Travers, T.J.P.; Alison, J.; Taylor, S.D.; Crick, H.Q.P.; Hodgson, J.A.

Evaluation of national scale, long-distance connectivity (and its protection) in England’s priority habitat inventory - 2015 dataset

The results of an analysis of the connectivity of sixteen priority habitat networks in England using the Condatis methodology. The dataset includes conductance scores for each of the priority habitat networks (an overall assessment of how connected the habitat network is), the flow scores for each contiguous habitat patch within each of the habitat networks (the importance of that patch to connectivity), as well as details of protection. Additionally, the dataset includes data and scripts needed to run a demonstration Condatis analysis, and produced the figures used in Travers et al., 2021 (in prep.).

Dispersal distances of 2, 4 and 8 km were used as inputs into Condatis. The outputs of connectivity assessments using those dispersal figures were geometrically averaged to provide results summing up the connectedness of a habitat network over a range of dispersal abilities. To determine how much connectivity (flow), and which patches were protected in each habitat network they were overlaid with SSSI and NNR spatial data. If more than 50% of a patch’s area was covered by a protected area it was determined to be protected.

Publication date: 2021-07-30

Get the data

This dataset is available under the terms of the Open Government Licence

This data is available as Comma-separated values (CSV), TIFF or Shapefile

You must cite: Travers, T.J.P.; Alison, J.; Taylor, S.D.; Crick, H.Q.P.; Hodgson, J.A. (2021). Evaluation of national scale, long-distance connectivity (and its protection) in England’s priority habitat inventory - 2015 dataset. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/a715112e-08ae-4d6e-943a-77933fd5ddd1

 

Where/When

Study area

Provenance & quality

The priority habitat inventory, SSSI and NNR data were downloaded from the Natural England geoportal. Connectivity analysis was conducted with the Condatis method, using dispersal distances of 2, 4 and 8km, the outputs of which were then geometrically averaged. Habitat patches were deemed to be protected if >50% of their area was covered by a SSSI or NNR. Results determined to have arisen due to arithmetic underflow were removed from the analysis prior to summary steps.

Supplemental information

Condatis is a decision support tool to identify the best locations for habitat creation and restoration to enhance existing habitat networks and increase connectivity across landscapes.

Correspondence/contact details

Tom Travers
University of Liverpool
 T.Travers@liverpool.ac.uk

Authors

Travers, T.J.P.
University of Liverpool
Alison, J.
UK Centre for Ecology & Hydrology
Taylor, S.D.
Natural England
Crick, H.Q.P.
Natural England
Hodgson, J.A.
University of Liverpool

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk

Additional metadata

Topic categories
Biota
Keywords
Circuit theory,  Condatis,  Connectivity,  Dispersal,  National Nature Reserves,  NNR,  Range-shifts,  Site of Special Scientific Interest,  SSSI
INSPIRE Theme
Environmental Monitoring Facilities
Spatial representation types
Vector
Tabular (text)
Raster
Spatial reference system
OSGB 1936 / British National Grid
Last updated
18 May 2022 12:21