Processed Novelty Layers for Climate, Defaunation, Floristic Disruption, and Total Novelty Exposure, from Kerr et al 2025 "Widespread Ecological Novelty Across the Terrestrial Biosphere"

The four raster files contain scaled (0-1) novelty values for three novelty drivers (climate, defaunation, floristic disruption) and one combined "total novelty exposure" (unweighted average of the three drivers) from Kerr et al (2025). These make up extended data figures 1 and 3a-c and are used within the analysis for the paper. The rasters are in a 10x10km resolution covering terrestrial cells only, and are projected on an equal area Mollweide projection ("+proj=moll +lon_0=0 +x_0=0 +y_0=0 +ellps=WGS84 +datum=WGS84 +units=m +no_defs"). See Kerr et al (2025, Nature Ecology and Evolution, https://doi.org/10.1038/s41559-025-02662-2) for the full methodological details and underlying open-access data.

In summary, the climate change layer measures the most recent 300-year period for which palaeoclimate is outside the modern range, for temperature and precipitation, using data from CHELSA and CHELSA-TrACE21k. The defaunation layer measures the log loss in body mass and species richness of mammal fauna, using the predicted "present natural" values from the PHYLACINE atlas of mammal macroecology. The floristic disruption layer firstly measures the proportion of non-native alien plants present in GBIF records, assessed using country level checklists from GRIIS, and secondly uses a modified BII (from Newbold et al 2016, accessed at https://zenodo.org/records/6348164), taking the absolute difference from 1. The value used in the final rasters is the unwighted average of the two individual metrics for each layer.

If you use this data in any form, please cite both this dataset and the original publication.