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Table 5 Interannual variation of the average abundance (Av. abund) of the most relevant taxa of the stations located in the inner and channel mouth stations

From: Spatial and temporal variation of the benthic macrofauna in a grossly polluted estuary from southwestern Spain

Taxa

Av. abund

Av. abund

Av. diss

Ratio

Contrib (%)

Cum. (%)

Inner stations

 

1998

2000

(average dissimilarity = 69.24)

Anthuridae

0.00

132.22

7.38

2.68

10.66

10.66

Nereididae

1.11

60.00

5.84

2.65

8.43

19.09

Spionidae

193.33

1,054.44

5.09

1.46

7.35

26.44

Oligochaetes

88.89

32.22

4.99

1.90

7.20

33.65

 

1998

2002

(average dissimilarity = 72.78)

Cardiidae

5.56

486.00

9.82

1.59

13.49

13.49

Pectinariidae

0.00

94.00

6.85

1.43

9.42

22.90

Spionidae

193.33

248.00

5.24

1.61

7.19

30.10

Nephtyidae

11.11

24.67

4.49

1.08

6.17

36.27

 

2000

2002

(average dissimilarity = 69.56)

Spionidae

1,054.44

248.00

5.86

1.43

8.42

8.42

Nereididae

60.00

0.67

5.24

2.53

7.53

15.95

Anthuridae

132.22

4.67

5.17

1.46

7.43

23.38

Pectinariidae

0.00

94.00

4.64

1.48

6.67

30.05

Capitellidae

36.67

0.00

4.20

1.45

6.03

36.09

Oligochaetes

32.22

0.00

4.17

1.82

6.00

42.08

Cardiidae

28.89

486.00

3.78

1.13

5.43

47.52

Channel mouth stations

 

1998

2000

(average dissimilarity = 61.55)

Veneridae

426.67

208.00

2.55

1.48

4.14

4.14

Corophiidae

0.00

59.33

2.46

4.46

3.99

8.13

Leptocheliidae

0.00

50.67

2.31

3.82

3.76

11.89

Phyllodocidae

320.00

5.33

2.26

1.80

3.67

15.56

Phoronidea

23.33

0.00

2.14

5.57

3.47

19.03

Oligochaetes

0.00

113.33

1.77

0.87

2.87

21.91

Serpulidae

3.33

50.00

1.71

1.68

2.78

24.69

Corbulidae

23.33

69.33

1.69

1.34

2.74

27.43

Anomiidae

0.00

8.67

1.62

11.45

2.64

30.07

 

1998

2002

(average dissimilarity = 72.88)

Pectinariidae

0.00

218.00

3.40

5.08

4.67

4.67

Spionidae

10.00

319.00

2.65

2.19

3.63

8.30

Cardiidae

0.00

92.50

2.58

1.44

3.54

11.84

Oweniidae

0.00

50.50

2.28

1.58

3.13

14.97

Phyllodocidae

320.00

4.50

2.13

1.64

2.92

17.89

Oligochaetes

0.00

80.00

2.00

0.87

2.75

20.64

Phoronidea

23.33

0.00

1.96

3.13

2.69

23.33

Hesionidae

0.00

14.50

1.76

2.09

2.42

25.75

Corophiidae

0.00

32.00

1.76

9.02

2.41

28.16

Diogenidae

0.00

29.50

1.74

10.13

2.38

30.54

 

2000

2002

(average dissimilarity = 61.23)

Pectinariidae

0.00

218.00

2.72

6.29

4.44

4.44

Serpulidae

50.00

0.00

1.83

3.86

2.98

7.42

Oweniidae

0.00

50.50

1.79

1.67

2.92

10.34

Veneridae

208.00

130.50

1.62

1.79

2.64

12.98

Orbiniidae

78.00

5.00

1.59

1.36

2.60

15.59

Cardiidae

4.00

92.50

1.43

1.16

2.34

17.92

Oligochaetes

113.33

80.00

1.42

0.91

2.33

20.25

Capitellidae

15.33

105.00

1.36

3.36

2.22

22.47

Spionidae

55.33

319.00

1.24

1.44

2.03

24.50

Mactridae

42.00

329.50

1.22

4.18

1.99

26.49

  1. Taxa are listed in decreasing order according to its contribution to the average of the dissimilarity (Av. diss) between sampling periods