Keystone Ecology
Keystone Habitats
Keystone – making ecology our business
Keystone Marine
Our marine ecological consultancy services include seabed, intertidal and sub-tidal surveys, seabed sampling, biotope surveys and mapping, marine mammal and bird surveys, plankton, fish and benthic surveys, GIS Mapping, Ecological Impact Assessment and the design and implementation of Mitigation, Monitoring and Management Plans.













Dormouse Bridge Design and Installation
Ward Homes
Keystone Habitats implemented all licensed mitigation works for Dormouse at a proposed housing development in Maidenhead.
To maintain favourable conservation status of the resident Dormouse population we carried out:
Hedge laying was timed to avoid impacts to Dormice.
The Dormouse bridge was constructed from light gauge, galvanised steel mesh tubes, linked together to form a tunnel, which was suspended on tensioned parallel steel cables supported by two telegraph poles. To simplify the installation process a modular bridge was fabricated. To make the tubes functional for Dormice they were filled with a variety of native climbing plants.