Select climatic data
From Csegro et al. 2017 :
"We selected a limited set of eight environmental predictors for all species, commonly used in distribution models for plant species:
- annual mean temperature,
- temperature seasonality,
- mean temperature of warmest quarter,
- mean temperature of coldest quarter,
- precipitation seasonality and
- precipitation of wettest quarter, extracted from the WORLDCLIM – Global Climate Data portal (http://www.worldclim.org/bioclim; Hijmans et al. 2015) and
- annual and seasonality (standard deviation of monthly values) of global potential evapotranspiration, extracted from the CGIAR Consortium for Spatial Information ( http://www.cgiar-csi.org/data)."