A protected species-rich grassland is to get a boost thanks to sheep grazing in North Wales.

Natural Resources Wales (NRW) has completed a significant 1,200m fencing project at Bwrdd Arthur Site of Special Scientific Interest (SSSI), a prominent limestone hill on Anglesey that features an iron age hillfort.

The grassland, which is home to common rockrose, hoary rockrose and ivy broomrape, has been found to be 'unfavourable and declining'.

The new fencing allows for controlled grazing, prevent scrub growth and ensuring the preservation of open habitats, key for the recovery of species and the fostering of biodiversity.

Hoary rockrose and ivy broomrape are among the species expected to recover.

Some of the fencing that has been put in place   (Image: Natural Resources Wales)

Huw Jones, NRW’s Environment team leader for Mon and Arfon, said: "We are pleased to be working with the landowner on this project which will deliver multiple benefits.

"Limestone grassland is one of the rarest, most diverse and species-rich habitats we have in Wales.

"Grasslands like these are good carbon stores and when managed carefully, lock in carbon and boost biodiversity.

"We have lost a significant amount of species-rich grassland in the UK, so managing these areas well is a priority."

Mr Jones added: "Effective grazing is a fantastic alternative to using machinery, saving time, cost and the use of fossil fuels and will help maintain open habitat, allowing it to recover where it had previously been covered by gorse or scrub.

"Ensuring this site, which is close to other limestone sites, is in good condition, will help the resilience of the ecosystem and species it supports, contributing to the resilience of Wales’ natural environment as a whole."

Bwrdd Arthur is highly significant not just for its biodiversity, but also as one of the largest and best-preserved ancient hillforts on Anglesey.