Ecosulis
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Case Studies

Tourism & Leisure

Project Name:
Lewannick Pond, Trelaske Wood, Cornwall
Client:
Woodlands.co.uk
Year:
Jan 01, 2015
Keywords:
Habitat creation, biodiversity enhancement, lake restoration, woodland planting
Summary:
Ecosulis were ask by the Woodlands to conduct an initial assessment of the pond to determine restoration potential and enhancement works of the lake and ...

Ecosulis were ask by the Woodlands to conduct an initial assessment of the pond to determine restoration potential and enhancement works of the lake and re-connect it to an existing spring. Following the assessment we were commissioned to undertake lake-enhancement works, which involved the following: excavation of the lake area to create a lake 1.5m deep with gentle sloping banks and an island. The excavations re-established a connection to the historical spring. The lake was allowed to re-fill naturally from run-off.

An excavator was used to remove the silt and underlying soils to deepen the pond further. Soil was stockpiled close to the new edge of the pond to allow any resident invertebrates to find the new habitat. The excess soil was then used to create the central island that would provide safe refuge for wildfowl. The top soil containing the seed bank was then distributed around the edges of the lake for native woodland plant species to thrive.

The clay layer from the lake bed and banks was spread out and re-profiled to provide a bund around the new, larger pond. Stockpiled soils were used to create ridges and troughs in the new marginal sections. Root protection zones were respected in the pond excavation works and created a more natural feel to the perimeter.

A Panoramic view of the newly re-profiled pond and areas (dark soil) to be planted with native woodland mix.

Log piles/hibernacula were created on the site out of the timber created from tree clearance operations. These were placed strategically around the new lake to provide excellent refuge for small mammals and amphibians.

 

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