Table. 2 Contributions of various sources to gross and net Nd fluxes exported from Amazonian mangrove systems

From: The Amazonian mangrove systems accumulate and release dissolved neodymium and hafnium to the oceans

 

Total

Riverine input

Porewater discharge

Fe-Mn oxyhydroxide release

Gross Nd flux (g yr−1)

9.0 ± 0.33 × 107

5.1 × 107

7.9 ± 2.7 × 106

3.1 ± 0.48 × 107

Contribution to total sources (%)

 

56.9 ± 2.1

8.8 ± 3.1

34.3 ± 4.4

Net Nd flux (g yr−1)

1.3 × 107

4.7 × 106

8.4 × 106

Contribution to total sources (%)

 

36.0

64.0

  1. Note. The gross Nd flux represents the total Nd output from all sources while the net Nd flux is calculated by subtracting the removal Nd flux. Details of the calculations are provided in the Supplementary Figure. S3, Figure. S4 and Table S3.
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