Table 3. The result of multinomial logistic regression for factors important for the presence of treefrog species within rice-paddy complexes.
| Factor |
H. japonica |
both species |
||||
|---|---|---|---|---|---|---|
| B ± SE | Wald | df, P | B ± SE | Wald | df, P | |
| Complex 1 | ||||||
| Bush | −0.14 ± 0.005 | 7.588 | 1, 0.006 | −0.027 ± 0.012 | 5.392 | 1, 0.020 |
| Road | 0.027 ± 0.024 | 1.232 | 1, 0.267 | 0.013 ± 0.031 | 0.186 | 1. 0.666 |
| Complex 2 | ||||||
| Bush | 0.001 ± 0.002 | 0.069 | 1, 0.793 | 0.005 ± 0.003 | 2.305 | 1, 0.129 |
| Road | 0.019 ± 0.010 | 3.709 | 1, 0.054 | 0.007 ± 0.017 | 0.168 | 1, 0.682 |
| Forest | −0.012 ± 0.002 | 23.824 | 1, <0.001 | −0.010 ± 0.005 | 3.747 | 1, 0.053 |
| Complex 4 | ||||||
| Bush | −0.011 ± 0.006 | 3.360 | 1, 0.067 | −0.022 ± 0.007 | 10.346 | 1, 0.001 |
| Road | 0.062 ± 0.027 | 5.159 | 1, 0.023 | 0.055 ± 0.029 | 3.752 | 1, 0.053 |
| Forest | −0.029 ± 0.011 | 7.571 | 1, 0.006 | −0.032 ± 0.011 | 8.965 | 1, 0.003 |
| Complex 5 | ||||||
| Bush | 0.005 ± 0.003 | 2.978 | 1, 0.084 | 0.000 ± 0.004 | 0.002 | 1, 0.961 |
| Road | 0.043 ± 0.010 | 18.549 | 1, <0.001 | 0.023 ± 0.011 | 4.242 | 1, 0.039 |
| Forest | 0.001 ± 0.001 | 1.110 | 1, 0.292 | 0.000 ± 0.001 | 0.017 | 1, 0.897 |
There are four possible combinations for the occurrences of the two treefrog species: H. suweonensis only, H. japonica only, both species, and neither Hylid species. Because the sample sizes for H. suweonensis-only populations were small, multinomial logistic regressions were conducted for H. japonica only and for both species. “Forest” could not be calculated for complex 1. Significant values are in bold.