Available online: https://pub.norden.org/temanord2022-532/ This project developed a best practice guide for the standardization of the analysis of plastics in fish stomachs which can be applied in small-scale laboratories with limited infrastructure, which is typical of rural Arctic areas. In order to monitor plastic in the North Atlantic marine environment and understand potential impacts of plastics for commercially important fish stocks, it is important to standardize methods. This study also used the new method to provide a comparison between cod stomachs in Norway, Iceland and Faroe Islands and found a distribution of microplastics particles ranging from 0-27% in detection frequency.
Available online: https://pub.norden.org/temanord2020-504/ Abstract [en] Microplastics in marine bivalves from the Nordic environment: MP were analysed in mussels at 100 sites from Grenland to the Baltic. MP were found in 4 out of 5 species. The coastal waters of the North Sea, Kattegat, Skagerrak, and the western Baltic appear to be areas of MP accumulation. Mussels from urbanized areas and harbours contained the most MP. The abundance of MP was especially high in the Oslofjord. A total of 11 different polymer types were detected through 3 chemical characterisation methodes. Black rubbery particles, possibly derived from tyre wear, were the dominant particle type. The presence of rubber compounds was confirmed for Blue mussels (Mytilus) in analysis using pyrolysis GC-MS. This is the first study to document these polymer types in mussels. Mussels, especially Mytilus spp., Limecola balthica and Abra nitida are suitable for monitoring of MP in Nordic waters.
This report summarises the knowledge on plastics in Nordic marine species. Nordic biota interacts with plastic pollution, through entanglement and ingestion. Ingestion has been found in many seabirds and also in stranded mammals. Ingestion of plastics has been documented in 14 fish species, which many of them are of ecology and commercially importance. Microplastics have also been found in blue mussels and preliminary studies found synthetic fibres in marine worms. Comparability between and within studies of plastic ingestion by biota from the Nordic environment and other regions are difficult as there are: few studies and different methods are used. It is important that research is directed towards the knowledge gaps highlighted in this report, to get a better understanding on plastic ingestion and impact on biota from the Nordic marine environment.
Available online: https://pub.norden.org/temanord2022-532/ This project developed a best practice guide for the standardization of the analysis of plastics in fish stomachs which can be applied in small-scale laboratories with limited infrastructure, which is typical of rural Arctic areas. In order to monitor plastic in the North Atlantic marine environment and understand potential impacts of plastics for commercially important fish stocks, it is important to standardize methods. This study also used the new method to provide a comparison between cod stomachs in Norway, Iceland and Faroe Islands and found a distribution of microplastics particles ranging from 0-27% in detection frequency.
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