developing the gloucestershire nature recovery network€¦ · dr juliet hynes. what is a nature...
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Developing the Gloucestershire Nature Recovery Network
Dr Juliet Hynes
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What is a Nature Recovery Network?
Network to complement and connect our best wildlife sites, and provide opportunities for species conservation and the reintroduction of native species.
Is a joined-up network of habitats that allow wildlife and people to thrive
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Why do we need it?• Ecologically:
• Experienced massive habitat fragmentation – vulnerability.
• Increase resilience of habitats and species.
• Populations in small areas of habitat will not survive in isolation.
• Need an ecologically functional network of sites to maintain biodiversity and therefore ecosystem services which it underpins.
• Legislatively:• National Planning Policy Framework.
• 25 year environment plan.
• Environment Act – 2020?
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Uses – what the local NRN can help inform:
• Planning policy and net gain options
• Design of major infrastructure projects in the county
• Biodiversity offsetting locations
• Agri-Environment (ELMS) targeting
• Biodiversity project prioritisation and partnership development
• A Local Nature Partnership led Natural Capital Investment fund
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Gloucestershire Nature Recovery Network
Assess current state of network and identify priority areas for restoration and reconnection of habitat by combining:
• Four ecological networks
• Constraints and opportunities
• Prioritisation - resilience and coherence measures
Core habitat patchCore network = current connectivity
Landscapematrix
Restoration zone
Network components
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Ecological network mapping – 4 networks
• Open habitats (core habitat = neutral, calc, acid grassland, heathland)
• Wooded habitats (core habitat = Woodland, Wood Pasture & Parkland, Traditional Orchard).
• Water and wetland (core habitat = ponds, rivers, bog, fen etc., wet heath and wet grassland)
• Arable (core habitat = field margins, arable weeds, farmland birds,)
• Generic Focal Species (define min habitat patch size and max dispersal distance)
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Dispersal distance/ecological cost = movement distance
• High permeability land use:
500m/1 =500m
• Low permeability land use:
500m/50 = 10m
Connectivity - Cost distance analysis
Map includes data derived from: LCM2015 Vector (GB) (c) Crown copyright and database rights 2019 Ordnance Survey License Number 1000046783
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Map includes data derived from: LCM2015 Vector (GB) (c) Crown copyright and database rights 2019 Ordnance Survey License Number 1000046783
![Page 9: Developing the Gloucestershire Nature Recovery Network€¦ · Dr Juliet Hynes. What is a Nature Recovery Network? Network to complement and connect our best wildlife sites, and provide](https://reader035.vdocuments.mx/reader035/viewer/2022070909/5f9214fd932b686ed70d849f/html5/thumbnails/9.jpg)
Network Resilience metricHigher Resilience
Lower Resilience
Resilience and coherence metrics based on work by Forest Research: Moseley et al. (2015). Evaluating the Functionality of Ecological Networks in the Brue Valley Living Landscape through the Assessment of Ecological Coherence and Resilience.
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Restoration/creation opportunities
Raster addition of constraints and opportunities giving heat map of areas suitable for restoration/creation
Glastir woodland creation opportunities map guidance 2014-2020, WAG
• Positive/negative ownership• Habitat suitability (priority habitat or other)• Ecological network connectivity maps • Low input permanent pasture• Agricultural land grades• Soil type/topography/hydrology• Heritage sites
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From ecological networks to an NRN
Nature Recovery Network
Map
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Open Habitats Network
Wooded Habitats Network
Water and Wetland Network
Arable Network
Delivery plans:
Local Nature
Recovery Strategy
Data update
Impact reporting
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Core habitat (protection and condition):Statutory protection and Planning policyBiodiversity projectsELMs Agri-environment
Core network (current connectivity zones) - no reduction in resilience, aim to increase resilience where it is low: Implementation of net gainBiodiversity projectsELMs Agri-environment
Restoration zones:Sites for targeting biodiversity offsetting (biodiversity allocations) Large scales biodiversity projectsELMs Agri-environment
Wider Landscape – improve permeability e.g. through net gain and ELMs
Delivery mechanisms
Natural Capital Tool
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NRN should enable nature’s recovery by restoring ecological processes
• Better quality habitat
• Bigger habitat patches
• More and more joined – functionally connected
• Increase the permeability of the wider landscape.
• Not stop at the county border.
• Updatable
• Repeatable metrics – can assess change
(c) Crown copyright and database rights 2019 Ordnance Survey License Number 1000046783