Ecological Archives A019-051-A2

Laura R. Prugh. 2009. An evaluation of patch connectivity measures. Ecological Applications 19:1300–1310.

Appendix B. Comparison of seven connectivity models used to predict the colonization patterns of 15 metapopulations.

TABLE B1. Comparison of seven connectivity models used to predict the colonization patterns of 15 metapopulations (see Table 1 for model descriptions and Table 2 for metapopulation descriptions). Akaike Information Criterion (AIC) values and AIC model weights(wi) are shown. Lower AIC values indicate a better model fit, and higher AIC weights (wi) indicate greater model support (on a scale from 0 to 1). The pR2 value measures the amount of deviance in occupancy explained by each connectivity model. The Z value, or Wald statistic, is the regression coefficient divided by its standard error. The P value associated with each Z value is shown.

Comparison

Model

Metapopulation #

2

3

5

10

11

12

13

14

16

AIC

BH

176.3

106.6

25.7

37.8

80.8

89.7

67.0

109.4

14.3

 

BS

174.9

105.6

22.1

34.7

67.8

52.3

59.0

109.7

10.7

 

S

177.1

106.2

19.7

31.2

62.4

43.6

51.7

105.2

15.2

 

AS

175.2

106.1

13.0

29.5

62.8

59.0

51.8

106.2

15.1

 

NH

176.8

108.1

25.7

37.9

76.6

91.7

66.8

108.5

16.0

 

NS

171.9

103.8

15.3

28.8

76.0

60.5

57.7

100.7

14.9

 

A*NS

155.4

107.3

--

26.9

76.5

54.2

59.8

103.2

18.5

wi

BH

0

0.10

0.001

0.002

0

0

0

0.01

0.11

 

BS

0

0.16

0.01

0.01

0.04

0.01

0.01

0.01

0.62

 

S

0

0.12

0.03

0.06

0.52

0.98

0.48

0.07

0.07

 

AS

0

0.13

0.74

0.15

0.44

0

0.47

0.04

0.07

 

NH

0

0.05

0.001

0.002

0

0

0

0.01

0.04

 

NS

0

0.39

0.22

0.22

0

0

0.02

0.67

0.08

 

A*NS

1

0.07

--

0.55

0

0

0.01

0.19

0.01

p-R2

BH

0.01

0.03

0.001

0.01

0.01

0.03

0.001

0.003

0.15

 

BS

0.02

0.04

0.17

0.10

0.18

0.45

0.13

0

0.44

 

S

0.004

0.03

0.28

0.20

0.25

0.55

0.24

0.04

0.07

 

AS

0.01

0.04

0.59

0.25

0.24

0.38

0.24

0.03

0.08

 

NH

0.01

0.002

0.001

0.005

0.06

0.01

0.003

0.01

0.002

 

NS

0.03

0.08

0.48

0.27

0.07

0.36

0.15

0.09

0.10

 

A*NS

0.15

0.09

--

0.45

0.12

0.48

0.18

0.10

0.13

Z-value

BH

1.13

1.24

0.11

0.53

0.76

1.29

0.18

0.47

-1.27

 

BS

1.61

1.59

1.82

1.82

3.34

3.89

2.00

0.09

-0.004

 

S

0.84

1.42

1.39

2.28

2.96

2.73

2.20

1.78

0.81

 

AS

1.56

1.45

1.86

2.37

2.88

3.42

2.24

1.75

0.97

 

NH

-1.00

-0.31

-0.14

-0.39

2.14

0.88

0.43

1.08

0.15

 

NS

-2.50

-2.16

-2.24

-2.73

-2.42

-4.55

-2.77

-2.88

0.93

P-value

BH

0.26

0.21

0.91

0.60

0.45

0.20

0.86

0.64

0.20

 

BS

0.11

0.11

0.07

0.07

0.0009

0.0001

0.05

0.93

1.00

 

S

0.40

0.15

0.16

0.02

0.003

0.01

0.03

0.07

0.42

 

AS

0.12

0.15

0.06

0.02

0.004

0.0006

0.03

0.08

0.33

 

NH

0.32

0.76

0.89

0.69

0.03

0.38

0.67

0.28

0.88

 

NS

0.01

0.03

0.02

0.01

0.02

<0.00001

0.01

0.004

0.35

Table B1 contd.

Comparison

Model

Metapopulation #

17

18

19

20

21

24

AIC

BH

17.9

14.4

10.9

22.5

16.3

42.9

 

BS

17.6

14.8

--

20.6

17.6

43.4

 

S

11.1

14.5

16.1

19.7

17.8

42.8

 

AS

13.3

13.6

14.1

22.4

18.3

40.2

 

NH

17.4

14.1

14.7

22.5

17.9

40.6

 

NS

17.1

14.8

8.7

20.5

18.4

35.2

 

A*NS

--

15.4

--

23.5

21.9

33.2

wi

BH

0.02

0.14

0.23

0.08

0.31

0.01

 

BS

0.03

0.12

--

0.20

0.16

0.004

 

S

0.67

0.14

0.02

0.31

0.14

0.01

 

AS

0.22

0.22

0.04

0.08

0.12

0.02

 

NH

0.03

0.17

0.03

0.08

0.14

0.02

 

NS

0.03

0.12

0.68

0.22

0.11

0.26

 

A*NS

--

0.09

--

0.05

0.02

0.69

p-R2

BH

0

0.03

0.44

0

0.15

0.05

 

BS

0.03

0

--

0.10

0.05

0.03

 

S

0.49

0.03

0.01

0.15

0.04

0.05

 

AS

0.33

0.11

0.17

0.01

0.01

0.11

 

NH

0.04

0.06

0.13

0

0.04

0.10

 

NS

0.06

0.01

0.62

0.11

0

0.24

 

A*NS

--

0.31

--

0.16

0.04

0.38

Z value

BH

-0.18

-0.61

-1.46

-0.06

0.94

1.23

 

BS

0.63

0.05

--

1.38

0.90

0.76

 

S

-1.82

0.53

0.27

1.50

-0.76

1.21

 

AS

1.46

-0.99

-1.24

0.37

-0.37

1.87

 

NH

0.66

0.77

1.16

-0.06

-0.68

-1.81

 

NS

0.88

0.23

1.27

-1.37

-0.11

-2.70

P value

BH

0.86

0.54

0.15

0.96

0.35

0.22

 

BS

0.53

0.96

--

0.17

0.37

0.45

 

S

0.07

0.60

0.79

0.13

0.45

0.23

 

AS

0.14

0.32

0.22

0.71

0.71

0.06

 

NH

0.51

0.44

0.25

0.95

0.50

0.07

 

NS

0.38

0.82

0.21

0.17

0.91

0.01


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