
A New Method for Microplastics Identification in Copepods
Researchers developed and validated methods to identify small microplastics (under 10 micrometers) in the copepod Eurytemora affinis using epifluorescence microscopy and Raman microspectroscopy. The study used labeled polystyrene, polyethylene, and nylon particles to calibrate the detection methods. Improved identification of small microplastics in zooplankton is important for understanding plastic entry into marine food webs.
Co-contaminants of microplastics in two seabird species from the Canadian Arctic
This study examined whether Arctic seabirds that ingest microplastics also accumulate chemical contaminants carried by the plastic particles. The findings suggest that microplastics can act as vectors for delivering toxic chemicals to seabirds, adding to the burden of pollutants already present in Arctic food webs.
Microplastics in Arctic polar waters: the first reported values of particles in surface and sub-surface samples
Researchers reported some of the first measured values for microplastic particles in Arctic polar waters, finding contamination even in these remote high-latitude waters and raising questions about long-range transport mechanisms.
Accumulation of Plastic Debris and Associated Contaminants in Aquatic Food Webs
Researchers built a food web model simulating microplastic and chemical contaminant transfer through an Arctic marine food chain from zooplankton to polar bears. The model found that while microplastics themselves do not biomagnify substantially through trophic levels, they can alter the bioaccumulation patterns of hydrophobic organic chemicals depending on the chemical properties and organism physiology.
Disentangling the influence of microplastics and their chemical additives on a model detritivore system
Researchers disentangled the physical and chemical effects of microplastics on freshwater detritivores, finding that chemical additives leaching from plastics contributed more to negative impacts on organisms than the polymer particles themselves.
Uncovering the Hidden Dangers of Microplastic Pollution in Lake Ecosystems: Effects of Ingestion on Talitrid Amphipods
Researchers demonstrated that talitrid amphipods from Lake Albano readily ingested multiple polymer types delivered through food tablets, and within 24 hours the microplastics disrupted energy metabolism by altering glucose, glycogen, and lipid levels in the organisms.
Understanding the occurrence and fate of microplastics in coastal Arctic ecosystems: The case of surface waters, sediments and walrus (Odobenus rosmarus)
This holistic study examined microplastics in Arctic surface waters, sediments, and walrus tissues in coastal Svalbard, detecting plastics across all compartments and documenting for the first time microplastic occurrence in walrus gastrointestinal tracts.
Co-contaminants of microplastics in two seabird species from the Canadian Arctic
Researchers investigated organic and inorganic co-contaminants associated with ingested microplastics in northern fulmars and black-legged kittiwakes from the Canadian Arctic, finding that fulmars had higher levels of microplastic contamination and plastic-additive organic compounds than kittiwakes, and examining the extent to which ingested microplastics act as transport vectors for persistent organic pollutants and trace metals.
Microplastic ingestion and plastic additive detection in pelagic squid and fish: Implications for bioindicators and plastic tracers in open oceanic food webs
Researchers examined microplastic ingestion in fish and squid from the open Northeast Atlantic and detected phthalate plasticizers in their tissues. Both fish species and all three squid species had ingested microplastics, with fibers being the most common type. The presence of plastic additives in these open-ocean species suggests that microplastic contamination and associated chemical exposure extend well beyond coastal areas into the deep ocean food web.
Transport, Fate, and Effects of Microplastics in a Rapidly Changing Arctic
This doctoral dissertation investigates how microplastics move through Arctic ecosystems — via seabirds, atmospheric deposition, and local community sources — and what happens when they arrive. Arctic char fish contained elevated microplastic concentrations, and laboratory experiments showed that polyurethane particles combined with chemical additives impaired larval fish growth and development, demonstrating that microplastics function as multi-dimensional contaminants whose physical form and chemical cargo together determine their ecological impact.