The objective of this study was to quantify net primary productivity as a function of rainfall in mesic to wet montane rainforests in Maui, Hawaii. The Maui Moisture Gradient is a sequence of 6 sites located on the island of Maui that range from 2200 mm to 5050 mm mean annual rainfall, while temperature and all other state factors (parent material, substrate age, organisms, and topography) that control NPP remain relatively constant. This data set...