New research has revealed Microplastics deposited on seabeds have tripled in just 20 years.
Microplastics deposited on seabeds have tripled in just 20 years, reveals new research.microplastics are retained unaltered in marine sediments for several decadesScientists found that the total amount of microplastics deposited on the bottom of oceans has tripled in the past two decades – with a progression that corresponds to the type and volume of consumption of plastic products by society.
The new study shows that microplastics are retained unaltered in marine sediments, and that the microplastic mass sequestered in the seafloor mimics the global plastic production from 1965 to 2016.Researcher Dr Laura Simon-Sánchez said: ‘Specifically, the results show that, since 2000, the amount of plastic particles deposited on the seafloor has tripled and that, far from decreasing, the accumulation has not stopped growing mimicking the production and global use of these materials.
He said the amount of these three types of particles reaches 1.5mg per kilo of sediment collected, with polypropylene being the most abundant, followed by polyethylene and polyester. Professor Patrizia Ziveri, of ICTA-UAB, added: ‘The process of fragmentation takes place mostly in the beach sediments, on the sea surface or in the water column.
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