Table 1 Comparison of global mangrove sediment and ecosystem carbon stocks estimated in this study with published values. NA not available; *including data from a few unpublished studies.

From: Improved estimates on global carbon stock and carbon pools in tidal wetlands

Components

Number of studies

Carbon stock (Mg ha−1)

Remarks

References

Sediment OC stock

NA

321 (range: 272–703)

Use of mean value as the representative value of carbon stock. Synthesis of data from Kristensen et al.5, Donato et al.42, and Chmura et al. (2003).

Jardine and Siikamäki25

Sediment OC stock

147*

283 ± 193 (range: 14.9–1526.9)

Use of mean value as the representative value of carbon stock. Conversion factor for sediment OC from LOI is based on data from Palau, Indonesia.

Atwood et al.9

Sediment OC stock

149*

361 ± 136 (range: 86–729)

Use of mean value as the representative value of carbon stock. Conversion factor for sediment OC from LOI is based on 146 samples.

Sanderman et al.13

Total carbon stock (live biomass carbon, sediment OC)

NA

82.8 (live biomass), 365.6 (total carbon stock)

Biomass is estimated by remote sensing. Use of sediment organic carbon estimated by Atwood et al.9. Total carbon stock is the sum of live biomass carbon and sediment OC stock.

Simard et al.20

Ecosystem carbon stock (live and dead biomass carbon, sediment OC and IC)

235* (sediment OC), 25 (sediment IC), 40 (dead biomass carbon)

237.4 (sediment OC, range: 6.1–1526.9), 34.7 (sediment IC, range: 0–1506.9), 102.5 (live biomass carbon, range: 75.8–150.3), 76 (dead biomass carbon), 450.6 (ecosystem carbon stock)

Live biomass carbon is estimated by Simard et al.20, Tang et al.54, Hamilton and Friess27, Twilley, et al.55, and Hutchison, et al.56. Use of median value as the representative value of carbon stock. Conversion factor for sediment OC from LOI is based on global data from 1189 samples.

This study