Skip to main content

Table 1 Concentrations [range (avg ± SD)] of OC, TN, OC/TN ratio, δ13C, and δ15N in the Sundarban sediments

From: Sources and dynamics of sedimentary organic matter in Sundarban mangrove estuary from Indo-Gangetic delta

Variable

IS1

IS2

IS3

BS1

BS2

BS3

BS4

OC (%)

0.76–1.93 (0.93 ± 0.15)

0.76–5.22 (6.72 ± 1.14)

0.81–1.3 (0.92 ± 0.1)

1.12–2.41 (1.5 ± 0.26)

0.92–1.34 (1.13 ± 0.09)

0.92–1.56 (1.10 ± 0.12)

1.13–1.73 (1.27 ± 0.12)

TN (%)

0.057–0.15 (0.068 ± 0.012)

0.062–0.11 (0.074 ± 0.009)

0.043–0.092 (0.065 ± 0.011)

0.1–0.105 (0.082 ± 0.01)

0.045–0.066 (0.052 ± 0.004)

0.056–0.073 (0.065 ± 0.004)

0.05–0.08 (0.06 ± 0.006)

OC/TN ratio

11.43–16.19 (13.52 ± 1.20)

10.56–48 (14 ± 5.98)

11.48–19.41 (14 ± 1.74)

15.57–27 (18 ± 1.99)

16.16–25.58 (22 ± 1.83)

14.67–21.48 (17 ± 1.25)

18.58–30.56 (21 ± 2.31)

δ13C (‰)

−21.55 to −14.76 (−18.88 ± 0.97)

−26.8 to −16.26 (−19.64 ± 2.38)

−21.56 to −10.96 (−16.41 ± 2.14)

−23.54 to −16.4 (−19.42 ± 1.76)

−17.44 to −13.77 (−15.28 ± 0.88)

−18.32 to −15.1 (−16.73 ± 0.73)

−19.79 to −13.14 (−15.49 ± 1.27)

δ15N (‰)

0.09–12.24 (3.88 ± 0.76)

3.06–5.16 (4.09 ± 0.45)

3.28–5.6 (4.48 ± 0.56)

0.05–17.55 (0.016 ± 0.0017)

1.61–11.76 (5.02 ± 1.81)

2.35–4.14 (3.31 ± 0.33)

1.61–4.13 (2.99 ± 0.4)