Tubes made from sisal have been used to dam burns to waterlog areas of peat, improving the quality of the soil.

Sphagnum moss which grows on healthy peat helps to naturally control harmful greenhouse gases by absorbing carbon dioxide from the air.

The sisal tubes, which are filled with loose peat, biodegrade.

Shetland Amenity Trust has been pioneering the use of sisal, according to Scottish Natural Heritage.