| Value |
10
Tg N/year
|
| Organism |
Biosphere |
| Reference |
L. A. Codispoti, An oceanic fixed nitrogen sink exceeding 400 TgNa-1 vs the concept
of homeostasis in the fixed-nitrogen inventory, Biogeosciences, 4, 233–253, 2007. |
| Primary Source |
Schultz, A. and Elderfield, H.: Controls on the physics and chemistry of seafloor hydrothermal circulation, in: Mid-Ocean Ridges: Dynamics of Processes Associated with Creation of New Ocean Crust, Philosophical Transactions: Mathematical, Phys. Eng. Sci., l, 387–425, 1997. |
| Method |
Estimated according to Annual hydrothermal flow (water mass) associated with ridges and ride-flanks of 2.4E16 kg H2O. If
one assumes that complete denitrification occurs in this entire
flow and that the original nitrate concentration is 30µM,
a denitrification rate of ~10 Tg N/year results (There are 14 g of N in one mole of Nitrate): (2.4E16 kg water/year)*(0.00003 moles nitrate/kg water)*(14g N per mole)=10.08E12g N/year=~10Tg N/year |
| Entered by |
Uri M |
| ID |
104784 |