Ecological Archives A018-040-A4

Arnaud Ghilain and Marc Bélisle. 2008. Breeding success of Tree Swallows along a gradient of agricultural intensification. Ecological Applications 18:1140–1154.

Appendix D. ΔmAICc of the models explaining breeding success by Tree Swallows at seven spatial scales along a gradient of agricultural intensification in southern Québec, 2004–2006.

TABLE D1. ΔmAICc of the models explaining breeding success by Tree Swallows at seven spatial scales along a gradient of agricultural intensification in southern Québec, 20042006. Models are linear mixed models with farm ID as random effect. See Table 1 for variable definition and justification.

 

Scale (km)

Brood or Clutch

Intensive Culture

Extensive Culture

Weather

Weather + Intensive

Weather + Extensive

Brood or Clutch + Weather

Brood or Clutch + Intensive

Brood or Clutch + Extensive

                     

Clutch size

1

10.17

2.02

16.70

-

-

-

-

-

-

 

2

10.17

3.03

17.14

-

-

-

-

-

-

 

3

10.17

3.96

13.89

-

-

-

-

-

-

 

4

10.17

1.16

10.68

-

-

-

-

-

-

 

5

10.17

1.64

11.95

-

-

-

-

-

-

 

10

10.17

2.83

11.66

-

-

-

-

-

-

 

20

10.17

0.00

2.13

-

-

-

-

-

-

                     

Hatching probability

1

3.11

99.51

107.15

110.88

99.96

108.20

5.79

0.00

2.20

 

2

3.11

104.85

112.99

110.88

105.48

114.05

5.79

4.74

6.45

 

3

3.11

107.16

113.58

110.88

107.81

114.65

5.79

5.86

6.27

 

4

3.11

107.40

112.32

110.88

107.96

113.37

5.79

6.70

4.91

 

5

3.11

107.73

112.16

110.88

108.36

113.32

5.79

6.85

4.34

 

10

3.11

107.56

112.83

110.88

108.32

113.79

5.79

6.58

6.40

 

20

3.11

104.25

106.50

110.88

105.15

107.70

5.79

4.51

7.66

                     

Number of fledglings

1

14.75

15.77

10.07

18.26

19.08

13.15

-

-

-

 

2

14.75

11.11

7.59

18.26

14.19

10.59

-

-

-

 

3

14.75

12.14

3.98

18.26