Table 2 Comparisons by state of organic carbon (OC) stocks and accretion rates across Australia (mean, SE).

From: Carbon sequestration by Australian tidal marshes

State

Organic carbon (%OC)

Dry bulk density (g cm3)

Stock (Mg OC ha−1, 30 cm depth)

Stock (Mg OC ha−1, 1 m depth)

Sediment Accretion (g OC m2 yr−1)

Number of sites

NSW

5.35 ± 0.49

0.92 ± 0.03

69.5 ± 3.33

188.3 ± 9.92

48.63 ± 2.33

25

QLD

8.67 ± 2.17

0.73 ± 0.11

116.79 ± 8.72

186.26 ± 60.24

81.71 ± 26.43

6

SA

6.78 ± 1.56

0.24 ± 0.12

56.6 ± 8.7

169.78 ± 48.85

39.6 ± 6.1

3

VIC

7.86 ± 0.59

0.88 ± 0.04

86.86 ± 4.79

139.06 ± 7.88

60.77 ± 3.35

45

WA

7.35 ± 1.8

0.3 ± 0.09

43.12 ± 7.93

91.25 ± 10.24

30.16 ± 5.6

4

  1. Dry bulk density and percent OC data is representative of 30 cm deep cores, except NSW where data is representative of 20 cm depth. Only OC stock values include data taken from the literature (Appendix 1). See methods for sediment accretion calculations, and Appendix 2 for accretion values.
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