Scientists have recently discovered crust of plastic particles that were forming up on shoreline rocks. This ‘plasticrust’ is a huge threat to the creatures inhabiting on rocks and there could also be a possibility of plastic entering into their food chain. The study was published in Science of the Total Environment.
A Marine and Environmental Sciences Centre (MARE) team from Portugal has been observing the building up of plastics across the shore of the volcanic island of Madeira by evaluating their impact on the local ecosystem since 2016. Ignacio Gestoso, a marine ecologist said that the crusts are developed due to the crashing of large pieces of plastics against the rock shores similar to how algae or lichens do.
The plasticrust looks similar to a chewed piece of gum or a squeeze of toothpaste on the rocks and their shape is similar to that of inhabitants on the rock and this way the plastic is fixing itself into the environment. Several researchers like Gestoso are researching on the reason behind its formation and their effects and thus it was discovered that they are formed due to the usage of polyethylene, the material found in plastic bags and food packaging. Now according to the scientists, this polyethylene which is sticking to the shoreline covers nearly about 10 percent of the surface of the rock.
The researchers and their team also discovered a proof which shows that the winkle sea snails which eats algae are as comfortable being in the plasticrust as they are on the rocks and thus they might be sucking the plasticrust and the algae on the rock as well. As of now, the researchers just want us to make aware of this problem. If we don’t reduce the usage of plastics then the rocks which are getting covered by plastics will bring serious issues to the microorganisms.
However, sadly this is not the first time this has occurred. In the year 2014, there was a discovery of plastiglomerates which is a substance similar to rock made from melted plastics and organic debris. The scientists say that plastic is hugely used and if it continues this way then we’ll leave huge sediments of plastics for the future generation. Gestoso told that he, as a marine ecologist researcher would like to choose to report about other types of discoveries than describing a sad new way of plastic pollution in his research paper.