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Table 3 Spearman rank correlation between stable isotope values and select environmental variables, N = 14 sites

From: Environmental stress and eutrophication in freshwater wetlands: evidence from carbon and nitrogen stable isotopes in cattail (Typha domingensis Pers.)

  δ15N δ13C TP TN
δ13C –0.81***    
TP 0.70** –0.76**   
TN 0.23 –0.28 0.65*  
N/P –0.80*** 0.79*** –0.95*** –0.52*
  1. Note: ***p < 0.001, **p < 0.01, *p < 0.05