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Table 4 Average values (±DE) of environmental variables recorded at surface and deeper strata of each sampling site in Caucahue Channel. REF = references sites; Q1, Q9, Q11 = mussel farms; Q2, Q6, Q12 = salmon farms

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

Variable

REF

Q 1

Q 9

Q 11

Q 2

Q 6

Q 12

Depth (m)

56.57 ± 37.41

41 ± 0

50 ± 0

26 ± 0

50 ± 0

30

77 ± 0

Surface Temperature (°C)

10.53 ± 0.15

10.51 ± 0.07

10.62 ± 0.06

10.55 ± 0.02

10.14 ± 0.24

10.49

10.73 ± 0.08

Bottom Temperature (°C)

10.54 ± 0.12

10.61 ± 0.13

10.78 ± 0.13

10.73 ± 0.14

10.42 ± 0.14

10.63

10.81 ± 0.11

Surface Conductivity (mS/cm)

36.09 ± 0.21

35.92 ± 0.16

35.81 ± 0.32

35.52 ± 1.12

35.16 ± 0.58

36.04

36.18 ± 0.10

Bottom Conductivity (mS/cm)

36.24 ± 0.09

36.23 ± 0.12

36.37 ± 0.13

36.4 ± 0.14

35.88 ± 0.54

36.33

36.48 ± 0.15

Surface TDS (g/l)

32.43 ± 0.12

32.28 ± 0.09

32.09 ± 0.31

31.9 ± 0.99

31.92 ± 0.34

32.41

32.3 ± 0.06

Bottom TDS (g/l)

32.53 ± 0.06

32.47 ± 0.04

32.45 ± 0.07

32.52 ± 0.03

32.5 ± 0.02

32.55

32.52 ± 0.05

Surface Salinity

32.49 ± 0.14

32.33 ± 0.11

32.13 ± 0.34

31.91 ± 1.10

31.81 ± 0.49

32.46

32.39 ± 0.05

Bottom Salinity

32.59 ± 0.09

32.55 ± 0.05

32.54 ± 0.07

32.61 ± 0.03

32.58 ± 0.04

32.64

32.62 ± 0.06

Surface Dissolved Oxygen (mg/l)

7.53 ± 0.37

7.04 ± 0.85

7.38 ± 0.52

7.56 ± 0.47

7.17 ± 0.22

6.96

7.46 ± 0.46

Bottom Dissolved Oxygen (mg/l)

6.77 ± 0.55

6.55 ± 0.76

6.84 ± 0.57

6.48 ± 0.48

6.52 ± 0.21

6.63

6.81 ± 0.53

Surface pH

8.36 ± 0.05

8.34 ± 0.06

8.25 ± 0.02

8.32 ± 0.05

8.35 ± 0.11

8.33

8.17 ± 0.08

Bottom pH

8.32 ± 0.03

8.33 ± 0.05

8.25 ± 0.01

8.33 ± 0.04

8.30 ± 0.04

8.39

8.19 ± 0.03

Surface Redox (mV)

26.09 ± 9.96

28.69 ± 4.46

27.16 ± 7.41

23.88 ± 5.64

38.71 ± 13.16

34.6

23.39 ± 9.64

Bottom Redox (mV)

28.75 ± 8.15

31.71 ± 6.63

24.78 ± 4.22

21.5 ± 5.98

43.83 ± 12.75

50.5

21.01 ± 7.25

TOM (%)

3.03 ± 2.14

2.41 ± 1.83

3.78 ± 1.57

2.81 ± 1.19

2.3 ± 0.79

2.04

3.65 ± 2.22

Mean (μm)

276.42 ± 188.53

715.07 ± 843.18

604.94 ± 564.50

347.2 ± 153.59

191.04 ± 82.41

174.02

324.79 ± 352.05

Sorting (μm)

189.9 ± 100.81

359.83 ± 353.21

487.17 ± 304.34

337.63 ± 161.46

208.3 ± 108.64

122.67

315.13 ± 323.78

Gravel (%)

0.36 ± 0.01

22.55 ± 0.38

14.02 ± 0.23

1.83 ± 0.03

0.67 ± 0.01

0.03

5.53 ± 0.14

Sand (%)

84.08 ± 0.18

74.45 ± 0.38

77.05 ± 0.20

88.19 ± 0.06

76.06 ± 0.17

94.7

72.89 ± 0.16

Mud (%)

15.56 ± 0.18

2.99 ± 0.02

8.93 ± 0.10

9.98 ± 0.07

23.28 ± 0.18

5.27

21.58 ± 0.14