Broughton, R.K.; Gerard, F.; Haslam, R.; Howard, A.S.
Woody habitat corridor data in South West England
Cite this dataset as:
Broughton, R.K.; Gerard, F.; Haslam, R.; Howard, A.S. (2017). Woody habitat corridor data in South West England. NERC Environmental Information Data Centre. https://doi.org/10.5285/4b5680d9-fdbc-40c0-96a1-4c022185303f
Download/Access
PLEASE NOTE:
By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.
© UK Centre for Ecology & Hydrology
This dataset is made available under the terms of the Open Government Licence
https://doi.org/10.5285/4b5680d9-fdbc-40c0-96a1-4c022185303f
This dataset contains polylines depicting non-woodland linear tree and shrub features in Cornwall and much of Devon, derived from lidar data collected by the Tellus South West project. Data from a lidar (light detection and ranging) survey of South West England was used with existing open source GIS datasets to map non-woodland linear features consisting of woody vegetation. The output dataset is the product of several steps of filtering and masking the lidar data using GIS landscape feature datasets available from the Tellus South West project (digital terrain model (DTM) and digital surface model (DSM)), the Ordnance Survey (OS VectorMap District and OpenMap Local, to remove buildings) and the Forestry Commission (Forestry Commission National Forest Inventory Great Britain 2015, to remove woodland parcels). The dataset was tiled as 20 x 20 km shapefiles, coded by the bottom-left 10 km hectad name. Ground-truthing suggests an accuracy of 73.2% for hedgerow height classes.
Publication date: 2017-03-21
View numbers valid from 01 June 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)
Format
Shapefile
Spatial information
Study area
Spatial representation type
Vector
Spatial reference system
OSGB 1936 / British National Grid
Temporal information
Temporal extent
2013-07-01 to 2013-08-31
Provenance & quality
The output data product has been ground truthed, suggesting an accuracy of 73.2% between field survey and modeled heghts of hedgerows (see documentation). The dataset has not been exhaustively checked for all errors. Extensive manual checking (comparison to aerial imagery) removed obvious anomalies, but many are likely to be remaining. Particular issues with misclassification of features at the coast resulted in all features within a 50 m buffer of the high water mark being removed. Some areas of tall in-field crops are probably also present as apparent low scrub, and difficulty in rendering very irregular patches of trees and scrub have created very dense or very simplistic areas of polylines.
Licensing and constraints
This dataset is made available under the terms of the Open Government Licence
Cite this dataset as:
Broughton, R.K.; Gerard, F.; Haslam, R.; Howard, A.S. (2017). Woody habitat corridor data in South West England. NERC Environmental Information Data Centre. https://doi.org/10.5285/4b5680d9-fdbc-40c0-96a1-4c022185303f
© UK Centre for Ecology & Hydrology
Related
Citations
Broughton, R.K., Chetcuti, J., Burgess, M.D., Gerard, F.F., & Pywell, R.F. (2021). A regional-scale study of associations between farmland birds and linear woody networks of hedgerows and trees. In Agriculture, Ecosystems & Environment (Vol. 310, p. 107300). Elsevier BV. https://doi.org/10.1016/j.agee.2021.107300
Correspondence/contact details
Broughton, R.
UK Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM
enquiries@ceh.ac.uk
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM
Authors
Haslam, R.
British Geological Survey
Howard, A.S.
British Geological Survey
Other contacts
Rights holder
UK Centre for Ecology & Hydrology
Custodian
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
info@eidc.ac.uk