Macro-litter in surface waters from the Rhone River: Plastic pollution and loading to the NW Mediterranean Sea
Macro-litter in surface waters from the Rhone River: Plastic pollution and loading to the NW Mediterranean Sea
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DOI：
10.1016/j.marpolbul.2019.05.067
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发表时间：
2019-09-01
影响因子：
5.8
通讯作者：
Sempere, Richard
中科院分区：
文献类型：
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作者：
Castro-Jimenez, Javier;Gonzalez-Fernandez, Daniel;Sempere, Richard
我们在这里提出的第一个估计浮动宏观垃圾在表面沃茨从罗纳河，根据每月的视觉观察在1年期间（2016-2017）。塑料占已确定项目的77%，证实了其在河流漂浮垃圾中的主导地位。碎片（2.5-50厘米）和一次性塑料（即袋子、瓶子和盖子/包装）是数量最多的物品。常见的非塑料漂浮垃圾是纸类物品（如包装材料和报纸）和金属物品（主要是罐头），分别占垃圾总量的14%和5%。一项较低的估计导致每年有223，000件塑料物品（相当于0.7吨塑料）通过罗纳河表面沃茨运输到狮子湾（地中海西北部）。漂浮的大型塑料只是罗纳河塑料出口总量的一小部分。我们的研究强调了目前实地观察和理论估计之间的差异。需要改进协调实地研究和模型验证的数据收集方法。
We present here the first estimates of floating macro-litter in surface waters from the Rhone River, based on monthly visual observations during 1-year period (2016-2017). Plastic represented 77% of the identified items, confirming its predominance in riverine floating litter. Fragments (2.5-50 cm) and Single Use Plastics (i.e. bags, bottles and cover/packaging) were among the most abundant items. Frequent non-plastic floating litter were paper items such as packaging material and newspapers, and metal items (mostly cans), representing 14% and 5% of total litter, respectively. A lower-end estimate resulted in similar to 223,000 plastic items (similar to 0.7 t of plastic) transported annually by the Rhone surface waters to the Gulf of Lion (NW Mediterranean Sea). Floating macroplastics are only a fraction of the total plastic export by the Rhone. Our study highlights the current discrepancy between field observations and theoretical estimations. Improvements are needed to harmonize data collection methodologies for field studies and model validation.