Table 1 Organic matter content residing in coastal soils and associated soil DOC and DON concentrations from soil water leaching experiments.

From: Groundwater as a major source of dissolved organic matter to Arctic coastal waters

Sample depth

Soil OM content

Leachable soil DOM

 

% OC (100 × mg C mg soil-1)

% ON (100 × mg N mg soil-1)

mg DOC

g soil−1

mg DON

g soil−1

mg DOC

g soil C−1

mg DON

g soil N−1

0–5 cm

21.3 ± 4.1

1.3 ± 0.24

0.48 ± 0.12

0.015 ± 0.009

2.36 ± 0.52

1.10 ± 0.48

15–20 cm

5.1 ± 1.0

0.25 ± 0.09

0.05 ± 0.01

0.001 ± 0.001

1.06 ± 0.25

1.24 ± 1.13

30–40 cm

16.8 ± 8.5

0.95 ± 0.45

0.13 ± 0.05

0.006 ± 0.003

1.02 ± 0.35

1.34 ± 1.03

Permafrost

9.2 ± 3.7

0.58 ± 0.29

0.17 ± 0.54

0.009 ± 0.004

2.68 ± 1.10

2.57 ± 1.77

  1. The permafrost category represents soils at approximately 5–10 cm below the ice table. Values are ±1 standard error, n = 3 for all samples.
Back to article page