Marine plastic pollution costs the world up to $2.5tn a year
Fisheries, aquaculture, recreational activities and global wellbeing are all negatively affected by plastic pollution, with an estimated 1-5% decline in the benefit humans derive from oceans. The resulting cost in such benefits, known as marine ecosystem value, is up to $2.5tn a year, according to a study published this week in Marine Pollution Bulletin.
Plastic waste is also believed to cost up to $33,000 per ton in reduced environmental value, the study found. An estimated 8m tons of plastic pollution enter the world’s oceans every year.
The estimates do not take into account the direct and indirect impacts on the tourism, transport and fisheries industries, or on human health, the authors warned.
Plastic waste can be found all over the world – from the most populated coastlines to the most remote – and its impact on zooplankton, invertebrates, fish, turtles, birds and mammals is all negative, the study found. But authors discovered that plastics – which can remain buoyant for decades or longer, travelling distances of more than 3,000km from origin – create new habitats for bacteria and algae. These “colonies” increase the biogeographical range of bacteria and algae, thereby risking the spread of invasive species and disease, the research found.
Courtesy: theguardian.com
