Appendix B. ΔmAICc of the models explaining nestbox occupancy by Tree Swallows at seven spatial scales along a gradient of agricultural intensification in southern Québec, 2005–2006.
TABLE B1. ΔmAICc of the models explaining nestbox occupancy by Tree Swallows at seven spatial scales along a gradient of agricultural intensification in southern Québec, 2005–2006. Models are generalized mixed model with logit link and a binomial error distribution with farm ID as random factor (n = 800). See Table 1 for variable definition and justification.
Scale (km) |
Nestbox |
Intensive |
Nestbox + Intensive |
Extensive |
Nestbox + Extensive |
1 |
1.09 |
5992.84 |
4.25 |
12875.42 |
10.87 |
2 |
1.09 |
8561.16 |
3.87 |
13936.19 |
7.66 |
3 |
1.09 |
6220.17 |
3.25 |
13218.33 |
9.85 |
4 |
1.09 |
5445.27 |
1.00 |
11967.63 |
8.58 |
5 |
1.09 |
5845.30 |
1.46 |
13201.81 |
8.97 |
10 |
1.09 |
8540.39 |
0.00 |
10011.45 |
6.71 |
20 |
1.09 |
10215.90 |
2.19 |
7295.85 |
9.47 |
List of models and their variables:
Nestbox = year + competition + clearance + previous year occupancy × previous year fledging success
Intensive = year + water + intensive culture + manure tanks + intensive culture × manure tanks
Nestbox + Intensive = year + competition + clearance + previous year occupancy × previous year fledging success + water + intensive culture + manure tanks + intensive culture× manure tanks
Extensive = year + water + extensive culture + manure tanks + extensive culture × manure tanks + cattle + extensive culture × cattle
Nestbox + Extensive = year + competition + clearance + previous year occupancy × previous year fledging success + water + extensive culture + manure tanks + extensive culture × manure tanks + cattle + extensive culture × cattle