Abstract
The temporal distribution of bacteria on the surface sediment of the oxbow lake Lagoa do Infernão was studied over a period of one year using different techniques for bacterial counts. Several bacterial groups were differentiated, such a total bacteria and filamentous, heterotrophic, amylolytic, and lipolytic bacteria. The best defined temporal distribution pattern was obtained by total-AO bacterial counts, with a variation of 1.26 × 1010 to 8.58 × 1010 bacteria (g dw)−1 during the dry and rainy seasons, respectively. The electrode potential (Eh) of the surface sediment ranged from − 148 mV during the rainy season to + 371 mV during the dry season. The variations detected on the surface sediment suggest a greater allochthonous contribution of material and bacteria resulting in high decomposing activity during the rainy season.
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Freitas, E.A.C., Godinho-Orlandi, M.J.L. Distribution of bacteria in the sediment of an oxbow tropical lake (Lagoa do Infernão, SP, Brazil). Hydrobiologia 211, 33–41 (1991). https://doi.org/10.1007/BF00008614
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DOI: https://doi.org/10.1007/BF00008614