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Table 2 Output of PERMANOVA main tests for (A) abundance fourth-root transformed with the Bray-Curtis index, (B) biomass fourth-root transformed with the Bray-Curtis index. Factors of analysis were channel area (AREA), environment (ENV), farming center (CENTER) and sampling site (SITE). P(perm) < 0.05 values are in bold

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

Source

d.f.

SS

MS

Pseudo-F

P (perm)

Unique perms

A)

AREA

2

22.628

11.314

3.8018

0.0001

9893

Res

128

380.920

2.976

   

Total

130

403.550

    

ENV

2

26.665

13.332

4.5281

0.0001

9848

Res

128

376.890

2.944.4

   

Total

130

403.550

    

CENTER

6

80.450

13.408

5.1458

0.0001

9806

Res

124

323.100

2.605.7

   

Total

130

403.550

    

SITE

46

274.810

5.974.2

3.8981

0.0001

9564

Res

84

128.740

1.532.6

   

Total

130

403.550

    

B)

AREA

2

24.985

12.492

3.7757

0.0001

9866

Res

128

423.500

3.308.6

   

Total

130

448.490

    

ENV

2

27.043

13.522

4.1067

0.0001

9862

Res

128

421.450

3.292.5

   

Total

130

448.490

    

CENTER

6

82.509

13.752

4.6592

0.0001

9747

Res

124

365.980

2.951.4

   

Total

130

448.490

    

SITE

46

299.090

6.502

3.6559

0.0001

9558

Res

84

149.390

1.778.5

   

Total

130

448.490