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. 2015 Jul;11(7):20150506. doi: 10.1098/rsbl.2015.0506

Table 1.

Relationships between the proportion of terrestrial species in major vertebrate clades and their net diversification rates (estimated under three relative extinction fractions), and using two alternate ages for cyclostomes and the vertebrate root [12,13]. AIC, Akaike information criterion; div. rate, diversification rate; prop., proportion.

variables r2 p-value AIC
Erwin et al. [12] tree
div. rate (e = 0) ∼ prop. terrestrial 0.6594 0.0008 75.4384
div. rate (e = 0.5) ∼ prop. terrestrial 0.6615 0.0008 74.8602
adiv. rate (e = 0.9) ∼ prop. terrestrial 0.6685 0.0011 79.8808
ln-species ∼ div. rate (e = 0) 0.8471 <0.0001 40.5479
ln-species ∼ div. rate (e = 0.5) 0.8617 <0.0001 39.4395
ln-species ∼ div. rate (e = 0.9) 0.8765 <0.0001 38.2015
Blair & Hedges [13] tree
div. rate (e = 0) ∼ prop. terrestrial 0.6503 0.0020 70.3817
div. rate (e = 0.5) ∼ prop. terrestrial 0.6431 0.0022 69.7182
div. rate (e = 0.9) ∼ prop. terrestrial 0.6308 0.0026 67.1607
ln-species ∼ div. rate (e = 0) 0.7996 0.0002 39.3290
ln-species ∼ div. rate (e = 0.5) 0.8164 0.0001 38.4524
ln-species ∼ div. rate (e = 0.9) 0.8356 <0.0001 37.3477

aOptimization for PGLS analysis failed, and ordinary least-squares regression was used instead.