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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

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

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)