EWINA_RICH : a database of EarthWorm native and alien species richness In North America

EWINA_RICH gathers data on observed and predicted native and alien species richness of earthworms species across geographical units of North America (Mexico, US and Canada), based on data from 1850 to 2021.

Please refer to [REF pub to update] for the details about the process to produce the predictions and the general interpretation of the results.

Data are given at two spatial resolutions

Data at resolution of counties or equivalent

EWINA_counties.geojson: Spatial layer of all counties or alike geographical units, with environmental covariates. Used to map geographical units and to predict RASR.

EWINA_2000_counties_obs.csv: Observed earthworm species richness and RASR (Relative Alien Species Richness) in the geographical units with earthworm data, since year 2000, together with the environmtal covariates. Used to fit the model. Use the GEOID field to merge with the spatial layer.

EWINA_2000_counties_pred.csv: Predicted earthworm RASR (Relative Alien Species Richness) and its uncertainty,  in all counties or equivalent, based on a model fitted on data after the year 2000. Use the GEOID field to merge with the spatial layer.

Data at resolution of  TDWG4 geographical units

see the Biodiversity Information Facility Website for more info about the definition of the geographical units

EWINA_TDWG4_aboveground.geojson: Spatial layers of TDWG4 geographical units, with above ground alien taxa richness from Dawson 2017 https://doi.org/10.1038/s41559-017-0186

EWINA_TDWG4_earthworms.csv: Observed earthworm native and exotic species richness in the TDWG4 units, data cumulated from 1850 to 2021.

All data files are provided with a readme file, with the suffix "_variables", that explains the meaning of the variables