Figure 3: The rain-fed maize agricultural niche in AD 1247.
From: A 2,000-year reconstruction of the rain-fed maize agricultural niche in the US Southwest

The upper panels represent the VEPIIN study area; the lower panels represent VEPIIS. Each panel’s colour gradient breaks at the extent of that signal’s agricultural niche. Thin black lines are at the upper and lower prediction intervals. Scale bar: 10 km. (a,b) Net water-year precipitation, green portion in niche. (e,f) Growing-season GDDs, red portion in niche. (c,d) The rain-fed maize agricultural niche, light green portion in upper PI, medium green portion in niche, dark green portion in lower PI. Supplementary Movie 1 presents the full 2,000-year reconstruction.