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Testing citizen science as a tool for monitoring surface water microplastics
Summary
Researchers tested citizen science as a monitoring method for surface water microplastics in the Baltic Sea using a custom manta trawl aboard a sailing vessel, sampling at seven locations and finding microplastic concentrations from 0.45 to 1.98 MP/m², and evaluated the viability of integrating citizen science into large-scale MP monitoring programs.
The use of citizen science in the collection of surface water marine microplastics (MP) samples with manta trawl was tested in the Baltic Sea, where the collection of surface water samples is often hampered by environmental conditions. Sampling was carried out at 7 locations around the Baltic Sea with a custom-made manta trawl which was operated onboard a sailing boat. The total concentrations of ≥ 0.3 mm MP in the samples ranged from 0.45 to 1.98 MP m. Based on the results and experiences from this study, citizen science could be introduced into the toolbox of monitoring large MP. When the common basic constraints of surface water sampling within a regional sea are defined and agreed upon, citizen science could be used for strengthening the power of assessments on the state of the marine environment by increasing the spatial coverage of the monitored area.