Translocation of Rare Moth Habitat

As part of the installation of a new dive under railway tunnel, it was required to move rail lines across onto the route of a watercourse (Brook Drain North). The project team therefore constructed an upgraded river section to replace this loss, with the installation of a 840 metre long, four metre deep open engineered earth channel.

During pre-construction ecology surveys, it was identified that a very rare species of moth, the Four Spotted Moth, inhabited the banks of the old Brook Drain.

The team therefore engaged a local Zoologist with a specialist interest in moths. Under his guidance, a landscaping turf stripping tool which attaches to an excavator was sourced, and the topsoil and vegetation was removed from the old brook and translocated across to the banks of the new brook. This work prevented the loss of this specialist moth habitat, and enables the Four Spotted Moth population to establish a population on the newly constructed river banks.

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Entry submitted by Morgan Sindall


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