Above- and belowground tree biomass models for three mangrove species in Tanzania: a nonlinear mixed effects modelling approach

Table 6 Aboveground tree component biomass models

Component	Model form	Model category	Model type	n	Parameter estimates				RMSE (%)	MPE (%)	AIC	Model
Component	Model form	Model category	Model type	n	β ₀	SE_β0	β ₁	SE_β1	RMSE (%)	MPE (%)	AIC	Model
Leaf	3	Fixed effects	Common	55	0.91766^NS	0.64173	1.04996^c	0.20549	62.1	8.2	367.8	CFE1
Twig	3	Fixed effects	Common	55	0.83391^NS	0.65931	1.35324^c	0.23032	68.2	8.7	496.9	CFE2
Branch	3	Fixed effects	Common	55	0.05140^NS	0.05060	2.28062^c	0.27769	78.0	−8.4	598.5	CFE3
Stem	3	Fixed effects	Common	55	0.24370^a	0.11111	2.06187^c	0.13711	49.9	−11.4	641.2	CFE4

SE standard error of a parameter estimate, NS not significant at 5 %, n sample sizes
^aSignificant at 5 %
^bSignificant at 1 %
^cSignificant at 0.1 %

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