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24 April 2019 The on-line newspaper devoted to the world of transports 23:53 GMT+2



March 19, 2019

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Original news
A study evidences that the increase of the marine transport could cause a strong increase of the invasive spread of species

Leung (McGill University): political initiatives as the international Convention for the control and the management of the ballast water goes in the right direction

A study of investigators of the McGill University di Montreal signals that in next the 30 years the increase of the marine traffic could determine a strong increase of the invasive spread of species in all the seas of the world. According to the Global study "forecasts of shipping traffic and biological invasions to 2050", whose turned out "Sustainability Natures" are published on the magazine, in the next decades the increment of the marine transport will by far exceed the climatic change which carrier of spread of injurious organisms alloctoni in other ecosystems.

The study remembers that the marine transport enlivens 80% of world-wide the commercial exchanges and that considers that from 60% to 90% of the bioinfestazioni of the oceans is chargeable to the marine transport, with organisms that are transported by a sea to another in ballast waters of the ships or with species that move in new atmospheres attacking itself to the hulls of the ships.

"He considers himself - he has explained one of the authors of the study, Brian Leung, that is university professor associated near the department of Biology and environmental engineering of the McGill - than the biological invasions they have an important role in the changes of the biodiversity and cause every year you damn economic for billions of dollars. Our models demonstrate that the widening of the net of marine transports could carry from here to 2050 to an increase from three to 20 times of the risk of marine invasions to total level". "Our study - it has added to Anthony Sardain, graduate student near the laboratory lead from Leung to the McGill - suggests that, unless adapted measures are not adopted, an exponential increase of such invasions, with potential can be previewed enormous ecological and economic consequences".

However the study emphasizes moreover that, fortunately, the risks of an increase of the cost of the damages caused from these biological invasions are recognized and are assumed important political initiatives as the international Convention for the control and the management of the ballast water and sediments of the ships, that has taken effect in 2017 and that represents the most recent total effort in order to control the bioinvasioni. "Even if it is too soon in order to estimate the effectiveness of the Convention to total level - it has observed Leung - our job suggests that this goes in the right direction".

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