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Table 3 Relative contribution of environmental variable to the first two axes of the PCA analyses

From: Influence of environmental factors on the genetic variation of the aquatic macrophyte Ranunculus subrigidus on the Qinghai-Tibetan Plateau

Environmental variable

PC1 (39.0%)

PC2 (23.5%)

Climate

altitude

0.129

0.615

GST

0.173

0.627

ELT

−0.167

0.201

TS

−0.459

0.014

AP

−0.541

−0.141

Water quality

pH

−0.488

0.112

salinity

0.430

−0.394

  1. GST Growing season temperature, ELT Extreme low temperature, TS Temperature seasonality, AP Annual precipitation