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首页> 外文期刊>PLoS One >Natural history matters: Plastics in estuarine fish and sediments at the mouth of an urban watershed
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Natural history matters: Plastics in estuarine fish and sediments at the mouth of an urban watershed

机译：自然历史重要事项：在城市分水岭口的河口鱼和沉积物中的塑料

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The extent to which small plastics and potentially associated compounds are entering coastal food webs, especially in estuarine systems, is only beginning to be realized. This study examined an estuarine reach at the mouth of urbanized Chollas Creek in San Diego, California to determine: 1) the extent and magnitude of microplastics pollution in estuarine sediments and fish, 2) the extent and magnitude of SVOC contamination in estuarine fish, and 3) whether fish preferentially ingested certain types of microplastics, when compared with the microplastic composition of creekbed sediments. Surface sediments (0–5 cm depth) contained about 10,000 small plastic pieces per m 2 , consisting mostly (90%) of fibers, and hard and soft pieces. Nearly 25% of fish contained small plastics, but prevalence varied with size and between species. Of the 25 types of small plastics found in sediment, fish preferred about 10 types (distinct colors and forms). Several SVOCs, both water soluble and sediment-associated compounds, were found in the two species of fish tested. This study revealed that a species’ natural history may influence contamination levels, and warrants further study to better understand the pathways of plastics and associated contaminants into and throughout coastal food webs, and the potential health risks for small and/or low-trophic level organisms.
机译：小塑料和潜在相关化合物进入沿海食品网的程度，特别是在河口系统中，只能开始实现。本研究审查了加利福尼亚州圣地亚哥城市化Chollas Creek口中的河口到达了：1）雌曲沉积物和鱼类的微薄污染的程度和程度，2）SVOC污染在河口鱼类的程度和程度， 3）与小溪沉积物的微压成分相比，鱼类优先摄取某些类型的微塑料。表面沉积物（0-5cm深度）每平方米含有大约10,000个小塑料件，主要由纤维（90％）纤维，柔软和柔软的碎片。近25％的鱼类含有小塑料，但流行率随着尺寸和物种之间而变化。在沉积物中发现的25种小塑料中，鱼类优选约10种（不同的颜色和形式）。在测试的两种鱼中发现了几种SVOC，两种水溶性和沉积物相关的化合物。本研究表明，物种的自然历史可能会影响污染水平，并认证进一步的研究以更好地了解塑料和相关污染物的途径进入和整个沿海食物网，以及小和/或低营养水平生物的潜在健康风险。

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