期刊
MARINE POLLUTION BULLETIN
卷 146, 期 -, 页码 60-66出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.05.067
关键词
Plastic waste; Marine pollution; Litter flow; Water quality; Large European rivers
资金
- Service Atmosphere-Mer (SAM) platform from MIO
- Agence de l'Eau Rhone Mediterranee Corse project Blue-POLUT
- Agence de l'Eau Rhone Mediterranee Corse project CAREMED
- Labex OT-Med - MEDPOP-Excellence Initiative of Aix-Marseille University - A*MIDEX [ANR-11-LABX-0061, ANR-11-IDEX-0001-02]
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.
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