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Table 5 Modeling analysis of pH and Ft effects on the proportion of successfully/unsuccessfully fertilized eggs of S. droebachiensis

From: CO2-induced fertilization impairment in Strongylocentrotus droebachiensis collected in the Arctic

Models

χ2

df

p value

Conf.Int 2.5–97.5 %

cbind (SF, UF) ~ pH + Ft + pH:Ft + (1|Exp) + (1|Nr)

pH (24.446)

1

7.6e−07***

(1.54)–(3.60)

Ft (1,868)

1

0.172

(−1.10)–(6.08)

pH:Ft (1,580)

1

0.209

(−0.74)–(0.16)

cbind (SF, UF) ~ pH + Ft + (1|Exp) + (1|Nr)

pH (68.427)

1

<2.2e−16***

(1.51)–(2.46)

Ft (7,251)

1

0.007**

(0.05)–(0.35)

cbind (SF, UF) ~ pH + (1|Exp) + (1|Nr)

pH (63.892)

1

1.3e−15***

(1.49)–(2.48)

cbind (SF, UF) ~ Ft + (1|Exp) + (1|Nr)

Ft (4.3114)

1

0.03786*

(0.01)–(0.40)

  1. Significance levels: p < 0.05 (*), p < 0.01 (**) and p < 0.001 (***), N = 106