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Seasonal and Spatial Distribution of Iron Precipitating Heterotrophs in Water and Sediments of Fish Ponds of Differing Farming Managements
Author(s) -
Jana B. B.,
Patel G. N.
Publication year - 1986
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19860710213
Subject(s) - polyculture , monoculture , heterotroph , environmental science , shrimp farming , population , ecology , fish farming , mariculture , spatial distribution , population density , fishery , biology , aquaculture , fish <actinopterygii> , bacteria , geography , genetics , demography , sociology , remote sensing
Population densities of primarily iron precipitating heterotrophs (metal‐precipitating non oxidizing bacteria) were estimated in water and sediments of ponds being used for polyculture, monoculture and traditional systems of fish farming over a period of two and a half years. Spatial differences in microbial density in the ponds were related to the organic loading of the farm site and the type of farming. The highest bacterial populations occurred in November and the lowest in summer. Nitrite concentration was mainly responsible for such seasonal changes.