Table 5

Stepwise multiple regression models explaining range size

Lineage

R2

F

P

Variables

β

t

P


Ilybius

75.5

23.66

0.000

maxLat

0.38

3.16

0.004

PVR24

-0.50

-4.39

0.000

PVR20

0.35

3.09

0.005

Deronectes

63.2

18.03

0.000

maxLat

0.70

5.26

0.000

PVR19

0.31

2.34

0.030

Enicocerus

98.6

121.15

0.000

maxLat

0.52

6.89

0.001

maxLon

0.47

7.83

0.001

PVR4

-0.18

-2.83

0.036

Limnebius

75.9

11.01

0.007

maxLat

0.55

2.96

0.021

PVR5

-0.60

-3.18

0.016

H. gracilis

69.2

12.35

0.002

maxLat

0.58

3.33

0.007

PVR1

-0.45

-2.56

0.027

H. dentipes

72.3

46.96

0.000

maxLat

0.85

6.85

0.000

Phothydraena

81.8

13.49

0.006

minLat

-0.51

-2.89

0.028

Habitat1

0.69

3.94

0.008

Graptodytes

88.8

36.89

0.000

maxLat

0.68

7.06

0.000

PVR8

-0.32

-3.36

0.005

Habitat0

-0.26

-2.75

0.016

Hydroporus

91.7

69.29

0.000

maxLat

0.70

10.93

0.000

PVR4

-0.36

-5.77

0.000

PVR7

-0.17

-2.91

0.008

PVR21

0.19

3.15

0.004

Hydrochus

78.6

18.31

0.000

maxLat

0.59

3.72

0.004

PVR8

0.46

2.90

0.016


Summary table for the stepwise multiple regression models explaining range size in the different lineages. We show for each model the explained variance (R2 in percentage) and its significance (F and P values). For each variable included in the model, the fitted standardized regression coefficient (β) and its corresponding significance (t and P values) are shown. Variable codes as in Table 2. PVR# refers to phylogenetic vectors used in PVR approach.

Abellán and Ribera BMC Evolutionary Biology 2011 11:344   doi:10.1186/1471-2148-11-344

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