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Floating microplastics in Svalbard fjords: High spatial variability requires methodological consistency in estuarine systems
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This study quantified floating microplastics in fjords around Svalbard, finding high spatial variability that necessitates dense sampling strategies, with concentrations influenced by sea ice dynamics and ocean current patterns.
Microplastic pollution was studied in surface waters of Isfjorden, Svalbard in July 2021 as a part of an international regional harmonisation exercise. Surface microplastics (0.5-5 mm) were sampled with a neuston net in triplicate per study site in several branches of Isfjorden, covering populated and unpopulated fjords. High spatial variability of microplastic abundance (0-32,700 items/km) was observed within a single fjord resulting from the hydrodynamic pattern formed through the interaction of surface currents, freshwater runoff, and wind conditions. Maximum microplastic abundance was not correlated with the distance from the local source and was instead defined by local small-scale hydrodynamics. Future recommendations for correct assessment of surface microplastics concentration in estuarine environments are presented.
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Researchers studied the distribution of surface and subsurface microplastics in Svalbard fjords over three years (July 2021-2023), investigating how hydrodynamics, river discharge, and local pollution sources influence microplastic fate in Arctic coastal waters.
Microplastics in Svalbard fjords: influence of hydrodynamics and local pollution sources
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Researchers studied microplastic distribution in Svalbard fjords over three years (July 2021-2023) using both neuston net surface sampling and pump-based subsurface collection, examining the role of rivers, local populations, and hydrodynamics on microplastic fate in Arctic coastal waters. They found the highest concentrations in populated Adventfjorden, with peak levels of up to 71,400 items/km2 along the river plume boundary.
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Researchers investigated microplastic contamination in the remote Rijpfjorden fjord in Northern Svalbard, sampling both surface water and the water column down to 200 m, and found widespread microplastic presence even in this Arctic environment far from major pollution sources.
Microplastic fate in Arctic coastal waters: accumulation hotspots and role of rivers in Svalbard
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Microplastic sampling in Svalbard fjords found surface MPs concentrated along river plume borders in populated areas (up to 71,400 items/km²), while intense riverine discharge during summer flushed MPs away from unpopulated fjords, highlighting the dual role of rivers as both sources and transporters of Arctic microplastics.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.