Persistence of plastic debris and its colonization by bacterial communities after two decades on the abyssal seafloor
Persistence of plastic debris and its colonization by bacterial communities after two decades on the abyssal seafloor
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DOI：
10.1038/s41598-020-66361-7
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发表时间：
2020-06-11
影响因子：
4.6
通讯作者：
Haeckel, M.
中科院分区：
文献类型：
--
作者：
Krause, S.;Molari, M.;Haeckel, M.
进入海洋的塑料碎片的命运在很大程度上不受约束。目前，正在加紧研究长时间漂浮在海洋表面附近的塑料的非生物和微生物降解。相比之下，深海环境条件对聚合物性能和刚性的影响几乎是未知的。在这里，我们提出了塑料物品的独特结果，这些塑料物品被确定为在20多年前被引入到赤道东太平洋4150米水深的深海沉积物中。包括光学、光谱、物理和微生物分析在内的结果清楚地表明，散装聚合物材料没有显示出明显的物理或化学降解迹象。仅聚合物表面层显示出降低的疏水性，推测是由微生物定植引起的。塑料制品上的细菌群落差异显著（p
The fate of plastic debris entering the oceans is largely unconstrained. Currently, intensified research is devoted to the abiotic and microbial degradation of plastic floating near the ocean surface for an extended period of time. In contrast, the impacts of environmental conditions in the deep sea on polymer properties and rigidity are virtually unknown. Here, we present unique results of plastic items identified to have been introduced into deep-sea sediments at a water depth of 4150m in the eastern equatorial Pacific Ocean more than two decades ago. The results, including optical, spectroscopic, physical and microbial analyses, clearly demonstrate that the bulk polymer materials show no apparent sign of physical or chemical degradation. Solely the polymer surface layers showed reduced hydrophobicity, presumably caused by microbial colonization. The bacterial community present on the plastic items differed significantly (p