Aboveground Net Primary Productivity across inter-annual precipitation variability treatments at a grassland site in the Jornada Basin, 2009-ongoing

This ongoing dataset contains annual aboveground net primary productivity (ANPP) estimates from a study at the Jornada Experimental Range (JER) in southern New Mexico. The study was designed to assess the effect of interannual variability in precipitation on average aboveground net primary productivity (ANPP) in Chihuahuan Desert grasslands. The study began in 2009, has five annual precipitation treatments, and contains 50 plots (10 per treatment). Precipitation treatments are 1) ambient precipitation, 2) alternating +50% and -50% precipitation, 3) alternating -50% and +50% precipitation, 4) alternating + 80% and -80% precipitation, and 5) alternating -80% and +80% precipitation. Ambient precipitation plots serve as controls and have no water manipulation. ANPP estimates are derived from vegetation cover measurements.