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Plastic waste dominates seafloor litter in Mediterranean and Black Sea surveys

February 5, 2015

Plastic waste dominates seafloor litter in Mediterranean and Black Sea surveys

Researchers have trawled coastal areas of the Eastern Mediterranean and Black Sea for waste and found up to 1211 items of litter per km2. Plastic bags and bottles were some of the most commonly found items. They present the results in a recent study, which they say supports Marine Strategy Framework Directive (MSFD) implementation, as well as efforts to discourage plastic carrier bag use.

Marine litter has a range of damaging impacts. For instance, marine creatures can become entangled in floating nets or eat the litter. Floating litter can also transport non-native species into new environments and tiny plastic fragments, ‘microplastics’, have been shown to be long-term sources of pollutants, such as phthalates.

This study, conducted under the EU PERSEUS project1, assessed marine litter on the seafloor of five areas in the Eastern Mediterranean and the Black Sea — three gulfs in Greece, one gulf in Cyprus and one bay in Romania.

The researchers say this study highlights the need for action to tackle marine litter and is relevant to ‘descriptor 10’ of the MSFD. This is one of eleven qualitative criteria describing ‘good environmental status’ listed by the Directive and states that ‘Properties and quantities of marine litter do not cause harm to the coastal and marine environment’. An important first step in satisfying this descriptor is to quantify marine litter. There is only limited information on quantities in the Mediterranean and Black Sea, however.

The study trawled the seabeds of the five areas for litter at a total of 94 sampling stations in early 2013. The researchers point out that rocky areas cannot be trawled, and that they focused on fishing grounds with sandy or muddy floors.

Read more at "Science for Environment Policy": European Commission DG.

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