Statistical analysis
All the analysis was performed on log-transformed data to transform the
skewed data to approximately conform to normality. The Kolmogorov –
Smirnov test was used to test for normality. Then, an analysis of
CO2 emission rates for detecting significant differences
among the termite mound species was tested by the analysis of variance
ANOVA as well as their surrounding soils during the dry and wet seasons.
Mean for groups in homogeneous subset among species were evaluated by
Tukey HSD’s post hoc test. The difference of CO2emission from the nest and surrounding soil in each species was tested
by t-test. The relationship between CO2 emission from
surrounding soil and the soil environmental factors (i.e. soil
temperature and soil moisture content) was determined with the Pearson
correlation analysis. All statistical calculations were performed in
SPSS ver. 20.0.0 for Windows.