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Table 1 Physico-chemical parameters of the water in the Río Tinto sampling site.

From: Environmental transcriptome analysis reveals physiological differences between biofilm and planktonic modes of life of the iron oxidizing bacteria Leptospirillum spp. in their natural microbial community

  2004 2005
pH 1.8 ± 0.02 1.82 ± 0.07
T (°C) 21 ± 0.5 20.1 ± 0.5
Conductivity (mS Cm-1) 17.63 + 0.09 27.3 ± 0.01
Salinity 10.45 + 0.05 16.65 ± 0.05
O2 (% sat.) ------- 13.1 ± 3
SO4= (mg L-1) 70200 ± 220 128000 ± 410
Fe tot (mg L-1) 13970 ± 230 19540 ± 2680
Fe+2/Fe+3 0.034 0.052
Formate, HCOO- (mg L-1) 2.8 (0.06 mM) ULD
Acetate, CH3COO- (mg L-1) 82.68 (1.36 mM) ULD
  1. Other acetate measurements: 3.54 mM on June 2006, or 0.34 mM on July 2008.
  2. ULD, under the limit of detection.