Table 2. Goodness-of-fit statistics of six different equations fitted to aboveground biomass as a function of basal diameter for mesquite trees of northern arid and semi-arid forests of Mexico.

Author	Original equations		Original equations		New set of parameters
	N = 206		N = 510		N = 510
	R2	Sx (kg)	R2	Sx (kg)	R2	Sx (kg)
West, Brown & Enquist (1999)	0.89	24	0.96	35	0.96	35
Návar (2010)	0.85	28	0.96	33	0.96	33
Conventional	0.89	24	0.95	38	0.96	35
Jenkins et al. (2003)	0.78	34	0.70	91	0.70	91
Modified conventional	0.88	26	0.84	65	0.96	34
Chojnacky, Jenkins & Heath (2014)	0.90	23	0.95	37	0.90	53