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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