Methodology
A simplistic binary characterisation of habitat and non-habitat with a focus on change in habitat extent has dominated conservation assessments across different spatial scales. We developed an intactness metric captures both habitat loss, quality and fragmentation effects and is calculated using continuous measures of habitat quality. Applied at a global scale using 1 km^2 resolution data in order to quantify changes in intactness of the world's terrestrial ecoregions over a 16 year period
Data description
This datasets consists of: (1) intactness scores for the world's terrestrial ecoregions in 1993 and 2009, recorded as a comma delimited text file, and as attribute fields in a terrestrial ecoregion polygon shapefile (Ecoregions2017_intactness.shp); and (2) two raster datasets representing derived intactness metrics (Q' and delta Q') for terrestrial areas at a 1 km resolution. To reduce file sizes the values in both rasters are multiplied by 1,000 and rounded to integers. Users should divide the values in each raster by 1,000 to recover the original scale of these variables. Spatial data - vector polygons
Spatial data - raster
Tabular - comma delimited text file
Spatial data - raster
Tabular - comma delimited text file
Indicator
Potentially disappeared fractions of species (PDF) - Freshwater ecotoxicity
Method / tool
MariLCA