A three-year project, led by the University of Plymouth, will investigate the movement of common dolphins throughout the year and assess how much noise they are exposed to from passing vessels 2.25 MB A three-year project, led by the University of Plymout
Researchers are launching a major new study to understand how underwater noise pollution from ships could be impacting common dolphins and harbour porpoises in the English Channel.
The three-year project, led by the University of Plymouth, will investigate the species’ movement throughout the year, and assess how much noise they are exposed to from passing vessels.
Those behind the project hope it will provide vital new evidence that supports the species’ conservation in the Western English Channel and that the results will inform management of noise pollution exposure for these species throughout UK waters and improve our understanding of one of the least visible forms of marine pollution.
Supported with a grant of more than £250,000, the project builds on a decade of work by scientists and students from the University, including regular cetacean surveys along the coasts of Cornwall.
The new project will enable them to expand the scope and methods of that work while also taking in a far greater area, stretching from the Isles of Scilly to the Sussex coast and to conduct surveys throughout the year.
The project team includes Associate Professor of Marine Conservation, Dr Simon Ingram, and Associate Professor of Marine Ecology, Dr Clare Embling. Research Assistant Ms Beth Harvey will lead much of the fieldwork and data collection.
They will be supported by an expert advisory group including representatives from: Natural England; Joint Nature Conservation Committee (JNCC); the Centre for Environment, Fisheries and Aquaculture Science (CEFAS); and The Wildlife Trusts.

This project is a fantastic opportunity for us to build on previously unfunded survey work we have been conducting in the English Channel to map the distribution of marine mammals. It will enable us to make a vital contribution to our understanding of the impacts of noise pollution on vulnerable species of dolphin and porpoise living in our coastal waters.

Simon IngramDr Simon Ingram
Associate Professor of Marine Conservation

Over the coming two years, the research team will undertake 20 dedicated surveys covering coastal waters up to six nautical miles offshore.
Trained observers will search for animals at the sea surface, while hydrophones – special underwater microphones towed behind the research vessel – will detect the clicks and whistles produced by the mammals beneath the waves.
Combining these observations with computer models that map underwater sound will produce the most detailed picture to date of how ship noise overlaps with the seasonal movements of these species.
The researchers hope the information will be used to inform future conservation and management, while the methods developed through the project could also be applied in other parts of the UK to help monitor the impact of underwater noise on marine wildlife.

Underwater noise generated by ships and other vessels is an increasing pressure on dolphins and other cetaceans. Chronic noise can elevate stress, interfere with communication and feeding and cause dolphins to avoid critical habitats. With the English Channel being one of the world’s busiest shipping routes, understanding these impacts is essential to help inform conservation and management.

Clare EmblingDr Clare Embling
Associate Professor of Marine Ecology

The project is one of 130 being supported by funding from Natural England’s Species Recovery Programme as part of the government's Wild Again: Restoring England's Wildlife initiative.
The largest ever investment in recovering the country’s threatened plants, animals and fungi, it will see £60million spent on projects involving 364 threatened species.

For decades Natural England's vital species recovery work has revealed how even the rarest of the rare can be brought back from the brink. The red kite, lady's slipper orchid, pool frog, beaver and large blue butterfly are among examples that demonstrate the many opportunities at hand and what can be achieved for nature and wider society. We know that good science and effective partnerships can help restore species to favourable status, and this funding will enable us to support many initiatives to help halt and reverse the decline of our wonderful wildlife.

Tony Juniper
Chair of Natural England and a recipient of the  University of Plymouth honorary doctorates