Greenhouse Gas Emissions Associated with Nile Tilapia (Oreochromis niloticus) Pond Fertilization in Western Kenya
Table 4
Mean fluxes of CH4, CO2, and N2O from unfertilized (UF), inorganic fertilized (IF), and organic fertilized (OF) Nile tilapia ponds (with range in parenthesis) over a 6-month period.
Parameters
UF mean ± SD
IF mean ± SD
OF mean ± SD
value
NEMA STDS
CH4 (mg·C·m−2h−1)
0.010 ± 0.012a (0.001–0.043)
0.025 ± 0.020b (0.005–0.068)
0.059 ± 0.094b (0.001–0.375)
0.005
—
CO2 (mg·CO2·m−2h−1)
0.216 ± 0.407a (−0.180–1.400)
0.227 ± 0.278a (−0.020–1.101)
0.334 ± 0.454a (−0.049–1.746)
0.344
4 mg CO2·m−3h−1
N2O (µg·N·m−2h−1)
−0.003 ± 0.175a (−0.628–0.326)
0.032 ± 0.056a (−0.049–0.187)
0.093 ± 0.324a (−0.022–1.384)
0.696
6.25 µg·m−3h−1
Means in a row with the same superscripts indicate no significant difference at 5%.
