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Increase in traffic means at-risk sea life

At-risk sea life in the Atlantic needs better protection from an increase in shipping

MARPRO Send an email June 15, 2022
902 3 minutes read

 

New research from the University of Portsmouth has shown a dramatic increase in shipping in the North East Atlantic.  Scientists now warn that more monitoring in the area is required to help protect sea life on the at-risk register.

Researchers at the University of Portsmouth have discovered that rates of shipping in the North East Atlantic area rose by 34 per cent in a five-year period. Even more noticeable, and of major concern to scientists, is the rate of shipping growth in Marine Protected Areas. Analysis of vessel movements in these delicate environments shows an increase of 73 per cent in the same time period.

The report, which was published in Marine Pollution Bulletin, is the first detailed survey of shipping activity in the North East Atlantic. Researchers used data from over 530 million  vessel positions recorded by Automatic identification Systems (AIS). They looked at the change in shipping between 2013 and 2017 across ten distinct vessel types. In total the study area covered 1.1 million km2, including waters off Belgium, Denmark, France, Germany, Iceland, Ireland, The Netherlands, Norway, Portugal, Spain, and the UK

Lead author, James Robbins from the Institute of Marine Sciences at the University of Portsmouth, said: ”This change is likely to put more pressure on the marine environment, and consequently may have implications for the conservation of exposed and at-risk species. Renewed monitoring effort is needed to ensure that protective measures are adequate to conserve species under threat in a changing environment, where the footprint of human activities is expanding.”

This increase in traffic in marine protected areas, may have implications for the very species that these areas are designated to protect. Shipping can have a wide variety of impacts on the marine environment, with some of the strongest concerns related to the spread of non-indigenous species, noise, chemical, and air pollution, collisions with wildlife, and marine litter.

Shipping has been found to be a likely method of unintended movement for more than half of non-indigenous species in European waters (Katsanevakis et al., 2013). Once introduced, the species can become established and invasive, often having a negative impact on the ecosystems they invade. Invasive species are recognised by the Convention on Biological Diversity as one of the biggest threats to global biodiversity.

Dr Sarah Marley, Visiting Researcher at the University of Portsmouth and Lecturer at Scotland’s Rural College, said “Shipping is the most widespread human activity in our oceans, carrying a multitude of threats – from subtle impacts like underwater noise pollution to dramatic outcomes when ships hit whales. We need to understand when and where shipping occurs in order to best mitigate these risks”.

Some of the greatest shipping increases were found in areas close to the Spanish coast. The Espacio Marino de la Costa da Morte saw a rise of 413 per cent in vessel activity. It is an area designated to protect seabirds. Several areas surrounding the Hebrides off the west coast of Scotland also saw increases in shipping. There was a growth of 463 per cent around the Inner Hebrides and the Minches, a zone designated to protect harbour porpoises. The Vadehavet med Ribe Å, Tved Å og Varde Å vest for Vard off the coast of Denmark, where fish, seals and harbour porpoises are protected saw a 443 per cent increase in ship movements.

Researchers at the University of Portsmouth are calling on policy makers to closely monitor shipping increases. They believe that as human population growth drives further development and international trade, it is likely that shipping will continue to intensify. Current predictions are for a global increase of between 240 per cent and 1209 per cent by 2050.

Professor Alex Ford, from the University’s Institute of Marine Sciences, said: “Given the well-documented impacts that shipping can have on the marine environment, it is crucial that this situation continues to be monitored – particularly in areas designated to protect vulnerable species and ecosystems which may already be under pressure.”

This article is shared by courtesy of University Of Portsmouth – www.port.ac.uk – University of Portsmouth are excel in research areas from cosmology and astrophysics to cyber security, forensics and sport science. Since the first day we opened our doors, we’ve looked towards the future.

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MARPRO Send an email June 15, 2022
902 3 minutes read
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