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Small Microplastics: A yet Unknown Threat in the Svalbard (Norway) Region
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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.
The Arctic Ocean is undergoing several transformations because of global climate change. Small microplastics (SMPs) or nanoplastics (NPs) carried by marine aerosols may settle in the land ice and be released to the waters, produced following its melting. As sea ice extent reduces and shipping and fishing activities increase, microplastics (MPs) may enter the region following ocean and maritime transports, with implications on Arctic biota, human health, and socioeconomic issues related to the exploitation of marine resources. First analyses on amphipods collected in Ny-Ålesund confirmed the presence of SMPs. Nevertheless, the threat posed by SMPs/NPs to polar biota and regional human health is not fully understood. This article addresses this issue and the need for organisms as potential bioindicators of plastic pollution, which is currently being carried out in the Svalbard region under the framework of the MICROTRACER project funded by the Italian Arctic Research Program (PRA, Call 2021). The outputs of this research are expected to contribute to deepening the current knowledge of SMPs in Svalbard, providing new insights on their occurrence, distribution, and transfer through the marine trophic web, to realize effective control and regulatory framework measures to implement an integrated multidisciplinary approach for monitoring and to reduce MPs pollution in this fragile polar environment.
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Marine Microplastics in Polar Region—a Spitsbergen Case Study
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Researchers detected both primary and secondary microplastics in waters around Svalbard (Spitsbergen) in the Arctic during a 2017 expedition. The findings confirm that microplastic pollution has reached even remote polar regions, raising concerns about contamination of Arctic ecosystems.
Small microplastics and other components of microlitter in Arctic invertebrates (Amphipods)
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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.
Identification and Quantification of Microplastics in Arctic Sea Ice North of Svalbard
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Researchers identified and quantified microplastics in Arctic sea ice north of Svalbard, finding microplastic particles encased in sea ice at concentrations consistent with prior studies in the region. The work contributes to documenting the extent of plastic pollution in one of the world's most remote and climatically sensitive environments.
Small microplastics and other components of microlitter in Arctic invertebrates (Amphipods)
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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.
Characteristics and quantification of small microplastics (<100 µm) in seasonal svalbard snow on glaciers and lands
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Researchers found tiny microplastic particles (smaller than 100 micrometers) in snow samples from Arctic glaciers and tundra in Svalbard, Norway. The amounts were lower on remote glaciers and higher near the research settlement, showing that these particles travel long distances through the air but also come from nearby human activity. This highlights how microplastic pollution reaches even the most isolated places on Earth.
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