Floating microplastics in Svalbard fjords: High spatial variability requires methodological consistency in estuarine systems.

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.

Assessment of seasonal variability of input of microplastics from the Northern Dvina River to the Arctic Ocean.

Northern Dvina River is one of the largest rivers in the European Arctic flowing into the White Sea through the populated regions with developed industry. Floating plastics include microplastics (0.5-5 mm) and mesoplastics (5-25 mm) were observed on seasonal variations in the Northern Dvina River mouth.

Microplastic variability in subsurface water from the Arctic to Antarctica.

Comparative investigations of microplastic (MP) occurrence in the global ocean are often hampered by the application of different methods. In this study, the same sampling and analytical approach was applied during five different cruises to investigate MP covering a route from the East-Siberian Sea in the Arctic, through the Atlantic, and into the Antarctic Peninsula. A total of 121 subsurface water samples were collected using underway pump-through system on two different vessels.

Distribution of floating marine macro-litter in relation to oceanographic characteristics in the Russian Arctic Seas.

The main objectives of this work were the acquisition of new data on floating marine macro litter (FMML) and natural floating objects in the Arctic seas, an initial assessment of the level of pollution by FMML and an analysis of potential sources. The results of this study present the first data on FMML distribution in Russian Arctic shelf seas in relation to oceanographic conditions (i.e.