Scotland's largest conservation charity is set to make 90 members of staff redundant as part of a major restructure.

The National Trust, the custodian of historic properties and sites across the country, said the job losses were part of a wider project aiming to widen its appeal.

In June, the organisation revealed proposals to place 142 staff at risk of redundancy.

However bosses said on Wednesday that it had reduced that number to 90 following a consultation.

"At risk" staff will be invited to apply for new posts within the revised structure in the coming weeks.

The trust said it was keen to widen its appeal, encourage more people to visit its sites and increase membership to help generate more income for conservation projects.

Chief executive Simon Skinner said: "We would like to thank everyone who responded to our proposals and who made such useful and thoughtful submissions.

"In particular I welcome the constructive part that the Prospect union has played throughout the consultation.

"It was clear that the need for change was fully endorsed and, as a result of the information and practical suggestions received, we have made changes to our proposals that enhance the programme we are now enacting."

He said the changes would allow the trust to retain a "core staff of specialists" to support conservation and visitor services.

Mr Skinner said a new regional structure will also be set up to put its properties "firmly at the centre of decision-making and planning".

The trust - which looks after historic properties including Brodie Castle in Moray and natural sites such as the Burg nature reserve on the Isle of Mull - will also trim down its seven central directorates and departments to four.

He added: "More efficient ways of working will complement other sources of funding so that we can prioritise £17m of investment to make our properties better.

"We have already announced the first tranche of investment in Culzean Castle and Country Park totalling £2.5m and there is more to come."

Mr Skinner added: "It is inevitable that we will be losing some people through the changes but we hope that as many as possible can find roles in the new structure. It will be a difficult time for some and we will offer as much support and help as we can."

The restructure is due to be completed by the summer of 2017.