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Table 1 Average nutrient and environmental variables and ANOVA results in reference, transition and impacted sites of several south Florida wetlands

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

Variable Nutrient zone ANOVA
Reference Transition Impacted F P
TP (μg L−1) 6.3 ± 1.5 13.7 ± 1.1 46.2 ± 22.3 7.23 0.013
TN (mg L−1) 1.5 ± 0.5 1.6 ± 0.2 2.3 ± 0.5 3.47 0.076
SRP (μg L−1) 1.3 ± 0.6 4.7 ± 0.6 17.5 ± 13.4 7.94 0.004
DIN (μg L−1) 0.12 ± 0.14 0.19 ± 0.20 0.30 ± 0.20 2.89 0.264
TN:TP (molar ratio) 562 ± 350 259 ± 34 126 ± 48 9.34 ≤ 0.001
pH (SU) 7.0 ± 0.6 7.1 ± 0.1 7.3 ± 0.1 0.77 0.49
Sulfate (mg L−1) 20.1 ± 32.0 16.3 ± 11.9 47.6 ± 13.4 3.63 0.07