Trapping of plastics in semi-enclosed seas: insights from the Bohai Sea, China

Li, Yanfang, Wolanski, Eric, Dai, Zhenfei, Lambrechts, Jonathan, Tang, Cheng, and Zhang, Hua (2018) Trapping of plastics in semi-enclosed seas: insights from the Bohai Sea, China. Marine Pollution Bulletin, 137. pp. 509-517.

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Abstract

Microplastics are abundant in semi-enclosed seas, presumably because of local trapping. To investigate this trapping effect, we confronted the SLIM plastic oceanography model with field data of the distribution of microplastics in the Bohai Sea, China. Seven source locations were selected to reveal the fate of plastic debris from industrial and domestic usages. The model predictions compared well with the observed distribution of microplastics, highlighting that most plastics were trapped in the Bohai Sea. The model suggests that microplastics distribution within the Bohai Sea both in the water and on the bottom varies seasonally with wind and currents and depends on a complex interaction between source locations, prevailing hydrodynamic conditions, degradation, settling and resuspension rates. Further field studies are warranted to enable the models to better parameterize the fate of microplastics, and particularly the accumulation zones, in other poorly flushed semi-enclosed seas worldwide, where microplastics should be classified as a persistent pollutant.

Item ID: 56193
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: microplastics; degradation; settling; wind effect; currents; source input
Copyright Information: Copyright © 2018 Elsevier Ltd. All rights reserved.
Funders: National Key Research and Development Plan of China (NKRDP), Chinese Academy of Sciences (CAS), National Natural Science Foundation of China (NNSFC), Natural Science Foundation of Shandong Province of China (NSFSPC), TropWATER at James Cook University (JCU)
Projects and Grants: NKRDP 2016YFC1402202, CAS KYSB20160003, CAS QYZDJ-SSW-DQC015, NNSFC 41806029, NSFSPC ZR2018QD006
Date Deposited: 25 Nov 2018 23:11
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040608 Surfacewater Hydrology @ 100%
SEO Codes: 91 ECONOMIC FRAMEWORK > 9199 Other Economic Framework > 919902 Ecological Economics @ 100%
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