ISSN:
1573-5117
Keywords:
nitrogen fixing bacteria
;
polyculture
;
monoculture
;
fish ponds
;
spatial distribution
;
seasonal distribution
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Enumeration of nitrogen fixing bacterial population in water and sediment samples of six fish farming ponds (polyculture, monoculture and traditional systems) over a period of two and a half years revealed significant differences between the culture systems with maximal and lowest counts in the monoculture and traditional systems, respectively. Polynomial equations of the 2nd to 4th degree were used to represent the observed seasonal data in these ponds. The bacterial populations peaked in summer, while the lowest count was observed in winter. The environmental factors such as pH, different species of nitrogen, dissolved organic carbon were responsible for the seasonal changes in nitrogen fixing bacteria.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00004171
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