Table 1. Overview of bioclimatic definitions (Murphy and Lugo, Food and Agriculture Organization of the United Nations [FAO], DryFlor, Aridity Index) of the tropical dry forest biome.

Bioclimatic Definition	Source	Annual Precipitation, Dry Season
Murphy and Lugo	Murphy and Lugo 1986	250–2000 mm, 4–7 months ≤100 mm
FAO	Sunderland et al. 2015	500–1500 mm, 5–8 months ≤100 mm
DryFlor	Banda et al. 2016	≤1800 mm, 3–6 months ≤100 mm
Aridity Index*	Bastin et al. 2017	0.2 < aridity index < 0.65

* Calculated by taking the ratio of mean annual precipitation to potential evapotranspiration.