TABLE 2.
Effect of methane concentration and N amendment on intrinsic in situ growth rates of type I and II MOB in forest soil incubations
| CH4 concn (ppmv) | N treatment | Growth rate (day−1)a
|
|
|---|---|---|---|
| Type I | Type II | ||
| 1,000 | No N | 0.020 ± 0.004 | 0.029 ± 0.010 |
| NH4+ | 0.017 ± 0.001 | 0.012 ± 0.008 | |
| NO3− | 0.022 ± 0.007 | 0.032 ± 0.020 | |
| 10,000 | No N | 0.031 ± 0.002 | 0.036 ± 0.005 |
| NH4+ | 0.033 ± 0.002 | 0.013 ± 0.010 | |
| NO3− | 0.043 ± 0.008 | 0.034 ± 0.014 | |
a
Growth rates were calculated using cell numbers calculated from PFLA C16:1ω8c (type I) and C18:1ω8c (type II). For all samples n = 3. Values are means and standard deviations.