SHRIVASTAVA, Awadhesh .
Annual Biodiversity and recurrence of Cyanobacterial flora of Bilaspur in Chhattisgarh state of India.
Survey of three different habitat for two years to explore the diversity from unicellular to multicellular, filamentous unbranched, pseudobranched to branched, non-heterocystous and heterocystous of promising species of Cyanobacteria from Bilaspur district of Chhattisgarh state. A total 48 species of Cyanobacteria of 18 genera were collected and identified. Out of 48 Cyanobacterial species collected 42 species were contributed by the paddy fields alone comprising of 19 non nitrogen fixing and 23 nitrogen fixing forms Maximum number of genera belongs to order Nostocales and minimum to Stigonemetales were observed. Of the 36 species collected 12 were nitrogen fixing and 24 were non – nitrogen fixing forms. Most abundant Cyanobacterium was Nostoc as heterocystous and Oscillitoria as non-heterocystous from paddy fields while Microcystis from ponds/ditches. Apparently a 5-month period, favourable most for prominent Cyanabacterial presence in all the three survey sites of ten different zones. In the month of January, February and July the Cyanobacteria were found absent from a small number of study sites. In contrast, from the month of March to June, sporadic presence of Cyanobacteria was worked, limited to only a few study sites considering most of the survey zones. Both year data confirmed this pattern of the natural occurrence of Cyanobacteria in the marked survey zone. These data further suggest that except for the organisms, all the rest 43 cyanobacterial species collected in the first year of study, could be located during the second year in one or the other survey sites(s)/ zone (s) of the 43 recurrent cyanobacterial species mostly were found to be persistent to the same study sites, however, some of the species were found at different sites as well during the second year of survey. It is important to mention here that despite variation in the period of occurrence of the various Cyanobacteria species in a year the two pond species of Microcystis, i.e. M. aeruginosa and M. pseudofilamentosa were invariably found throughout the year.
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1 - Govt. College UTAI, Department of Botany, , 48/Ii street 6 A Maitri nagar , BHILAI, CHHATTISGARH, Bhilai, CHHATTISGARH, INDIA, 490 006, INDIA
Presentation Type: Oral Paper:Papers for Sections
Location: 552A/Convention Center
Date: Monday, August 2nd, 2010
Time: 1:30 PM