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Spatial and seasonal variation in diversity and structure of microbial biofilms on marine plastics in Northern European waters
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Researchers investigated how microbial biofilm communities on marine plastics vary by season, location, and plastic type in Northern European waters. The study found distinct spatial and seasonal patterns in plastisphere microbial communities on polyethylene terephthalate surfaces, providing insights into how plastic debris develops unique biological communities in marine environments.
Plastic pollution is now recognised as a major threat to marine environments and marine biota. Recent research highlights that diverse microbial species are found to colonise plastic surfaces (the plastisphere) within marine waters. Here, we investigate how the structure and diversity of marine plastisphere microbial community vary with respect to season, location and plastic substrate type. We performed a 6-week exposure experiment with polyethylene terephthalate (PET) bottles in the North Sea (UK) as well as sea surface sampling of plastic polymers in Northern European waters. Scanning electron microscopy revealed diverse plastisphere communities comprising prokaryotic and eukaryotic microorganisms. Denaturing gradient gel electrophoresis (DGGE) and sequencing analysis revealed that plastisphere microbial communities on PET fragments varied both with season and location and comprised of bacteria belonging to Bacteroidetes, Proteobacteria, Cyanobacteria and members of the eukaryotes Bacillariophyceae and Phaeophyceae. Polymers sampled from the sea surface mainly comprised polyethylene, polystyrene and polypropylene particles. Variation within plastisphere communities on different polymer types was observed, but communities were primarily dominated by Cyanobacteria. This research reveals that the composition of plastisphere microbial communities in marine waters varies with season, geographical location and plastic substrate type.
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Researchers examined how microbial communities colonize different types of plastic debris in the Mediterranean Sea, comparing biofilm composition across polymer types. They found that certain bacterial taxa preferentially colonize specific polymer surfaces, suggesting that plastic type influences the ecology of the plastisphere. The study contributes to understanding how ocean plastic shapes microbial community structure.
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Researchers tracked bacterial community development on five different plastic types submerged in coastal waters over two months. They found that bacterial community composition varied by both plastic type and stage of colonization, with distinct early and late succession patterns. The study provides evidence that different plastics may host different microbial communities, which has implications for understanding how plastic pollution influences marine microbial ecology.
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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.