National Oceanographic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, Fishery Resource Analysis and Monitoring Division, 2725 Montlake Blvd. East, Seattle, WA 98112, USA.
Mar Pollut Bull. 2010 May;60(5):692-700. doi: 10.1016/j.marpolbul.2009.12.006. Epub 2010 Jan 22.
As marine debris levels continue to grow worldwide, defining sources, composition, and distribution of debris, as well as potential effects, becomes increasingly important. We investigated composition and abundance of man-made, benthic marine debris at 1347 randomly selected stations along the US West Coast during Groundfish Bottom Trawl Surveys in 2007 and 2008. Anthropogenic debris was observed in 469 tows at depths of 55-1280 m. Plastic and metallic debris occurred in the greatest number of hauls followed by fabric and glass. Mean density was 67.1 items km(-2) throughout the study area but was significantly higher south of 36 degrees 00'N latitude. Mean density significantly increased with depth, ranging from 30 items km(-2) in shallow (55-183 m) water to 128 items km(-2) in the deepest depth stratum (550-1280 m). Debris densities observed along the US West Coast were comparable to those seen elsewhere and provide a valuable backdrop for future comparisons.
随着全球海洋垃圾水平的不断增长，确定垃圾的来源、组成和分布以及潜在影响变得越来越重要。我们在 2007 年和 2008 年的底拖网调查中，在沿美国西海岸的 1347 个随机选择的站点调查了人为的、海底海洋垃圾的组成和丰度。在 55-1280 米深的 469 个拖网中观察到了人为的碎片。塑料和金属碎片在拖网中出现的次数最多，其次是织物和玻璃。整个研究区域的平均密度为 67.1 个/km²，但在 36 度 00'N 以南的地区显著更高。平均密度随深度显著增加，从浅水区（55-183 米）的 30 个/km²到最深水区（550-1280 米）的 128 个/km²。沿美国西海岸观察到的碎片密度与其他地方观察到的相似，为未来的比较提供了有价值的背景。
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