Table 8.2Estimated parameters and goodness-of-fit statistics for the Sugihara Fraction (SF),
Power Fraction (PF) model and the zero-sum multinomial distribution (ZSM) fitted to observed
SADs of three invertebrate stream communities. Niche-assembly models are tested for
observed SADs based on biomass (e.g. SFB) and density (e.g. SFD), while ZSM is tested on
SADs of density.Paramgives the estimated parameter values of the SAD models with the best
fit to the observed SAD;qis the estimated fundamental biodiversity number andmis the
dispersal probability of ZSM; Kolmogorov-Smirnov (KS) test statistics for the goodness-of-fit
between observed and expected distributions.PKSgives the probability of departure of a
model from observed SADs;r^2 is the coefficient of variation between two distributions;PCL
gives the probability of deviation from the model. *PCL0.05. Further details in text.
Seebach
Model Param KS PKS r^2 PCL
SFB 0.663 0.042 0.816 0.944 0.054
SFD 0.772 0.069 0.234 0.974 0.076
PFB 0.125 0.027 0.997 0.967 0.010
PFD 0.024 0.031 0.981 0.987 0.036
ZSM – 0.154 <0.001 0.574 0.496
40.756
m 0.990
Llwch
Model Param KS PKS r^2 PCL
SFB 0.717 0.051 0.778 0.975 0.056
SFD 0.678 0.042 0.930 0.960 0.090
PFB 0.086 0.054 0.715 0.968 0.043
PFD 0.108 0.039 0.961 0.983 0.006
ZSM – 0.280 <0.001 0.463 0.943
48.500
m 0.990
Mynach
Model Param KS PKS r^2 PCL
SFB 0.670 0.073 0.492 0.939 0.144
SFD 0.760 0.092 0.218 0.952 0.245
PFB 0.159 0.054 0.846 0.870 0.026*
PFD 0.052 0.092 0.218 0.946 0.153
ZSM – 0.338 <0.001 0.741 0.900
33.333
m 0.999
BODY SIZE AND SCALE INVARIANCE 151