We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
In situ microplastics ingestion by Antarctic marine benthic invertebrates
AI summary Read the abstract
Researchers documented in-situ microplastic ingestion by benthic invertebrates in Antarctic waters, finding plastic particles in organisms living on the seafloor despite Antarctica's remoteness from major pollution sources. The results confirm that microplastic contamination has reached even the most isolated seafloor communities on Earth.
Microplastics have been recognised as persistent marine contaminants and mounting evidence supports their designation as anthropogenic stressors to marine organisms. Despite the remoteness of Antarctica, microplastics contamination has been reported in every marine environment investigated in this area to date. Due to ocean currents and frontal systems, microplastics may become entrapped within polar regions and increase bioavailibilty to inhabiting fauna. Antarctic marine benthic invertebrates represent a research priority due to their sensitivity to change as well as contribution to ecological functioning and food webs. The current study investigated microplastics ingestion by the epifaunal, carnivorous polychaete Barrukia cristata and the infaunal, filter-feeding bivalve, Laternula elliptica. Animals were collected by SCUBA adjacent to Rothera research station, Adelaide Island. After digestion in 10 % potassium hydroxide (KOH) followed by filtration, microplastics ingested by individual animals were separated. Microplastics were then counted and characterised by shape, colour, size and polymer type by Micro-Fourier transform Infrared spectroscopy. Polyethylene terephthalate (PET) was the most abundant polymer type, followed by polyacrylonitrile (PAN) and ethylene-vinyl acetate (EVA). Congruent to earlier reports, fibres were found to be the most abundant source of microplastics contamination. However, it must be highlighted that fragments were also recovered from the animals analysed. Results determined the current level of microplastics ingestion by two benthic marine invertebrates of different feeding strategies in coastal environments of the Antarctic Peninsula. These findings indicated the bioavailability of microplastics and highlighted the potential of trophic transfer throughout the Antarctic marine food web.
More Papers Like This
Quantifying microplastics concentration of invertebrates from three Antarctic fjords
AI summary Read the abstract
Researchers quantified microplastic contamination in marine invertebrates from three Antarctic fjords created by retreating glaciers. They found microplastics present in organisms even in these remote polar environments, with contamination levels varying between species and locations. The study adds to growing evidence that microplastic pollution has reached some of the most isolated ecosystems on Earth.
Determination of the presence of microplastics in intertidal sediments of deception island, antarctica
AI summary Read the abstract
Researchers determined the presence and characteristics of microplastics in intertidal sediments of Deception Island, Antarctica, providing evidence that plastic contamination has reached one of Earth's most remote environments and documenting the role of marine sediments as sinks for persistent microplastic pollution.
Hidden threat: microplastics interaction with Antarctic benthic invertebrates
AI summary Read the abstract
Researchers exposed three Antarctic benthic species, including a bivalve, to polyethylene microbeads to quantify ingestion rates and characterize microplastic interactions in Southern Ocean invertebrates, finding that these remote organisms ingest microplastics and highlighting significant gaps in understanding ecological consequences for Antarctic benthic biodiversity.
Species-, feeding type- and habitat-dependent intake of microplastics by Arctic and Antarctic marine invertebrates
AI summary Read the abstract
Scientists found tiny plastic bits (microplastics) in sea creatures living in remote Arctic and Antarctic waters — places far from major cities and factories — showing that plastic pollution has spread even to the most untouched corners of our oceans. Since these small creatures are eaten by fish and other animals up the food chain, this pollution could work its way toward the seafood many people eat, though more research is needed to understand exactly how much risk this poses to human health.
Plastic microfibre ingestion by deep-sea organisms
AI summary Read the abstract
Researchers provided the first evidence that microplastics are being ingested and internalized by deep-sea organisms living on the ocean floor. The study found plastic microfibres in multiple deep-water species, demonstrating that microplastic contamination has already reached some of the most remote habitats on Earth.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.