Table 8 Output of SIMPER analyses obtained from abundance species data. In bold the most representative taxa for dissimilarity among groups (MYT, SAL, REF sites)

Average dissimilarity = 82.45

MYT

SAL

Taxa

Av. Ab

Av. Ab

Av. Diss

Diss/SD

Cont %

Cum %

Chaetozone sp.

1.54

1.06

3.11

1.18

3.77

3.77

Nematoda

1.31

0.86

3.07

1.01

3.72

7.49

Cirratulidae

0.43

0.99

2.48

0.88

3.01

10.5

Lumbrineris sp.

1.18

0.46

2.22

1.29

2.69

13.19

Prionospio sp.

0.82

0.48

2.12

0.84

2.57

15.76

Paraonidae

0.69

0.6

2.04

0.96

2.48

18.24

Amphipoda

0.83

0.64

2.03

1.08

2.46

20.7

Bivalvia

0.61

0.84

2.03

1.04

2.46

23.16

Ampharetidae

0.65

0.54

1.99

0.84

2.42

25.58

Glycera sp.

0.78

0.41

1.79

1.02

2.17

27.75

Average dissimilarity = 73.88

MYT

REF

Taxa

Av. Ab

Av. Ab

Av. Diss

Diss/SD

Cont %

Cum %

Nematoda

1.31

1.42

2.98

1.12

4.03

4.03

Bivalvia

0.61

1.82

2.78

1.52

3.77

7.79

Chaetozone sp.

1.54

1.31

2.72

1.19

3.69

11.48

Prionospio sp.

0.82

1.09

2.45

1

3.31

14.79

Ostracoda

0.42

1.32

2.35

1.24

3.18

17.98

Paraonidae

0.69

0.88

2.08

0.92

2.82

20.8

Ampharetidae

0.65

0.85

2.01

0.99

2.72

23.52

Amphipoda

0.83

1.11

1.99

1.15

2.7

26.22

Glycera sp.

0.78

0.78

1.93

1.01

2.61

28.82

Caecum chilense

0.51

0.63

1.9

0.72

2.57

31.39

Average dissimilarity = 78.16

SAL

REF

Taxa

Av. Ab

Av. Ab

Av. Diss

Diss/SD

Cont %

Cum %

Nematoda

0.86

1.42

2.77

1.08

3.55

3.55

Bivalvia

0.84

1.82

2.7

1.28

3.45

7

Ostracoda

0.17

1.32

2.67

1.26

3.41

10.41

Chaetozone sp.

1.06

1.31

2.64

1.19

3.38

13.79

Cirratulidae

0.99

0.76

2.6

0.9

3.33

17.12

Prionospio sp.

0.48

1.09

2.28

1.02

2.91

20.03

Paraonidae

0.6

0.88

2.13

0.98

2.73

22.76

Amphipoda

0.64

1.11

2.11

1.21

2.7

25.46

Lumbrineris sp.

0.46

1.08

1.93

1.29

2.47

27.94

Glycera sp.

0.41

0.78

1.9

0.94

2.43

30.37