Table 1 Pearson correlation coefficients for Fiji, Tonga, Rarotonga, American Samoa (Ta’u); coral skeletal annual δ13C and annual extension rate (in mm)

From: Coral carbon isotope sensitivity to growth rate and water depth with paleo-sea level implications

(A) Correlation coefficients for coral skeletal δ13C and extension rate

Fiji, Tonga, Rarotonga, Am. Samoa (Ta’u); Annual coral extension rate and annual skeletal δ13C (all Porites lutea)

  

R all data

p

R Before 1960

p

R After 1960

p

Fiji 1F

 

−0.45

<0.001

−0.55

<0.001

−0.33

<0.01

Fiji AB

 

−0.47

<0.001

−0.34

<0.001

−0.12

<0.01

Tonga TNI2

 

−0.64

<0.001

−0.68

<0.001

−0.3

<0.01

Rarotonga 2R

 

−0.55

 <0.001

−0.55

<0.001

−0.32

<0.01

Ta’u-1

 

−0.39

<0.001

−0.33

<0.001

−0.38

<0.01

 

Average R

0.5

 

0.49

 

0.29

 

(B) Correlation coefficients for coral skeletal δ 13 C and extension rate (3-year smoothed)

  

R All data 3 pt

p

R Before 1960

p

R After 1960

p

Fiji 1F

 

−0.59

<0.001

−0.71

<0.001

−0.01

<0.01

Fiji AB

 

−0.64

<0.001

−0.47

<0.001

−0.14

<0.01

Tonga TNI2

 

−0.77

<0.001

−0.80

<0.001

−0.28

<0.01

Rarotonga 2R

 

−0.71

<0.001

−0.70

<0.001

−0.22

<0.01

Ta’u-1

 

−0.57

<0.001

−0.50

<0.001

−0.69

<0.01

 

Average R

0.65

 

0.64

 

0.27

 

With 13 C Suess effect subtracted (see Methods)

(C) Correlation coefficients for coral skeletal δ 13 C-Suess effect and extension rate

  

R All data

p

R Before 1960

p

R After 1960

p

Fiji 1F

 

−0.42

<0.001

−0.45

<0.001

−0.58

<0.01

Fiji AB

 

−0.39

<0.001

−0.32

<0.001

−0.02

<0.01

Tonga TNI2

 

−0.58

<0.001

−0.66

<0.001

−0.47

<0.01

Rarotonga 2R

 

−0.49

<0.001

−0.49

<0.001

−0.17

<0.01

Ta’u-1

 

−0.28

<0.001

−0.30

<0.001

−0.45

<0.01

 

Average R

0.43

 

0.44

 

0.34

 

(D) Correlation coefficients for coral skeletal δ 13 C-Suess effect and extension rate (3-year smoothed)

  

R All data 3 pt

p

R Before 1960

p

R After 1960

p

Fiji 1F

 

−0.61

<0.001

−0.66

<0.001

−0.77

<0.01

Fiji AB

 

−0.54

<0.001

−0.45

<0.001

−0.1

<0.01

Tonga TNI2

 

−0.71

<0.001

−0.79

<0.001

−0.64

<0.01

Rarotonga 2R

 

−0.64

<0.001

−0.65

<0.001

−0.2

<0.01

Ta’u-1

 

−0.4

<0.001

−0.44

<0.001

−0.62

<0.01

 

Average R

0.58

 

0.60

 

0.47

 
  1. (A) R values for coral δ13C and extension rate for all data, data before 1960, and data after 1960. (B) Same as in (A), except on 3-year running averaged versions of coral δ13C and extension rate. (C) R values for coral δ13C with 13C Suess effect removed and extension rate for all data, data prior to 1960 and data after 1960. (D) Same as in (C), except on 3-year running averaged versions of coral δ13C minus 13C Suess effect and extension rate