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