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Table 2 Water environmental properties in S. erectum habitats in July and September 2013 (A, n = 8; B, n = 3)

From: Establishment strategy of a rare wetland species Sparganium erectum in Korea

  July September
Region Community A Community B p value t value Community A Community B p value t value
pH 6.15 (0.11) 6.54 (0.10) *** −5.402 6.30 (0.23) 6.82 (0.15) ** −3.625
EC (μs/cm) 192.9 (25.7) 101.6 (10.9) *** 5.806 269.3 (117.5) 86.0 (1.6) * 2.611
Turbidity (NTU) 2.2 (1.5) 1.0 (0.3) n.s 1.364 22.1 (53.3) 1.2 (0.2) n.s 0.672
NO3-N (mg/L) 6.2 (3.4) 1.8 (0.08) n.s 2.155 4.2 (4.0) 1.4 (0.6) n.s 1.918
NH4-N (mg/L) 0.1 (0.1) 0.1 (0.0) n.s 0.502 0.5 (0.9) 0.0 (0.0) n.s 0.906
PO4-P (mg/L) 0.0 (0.0) 0.0 (0.0) n.s 0.358 0.0 (0.0) 0.0 (0.0) n.s 1.528
K+ (mg/L) 16.6 (9.7) 8.2 (1.2) n.s 1.439 26.3 (8.4) 8.1 (2.7) ** 3.587
Na+ (mg/L) 8.8 (4.2) 5.4 (0.9) n.s 1.371 10.9 (1.9) 4.7 (1.6) *** 4.933
Ca2+ (mg/L) 19.5 (8.1) 13.4 (1.4) n.s 1.245 35.8 (12.9) 15.5 (3.1) * 2.628
Mg2+ (mg/L) 4.5 (2.2) 1.6 (0.5) n.s 2.126 3.7 (1.8) 0.0 (0.0) *** 5.651
  1. Values are means (S.D.)
  2. ***, p < 0.001; **, 0.001 < p < 0.01; *, 0.01 < p < 0.05; n.s = no significance, 0.05 < p