Marine debris on beaches of the Greater Sydney region
Marine debris on beaches of the Greater Sydney region
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大悉尼地区海滩上的海洋垃圾
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Wilson
中科院分区：
文献类型：
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作者：
D. Cunningham;S. Wilson
海洋废弃物直接威胁和间接影响全世界的海洋野生动物和人类。适当的管理需要关于特定区域碎片丰度、分布和来源的信息。此前，澳大利亚大悉尼地区没有这一数据。因此，对大悉尼地区的六个选定海滩进行了海洋废弃物调查。两个海滩从三个不同程度的城市化的地区，每月抽样一次，为期五个月。在一系列样带、地带和地层中进行了取样，以获得关于碎片的丰度、分布、组成和来源的信息。平均抽样海滩有33.3个项目每250平方米的样带，相当于2,664个项目每公里的海滩与20米宽的跨海岸亚空中区。绝大多数（89.8%）碎片是塑料，特别是硬塑料（52.3%），主要来自雨水或海滩游客。碎片密度最高的海滩位于城市化程度最低的地区，这可能是由于采样区之间的距离相对较小（<50公里），碎片能够从源头迅速扩散并传播很远。在样品区、海滩、海滩地层之间以及随着时间的推移，发现碎片丰度存在显著差异。大悉尼地区海洋垃圾的丰富程度与世界上一些污染最严重的海滩相当，因此是一个需要立即关注的问题。
Marine debris directly threatens and indirectly impacts upon marine wildlife and humans throughout the world. Proper management requires information on debris abundance, distribution and sources for specific regions. This data was previously unavailable for the Greater Sydney Region, Australia. Thus, a marine debris survey was conducted on six selected beaches from the Greater Sydney Region. Two beaches from each of three areas with differing degrees of urbanisation were sampled once a month for five months. Sampling was conducted from within a series of transects, zones and strata to obtain information on the abundance, distribution, composition and sources of debris. On average sampled beaches had 33.3 items per 250m 2 transect equating to 2,664 items per kilometre of beach with a 20m wide cross-shore sub-aerial zone. The vast majority (89.8%) of debris found was plastic, particularly hard plastic (52.3%) predominantly originating from stormwater or beachgoers. The beaches with the highest debris density were those within the least urbanised area, possibly due to the relatively small distance (<50km) between sample areas and the ability of debris to disperse quickly from its source and travel long distances. Significant differences in debris abundance were found between sample areas, beaches, beach strata and over time. The abundance of marine debris within the Greater Sydney Region was comparable to some of the most polluted beaches around the world, and is thus a problem that requires immediate attention.