Table 2 Organic C (OC), Total N (TN) and carbonate stocks down to 50 cm and 100 cm.

From: Stocks and fluxes of carbon and nitrogen in northeastern Brazil coastal seascapes

Ecosystem

  

Stock (50cm)

Stock (100cm)

OC

TN

Carbonates

OC

TN

Carbonates

  

Corer length

(cm)

(Mg ha−1)

(Mg ha−1)

(Mg ha−1)

(Mg ha−1)

(Mg ha−1)

(Mg ha−1)

Mangrove high salinity

1

100

154

6.5

213

299

12.1

390

2

100

138

6.3

236

276

11.9

387

3

100

106

4.6

108

213

9.2

245

mean ± sd

100

133 ± 24

5.8 ± 1.0

186 ± 68

263 ± 44

11.0 ± 1.6

341 ± 83.3

Mangrove low salinity

1

100

132

4.6

51

234

8.1

104

2

95

109

4.2

54

231*

8.8*

118*

3

95

127

4.9

56

251*

9.2*

113*

mean ± sd

97 ± 3

123 ± 12

4.6 ± 0.3

54 ± 3

239 ± 11

8.7 ± 0.6

112 ± 7

Tidal flat

1

100

127

7.8

271

241

14.7

520

2

92

129

8.0

259

254*

15.8*

560*

3

90

157

10.0

346

303*

18.9*

719*

mean ± sd

97 ± 5

138 ± 17

8.6 ± 1.2

292 ± 47

266 ± 27

16.4 ± 2.2

600 ± 105

Marsh

1

95

103

7.1

50

234*

12.9*

102*

2

100

103

5.1

43

259

10.3

74

3

70

175

7.5

66

356*

15.2*

135*

mean ± sd

88 ± 16

127 ± 42

6.6 ± 1.3

53 ± 12

283 ± 64

11.6 ± 2.6

106 ± 30

Inundated forest

1

50

140

7.5

23

284*

15.3*

44*

2

83

65

3.5

13

138*

7.7*

27*

mean ± sd

66

103

5.5

18

211

11.5

37

  1. Estimated values for the upper 100 cm are marked with an asterisk (*).
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