Appendix G. Parameters of the most parsimonious regression models fitted on breeding attempts for which >1 egg hatched or >1 hatchling fledged.
TABLE G1. Parameters of the most parsimonious model inferring within-clutch hatching probability of Tree Swallows (arcsine-transformed) along a gradient of agricultural intensification in southern Québec, 2004–2006. Estimates pertain to a linear mixed model with farm ID as random factor and relative amount of water and extensive culture cover measured within 20 km of the nestbox (n = 715). See Table 1 for variable definition and justification.
Parameter |
Estimate |
SE |
CI (95%) |
||
Intercept |
1.703 |
0.224 |
1.263 |
> β > |
2.144 |
Year 2 |
-0.032 |
0.037 |
-0.104 |
> β > |
0.039 |
Year 3 |
-0.098 |
0.033 |
-0.164 |
> β > |
-0.033 |
Clutch initiation date |
-0.003 |
0.002 |
-0.007 |
> β > |
0.000 |
Temperature |
0.000 |
0.006 |
-0.012 |
> β > |
0.012 |
Precipitation |
0.007 |
0.005 |
-0.003 |
> β > |
0.018 |
Water |
0.025 |
0.006 |
0.013 |
> β > |
0.037 |
Extensive culture |
0.002 |
0.005 |
-0.007 |
> β > |
0.011 |
Manure tanks |
-0.224 |
0.069 |
-0.360 |
> β > |
-0.088 |
Cattle |
-0.001 |
0.005 |
-0.012 |
> β > |
0.010 |
Extensive culture × manure tanks |
0.009 |
0.003 |
0.003 |
> β > |
0.014 |
Extensive culture × cattle |
0.000 |
0.000 |
-0.000 |
> β > |
0.000 |
TABLE G2. Parameters of the most parsimonious model inferring the within-brood number of Tree Swallow fledglings along a gradient of agricultural intensification in southern Québec, 2004–2006. Estimates pertain to a linear mixed model with farm ID as random factor and relative amount of water and extensive culture cover measured within 5 km of the nestbox (n = 597). See Table 1 for variable definition and justification.
Parameter |
Estimate |
SE |
CI (95%) |
||
Intercept |
9.109 |
0.981 |
7.182 |
> β > |
11.035 |
Year 2 |
-0.047 |
0.142 |
-0.326 |
> β > |
0.232 |
Year 3 |
-0.277 |
0.147 |
-0.566 |
> β > |
0.012 |
Clutch initiation date |
-0.043 |
0.006 |
-0.056 |
> β > |
-0.031 |
Water |
0.001 |
0.044 |
-0.085 |
> β > |
0.086 |
Extensive culture |
0.061 |
0.017 |
0.028 |
> β > |
0.094 |
Manure tanks |
0.422 |
0.222 |
-0.015 |
> β > |
0.859 |
Cattle |
-0.006 |
0.018 |
-0.041 |
> β > |
0.029 |
Extensive culture × manure tanks |
-0.019 |
0.008 |
-0.035 |
> β > |
-0.004 |
Extensive culture × cattle |
-0.000 |
0.001 |
-0.001 |
> β > |
0.001 |
TABLE G3: Parameters of the most parsimonious model inferring fledging probability of Tree Swallows (arcsine-transformed) along a gradient of agricultural intensification in southern Québec, 2004–2006. Estimates pertain to a linear mixed model with farm ID as random factor and relative amount of water and extensive culture cover measured within 5 km of the nestbox (n = 597). See Table 1 for variable definition and justification.
Parameter |
Estimate |
SE |
CI (95%) |
||
Intercept |
1.599 |
0.264 |
1.079 |
> β > |
2.118 |
Year 2 |
-0.003 |
0.034 |
-0.069 |
> β > |
0.063 |
Year 3 |
-0.000 |
0.035 |
-0.068 |
> β > |
0.069 |
Clutch initiation date |
-0.002 |
0.002 |
-0.005 |
> β > |
0.001 |
Chicks hatched |
-0.052 |
0.012 |
-0.075 |
> β > |
-0.030 |
Water |
0.005 |
0.010 |
-0.014 |
> β > |
0.024 |
Extensive culture |
0.012 |
0.004 |
0.005 |
> β > |
0.019 |
Manure tanks |
0.092 |
0.050 |
-0.006 |
> β > |
0.189 |
Cattle |
0.002 |
0.004 |
-0.005 |
> β > |
0.010 |
Extensive culture × manure tanks |
-0.004 |
0.002 |
-0.008 |
> β > |
-0.001 |
Extensive culture × cattle |
-0.000 |
0.000 |
-0.000 |
> β > |
0.000 |