Table 1 Equations describing DMe/Me as a function of aragonite growth rate (R, μmol m2 h−1) and pH (total scale) in precipitations conducted at 25 °C and as a function of log precipitation rate and temperature (T) in precipitations conducted over variable temperature

From: Aragonite lithium/magnesium as an indicator of calcification media saturation state in marine calcifiers

No.

Equation

r2

 

p value

 
 

DMe/Me as a function of log precipitation rate (R) and pH at 25 °C (n = 28)

 

rate

pH

intercept

3

DMg/Ca = 6.79 (±0.74) x 10−4 log R + 7.56 (±19.8) x 10−5 pH – 1.79 (±1.65) x 10−2

0.80

5.4 × 109

0.71

0.29

4

DLi/Ca = 5.06 (±1.05) x 10−4 log R + 1.59 (±2.83) x 10-4 pH – 3.28 (±23.5) x 10−4

0.48

8.5 × 105

0.58

0.89

5

DLi/Mg = −2.56 (±0.32) log R - 0.688 (±0.862) pH + 16.3 (±7.2)

0.75

6.3 × 108

0.45

0.033

 

Log precipitation rate (R) as a function of ΩAr and T (n = 63)

 

ΩAr

T

Intercept

6

LogR = 8.77 (±0.50) X 10−2 ΩAr + 5.53 (±0.31) x 10−2 T + 0.781 (±0.093)

0.91

2.6 × 1025

1.0 × 10−25

1.2 × 10−11

 

DMe/Me as a function of log precipitation rate (R) and T (n = 63)

 

rate

T

intercept

7

DMg/Ca = 7.19 (±0.48) x 10−4 logR - 2.56(±0.38) x 105 – 6.88 (±1.09) x 10−4

0.80

3.6 × 10−22

7.0 × 10−9

3.7× 10−8

8

DLi/Ca = 5.44 (±0.65) x 10-4 logR - 8.92 (±0.52) x 10−5 T + 3.19 (±0.15) x 10−3

0.83

1.0 × 10−11

6.9 × 10−25

8.3 × 10−30

9

DLi/Mg = −2.75 (±0.21) logR + 1.03 (±1.67) x 10−2 T + 11.4 (±0.5)

0.82

2.7 × 10−19

0.62

3.2 × 10−32

 

DLi/Mg as a function of log precipitation rate (R) (n = 63)

 

rate

 

intercept

10

DLi/Mg = −2.66 (±0.15) logR + 11.4 (±0.5)

0.83

4.2 × 10−25

 

9.2 × 10−33

  1. The equations for aragonite precipitation rate as a function of ΩAr and T and for DLi/Mg as a function of precipitation rate only, are also included. Standard errors of equation coefficients and intercepts are included in brackets. Coefficients of determination (r2) and p values for each equation coefficient are shown.
  2. Significant p values are highlighted in bold.