Table 2 Statistical summary for cumulative carbonaceous greenhouse gas emissions from incubated cores measured during rewetting and 20 h post rewetting

From: Shifts in pore connectivity from precipitation versus groundwater rewetting increases soil carbon loss after drought

Variable

Effect

Intact cores

Homogenized cores

  

df

F ratio

P -value

df

F ratio

P -value

CO2−C

 

Drought

1

22.597

<0.0001

1

4.490

NS

 

Wetting direction

1

0.647

NS

1

0.002

NS

 

Drought x Wetting direction

1

9.170

0.010

1

0.038

NS

CH4−C

 

Drought

1

3.609

NS

1

0.018

NS

 

Wetting direction

1

0.095

NS

1

0.0004

NS

 

Drought x Wetting direction

1

7.043

0.021

1

0.020

NS

  1. REML models performed on non-transformed CO2−C data and log-transformed CH4−C data
  2. P-values marked in bold are considered significant <0.05, non-significant P-values are reported as NS
  3. Statistical summary including degrees of freedom (df), Fisher test statistic (F ratio), and the calculated probability (P-value) derived from residual maximum likelihood mixed effects models (REML) testing the effects of antecedent drought, wetting direction and the interaction of drought and rewetting (Drought x Rewetting Direction) on cumulative carbon emissions from CO2 and CH4 respired during rewetting and for 20 h post-rewetting for intact and homogenized cores
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