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Differences in microplastic abundances within demersal communities highlight the importance of an ecosystem-based approach to microplastic monitoring.
Marine Pollution Bulletin ( IF 5.3 ) Pub Date : 2020-09-11 , DOI: 10.1016/j.marpolbul.2020.111644
Elena Pagter 1 , João Frias 1 , Fiona Kavanagh 1 , Róisín Nash 1
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Plastic pollution is prevalent in all habitats and microplastic ingestion has been recorded in several different species examined to date. However, most studies have focused solely on commercial species. This study investigates microplastics (MPs) by assessing the levels present in a mixed demersal trawl at two sites in a coastal embayment. MPs were recovered from species' gastrointestinal tracts and polymers identified with μFTIR spectroscopic analysis. Particles recovered comprised 20% natural fibres. The majority of MPs were identified as PE, PVDF, and PETE. Results show an average MP range of 0.11–4.67 MPs individual−1. Fluctuating trendlines for MPs within species suggest that their bioavailability is influenced by several factors. Individual species show significant differences in ingested MP between trawls; however, when the entire trawl community is assessed there is no significant difference between sites. These results suggest that future studies should follow an ecosystem-based approach to monitor MPs.



中文翻译:

淹没社区内微塑性丰度的差异凸显了基于生态系统的微塑性监测方法的重要性。

塑料污染在所有生境中普遍存在,迄今为止,已经在几种不同的物种中记录了微塑性摄入。但是,大多数研究仅集中于商业物种。这项研究通过评估沿海沿岸两个地点的混合式深海拖网中的含量来研究微塑料(MPs)。从物种的胃肠道中回收MP,并通过μFTIR光谱分析鉴定出聚合物。回收的颗粒包含20%的天然纤维。多数国会议员被确定为PE,PVDF和PETE。结果显示,每-1个人的平均MP范围为0.11–4.67 MP。物种内MP的波动趋势线表明,其生物利​​用度受多种因素影响。个别物种在拖网之间摄食的MP表现出显着差异。但是,在评估整个拖网社区时,站点之间没有显着差异。这些结果表明,未来的研究应遵循基于生态系统的方法来监测国会议员。

更新日期:2020-09-11
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