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The Government has reformed the planning system to include ecological sustainability into the planning and development management process.

The National Planning Policy Framework requires local planning authorities to plan strategically for nature and biodiversity. They must identify and protect ecological networks.

Ecological networks are the basic, joined up infrastructure of existing and future habitat needed to allow populations of species and habitats to survive in fluctuating conditions. As a short term benefit, a landscape that species can move through easily allows re-colonisation of areas after disturbance events, preventing local extinctions.

In the long term, as our climate begins to change, well connected habitats offer opportunities for populations to move as conditions become more or less suitable. The movement of individuals between populations in a connected landscape maintains genetic diversity which allows populations to adapt to future changes in environmental conditions.

Somerset’s strategic ecological networks

Somerset’s strategic ecological networks have been produced for four broad habitat types in Somerset:

  • Broad-leaved woodland
  • Priority grasslands (including calcareous, acid and neutral grassland)
  • Heathland and acid grassland
  • Fen, marsh and swamp

The networks were created using the Biological and Environmental Evaluation Tools for Landscape Ecology , a least-cost network model developed by Forest Research with the parameters of the model based on the requirements of Somerset Priority Species for the minimum area needed to maintain a healthy population and typical dispersal distances.

The make-up of Somerset’s Ecological Network should be viewed in combination with data that is likely to influence the ecological network. The ecological networks are fragments of what was once a much larger network, and as a minimum every effort should be made to maintain what remains in line with national and locally adopted policy.

Somerset’s ecological network will continue to be updated as new data becomes available that will contribute to the mapping and evaluation of the networks currently identified.

Who can use it

Under the provisions of the National Planning Policy Framework, ecological networks are required to be included in local plans.

The local plans for Somerset Council include the Waste and Mineral local plans.

As well as planning, the ecological network can inform the management of green spaces in urban areas. It can also inform the location of any replacement habitat arising from the Somerset Habitat Evaluation Procedure applied to development sites.

National Planning Policy Framework

The National Planning Policy Framework states that local authorities should take a strategic approach to biodiversity. Local Plan policies should

  • plan for biodiversity at a landscape-scale across local authority boundaries
  • identify and map components of the local ecological networks
  • promote the preservation, restoration and re-creation of priority habitats, ecological networks
  • promote the protection and recovery of priority species populations

Biodiversity 2020: A strategy for England's wildlife and ecosystems services

Biodiversity 2020 details a strategy for delivering the Government’s natural environment policy. It includes a commitment to ‘…take a strategic approach to planning for nature’ through reform of the planning system (see National Planning Policy Framework) whilst still retaining ‘…the protection and improvement of the natural environment as core objectives of the planning system.’

Biodiversity 2020 also features a number of Priority Actions. Which include to ‘establish more coherent and resilient ecological networks on land that safeguards ecosystem services for the benefit of wildlife and people’.

Last reviewed: May 16, 2024 by Daniel

Next review due: November 16, 2024

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