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Table 2 Generalized linear mixed model of embryonic survival.

From: Adaptive divergence of the moor frog (Rana arvalis) along an acidification gradient

Random effects

Variance ± SE

Z

P

Family (Pond pH)

35.77 ± 14.78

2.42

0.008

Family (Pond pH) × pH treatment

80.88 ± 14.22

5.69

< 0.001

Fixed effects

ndf

ddf

F

P

Pond pH

7

60.8

1.2

0.319

pH treatment

2

127.4

430.6

< 0.001

Pond pH × pH treatment

14

120.2

2.7

0.002

Block

2

546.0

11.3

< 0.001

Linear contrasts

ndf

ddf

F

P

Pond pH

1

61.3

1.3

0.256

Pond pH × pH treatment (4.0 vs. 4.3)

1

85.6

10.6

0.002

Pond pH × pH treatment (4.0 vs. 7.5)

1

179.1

24.0

< 0.001

Pond pH × pH treatment (4.3 vs. 7.5)

1

174.2

5.2

0.024

  1. Results are shown for eight R. arvalis populations occurring along a pH gradient. Significant effects are highlighted in bold
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BMC Ecology and Evolution

ISSN: 2730-7182

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