US conservation efforts bring more marine turtles to UK

April 30, 2007

US and Mexican conservation efforts may have boosted the number of marine turtles visiting UK waters, according to a team from the University of Exeter’s School of Biosciences.

New research by the University of Exeter and Marine Environmental Monitoring, published in Marine Biology, analyses 100 years of data. It shows an increase in the number of loggerhead and Kemp’s ridley turtles in UK and French waters in the last twenty years. The research team believes this is most likely the result of protective measures put in place in the United States and Mexico.

‘The data tells the story of the interaction between marine turtles and humans over the last hundred years,’ said Matthew Witt a biologist on the University’s Cornwall Campus. ‘Following a severe decline as a result of human activity in the first-half of the last century, we can now see the positive effect that recent conservation efforts have had on these turtle species.’

A large majority of marine turtles that visit Northern European waters hatch in the Americas and can spend nearly four years travelling thousands of miles to British waters. Scientists do not know why some juvenile turtles make the journey to Northern Europe, but believe they may simply be driven by the North Atlantic current system.

The eggs of Kemp’s ridley turtles were harvested in huge numbers and the species reached near-extinction before protective measures began in the mid-1960s. Previously absent in UK waters since 1974, sightings of this species returned in the 1990s, which coincides with the increasing use of turtle excluder devices in shrimp nets in US and Mexican waters. Both species occurred in western parts of the UK and France, including a number of sightings off the coasts of North-West Scotland, Wales, Devon and Cornwall.

The decline of sea turtles has led to a global protection effort. Measures have included the introduction of turtle excluder devices in fishing nets and hatcheries to protect eggs.

Matthew Witt concludes: ‘The increase of turtles in the sea around the UK could be indicative of a global trend. We need more research to verify this, but the results from this study are very encouraging.’

Source: University of Exeter

Explore further: Fossil specimen reveals a new species of ancient river dolphin

Related Stories

Fossil specimen reveals a new species of ancient river dolphin

September 1, 2015

The careful examination of fossil fragments from Panama has led Smithsonian scientists and colleagues to the discovery of a new genus and species of river dolphin that has been long extinct. The team named it Isthminia panamensis. ...

Stinking mats of seaweed piling up on Caribbean beaches

August 10, 2015

The picture-perfect beaches and turquoise waters that people expect on their visits to the Caribbean are increasingly being fouled by mats of decaying seaweed that attract biting sand fleas and smell like rotten eggs.

Researchers discover a new deep-sea fish species

August 5, 2015

They are some of the most interesting and unique creatures in the oceans - deep-sea life. Most people can identify a shark or sea turtle or whale, but many are shocked to see what a lanternfish or oarfish looks like. Deep-sea ...

Recommended for you

Long-sought chiral anomaly detected in crystalline material

September 3, 2015

A study by Princeton researchers presents evidence for a long-sought phenomenon—first theorized in the 1960s and predicted to be found in crystals in 1983—called the "chiral anomaly" in a metallic compound of sodium and ...

Making nanowires from protein and DNA

September 3, 2015

The ability to custom design biological materials such as protein and DNA opens up technological possibilities that were unimaginable just a few decades ago. For example, synthetic structures made of DNA could one day be ...

Ice sheets may be more resilient than thought

September 3, 2015

Sea level rise poses one of the biggest threats to human systems in a globally warming world, potentially causing trillions of dollars' worth of damages to flooded cities around the world. As surface temperatures rise, ice ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.