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Table 10: Average value of each of the eight defining environmental variables in each class of the 20-class level of the Hauraki Gulf classification

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20 class

Area (km2)

Depth

Slope

Tidal current

Freshwater

Orbital velocity

SST phase

SST std dev

SST amp

2 class

4 class

6 classes

11 class

1

998.3

21

0.25

0.15

0.01

4.0

48.9

0.63

0.34

Inner

Deep

   

150

6.6

3

0.28

0.15

0.03

0.8

44.2

0.56

0.30

196

371.6

24

0.14

0.31

0.01

2.2

43.0

0.70

0.28

11

148.1

5

0.38

0.08

0.03

19.8

48.9

0.60

0.36

104

185.2

8

0.66

0.19

0.02

12.4

47.4

0.59

0.26

205

431.7

6

0.23

0.27

0.01

8.4

39.6

0.67

0.43

Shallow

 

South-east Bays

211

92.4

2

0.15

0.33

0.09

12.5

36.2

0.65

0.51

Northern Bays

254

249.9

5

0.07

0.31

0.13

9.5

35.5

0.81

0.39

Firth

278

104.8

2

0.04

0.30

0.65

10.4

33.2

0.86

0.33

Firth Estuary

2

146.1

5

0.71

0.18

0.01

37.0

55.2

0.55

0.26

Mid to outer

Coastal

Shallow

 

53

63.9

14

0.95

0.09

0.01

15.9

58.2

0.52

0.30

22

21.6

10

1.90

0.21

0.01

39.4

60.1

0.57

0.35

3

182.0

40

0.95

0.28

0.01

2.2

58.1

0.57

0.29

Deep

Steep mid

28

92.6

21

1.56

0.29

0.01

6.7

55.1

0.57

0.23

14

107.9

52

2.24

0.16

0.01

2.8

60.5

0.59

0.37

Steep outer

130

2.8

25

2.11

1.80

0.01

18.5

57.4

0.57

0.19

Large tidal currents

136

7.9

52

0.16

2.69

0.01

0.6

57.1

0.60

0.20

4

2886.6

45

0.12

0.27

0.01

0.7

52.9

0.65

0.23

Ocean

Shallow

 

5

1563.6

65

0.26

0.15

0.01

0.3

58.0

0.61

0.34

Deep

 

6

1121.2

112

0.27

0.10

0.01

0.0

60.5

0.62

0.40

Note: See Figure 15 for location of the classes. The divisions within the table show how environmental variation has been differentiated at the 2, 4, 6 and 11-class levels.

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