Macrofauna community patterns in a Chiloe Island channel used intensely for aquaculture: the ecological status of its benthic environment

Table 6 Best group of variables selected by DISTLM analysis, utilizing the BEST procedure and Bayesian Information Criterion (BIC) for resemblance matrixes based on (a) abundance and (b) biomass. BIC = Bayesian Information Criterion and RSS = Residual Sum of Squares

BIC	RSS	No. of Var.	Variable Selection
a) Abundance
368.20	100,740	1	Mean Grain Size (mm)
369.35	95,123	2	Surface pH, Sorting (mm)
371.20	91,155	3	Surface pH, Mean grain size (mm), Sorting (mm)
373.43	88,067	4	Surface pH, seafloor pH, Mean grain size (mm), Sorting (mm)
375.73	85,207	5	Depth (m), Surface pH, TOM (%), Mean grain size (mm), Sorting (mm)
b) Biomass
378.23	124,710	1	Mean Grain Size (mm)
379.61	118,320	2	TOM (%), Mean Grain Size (mm)
381.44	113,350	3	TOM (%), Sorting (mm)
383.42	108,920	4	Seafloor pH, TOM (%), Mean Grain Size (mm), Sorting (mm)
385.42	104,710	5	Seafloor temperature (°C), seafloor pH, TOM (%), Mean grain size (mm), Sorting (mm)

ISSN: 0717-6317