Aboveground net primary production (ANPP)


Typical of other arid and semiarid ecosystems, ANPP and biodiversity at the JRN are (a) temporally variable within each location, and (b) spatially variable across the landscape (mean + SE over time within a period. G=upland grasslands; P=playa grasslands; C=creosotebush shrublands; M=mesquite shrublands; T=tarbush shrublands. Dry=dry period 2000-2003; no trend=1990-1999, 2009-2012); wet=wet period 2004-2008. In panel (b) different letters indicate significantly different means.