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Table 1 Environmental parameters and sediment granulometric attributes for the seven sampling stations of the CGR sampling area in northern Chile during September 1996, and September 1997

From: On some ecological aspects of the lugworm Abarenicola affinis chiliensis Wells, 1963 (Polychaeta: Scolecida: Arenicolidae) from shallow soft bottoms of northern Chile

Station

GMS

ds

SC

TOM

DO

S

September 1996

 1

2.94

1.18

23.54

31.62

1.14

34.96

 2

2.94

1.31

27.27

32.10

1.23

34.82

 3

3.32

0.95

35.30

28.52

1.04

34.95

 4

3.06

0.76

3.88

13.91

0.75

34.93

 5

2.94

1.12

20.89

25.48

0.86

34.94

 6

3.05

0.63

1.56

4.18

0.82

34.96

 7

2.83

1.03

19.24

27.80

1.14

34.86

 Mean

3.02

1.00

18.81

23.37

1.00

34.92

 SD

0.16

0.24

12.18

10.43

0.19

0.06

September 1997

 1

3.32

0.98

20.23

19.25

1.15

35.20

 2

2.73

1.14

8.88

28.40

1.09

35.45

 3

3.06

0.90

11.25

19.56

1.41

35.48

 4

2.94

1.06

12.33

22.52

0.82

35.47

 5

3.47

0.93

24.20

22.47

1.50

35.28

 6

3.18

0.60

1.27

2.89

0.99

35.47

 7

3.18

1.12

21.33

25.85

1.21

35.22

 Mean

3.13

0.96

14.21

20.13

1.17

35.37

 SD

0.24

0.18

8.11

8.27

0.23

0.13

  1. GMS average particle size (φ), ds coefficient of “sorting” (φ), SC silt-clay fraction (%), TOM total organic matter (%), DO dissolved oxygen (ml O2/l) and S salinity (psu)