Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India
Different groups of microorganisms are present in mangrove areas, and they perform complex interactions for nutrient and ecological balances. Since little is known about microbial populations in mangroves, this study analyzed the microbial community structure and function in relation to soil physico...
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| Formaat: | Artikel |
| Taal: | English |
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Universidad de Costa Rica
2012-06-01
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| Reeks: | Revista de Biología Tropical |
| Onderwerpen: | |
| Online toegang: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000200031&lng=en&tlng=en |
| _version_ | 1827161892785750016 |
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| author | Rashmi Ranjan Mishra Manas Ranjan Swain Tushar Kanti Danga Hrudayanath Thatoi |
| author_facet | Rashmi Ranjan Mishra Manas Ranjan Swain Tushar Kanti Danga Hrudayanath Thatoi |
| author_sort | Rashmi Ranjan Mishra |
| collection | DOAJ |
| description | Different groups of microorganisms are present in mangrove areas, and they perform complex interactions for nutrient and ecological balances. Since little is known about microbial populations in mangroves, this study analyzed the microbial community structure and function in relation to soil physico-chemical properties in Bhitarkanika, a tropical mangrove ecosystem in India. Spatial and seasonal fluctuations of thirteen important groups of microorganisms were evaluated from the mangrove forest sediments during different seasons, along with soil physico-chemical parameters. The overall microbial load (x10(5)cfu/g soil) in soil declined in the order of heterotrophic, free living N2 fixing, Gram-negative nitrifying, sulphur oxidizing, Gram-positive, spore forming, denitrifying, anaerobic, phosphate solubilizing, cellulose degrading bacteria, fungi and actinomycetes. Populations of the heterotrophic, phosphate solubilizing, sulphur oxidizing bacteria and fungi were more represented in the rainy season, while, Gram-negative, Gram-positive, nitrifying, denitrifying, cellulose decomposing bacteria and actinomycetes in the winter season. The pool size of most of other microbes either declined or maintained throughout the season. Soil nutrients such as N, P, K (Kg/ha) and total C (%) contents were higher in the rainy season and they did not follow any common trend of changes throughout the study period. Soil pH and salinity (mS/cm) varied from 6-8 and 6.4-19.5, respectively, and they normally affected the microbial population dynamics. Determination of bacterial diversity in Bhitarkanika mangrove soil by culture method showed the predominance of bacterial genera such as Bacillus, Pseudomonas, Desulfotomaculum, Desulfovibrio, Desulfomonas, Methylococcus, Vibrio, Micrococcus, Klebsiella and Azotobacter. Principal component analysis (PCA) revealed a correlation among local environmental variables with the sampling locations on the microbial community in the mangrove soil. Rev. Biol. Trop. 60 (2): 909-924. Epub 2012 June 01. |
| first_indexed | 2024-03-12T10:43:09Z |
| format | Article |
| id | doaj.art-f42404ec34bf4569ab58746c60ab7000 |
| institution | Directory Open Access Journal |
| issn | 0034-7744 |
| language | English |
| last_indexed | 2025-03-21T00:36:09Z |
| publishDate | 2012-06-01 |
| publisher | Universidad de Costa Rica |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-f42404ec34bf4569ab58746c60ab70002024-08-03T06:43:12ZengUniversidad de Costa RicaRevista de Biología Tropical0034-77442012-06-01602909924S0034-77442012000200031Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in IndiaRashmi Ranjan Mishra0Manas Ranjan Swain1Tushar Kanti Danga2Hrudayanath Thatoi3, MITS School of BiotechnologyCollege of Engineering and TechnologyCentral Rice Research InstituteCollege of Engineering and TechnologyDifferent groups of microorganisms are present in mangrove areas, and they perform complex interactions for nutrient and ecological balances. Since little is known about microbial populations in mangroves, this study analyzed the microbial community structure and function in relation to soil physico-chemical properties in Bhitarkanika, a tropical mangrove ecosystem in India. Spatial and seasonal fluctuations of thirteen important groups of microorganisms were evaluated from the mangrove forest sediments during different seasons, along with soil physico-chemical parameters. The overall microbial load (x10(5)cfu/g soil) in soil declined in the order of heterotrophic, free living N2 fixing, Gram-negative nitrifying, sulphur oxidizing, Gram-positive, spore forming, denitrifying, anaerobic, phosphate solubilizing, cellulose degrading bacteria, fungi and actinomycetes. Populations of the heterotrophic, phosphate solubilizing, sulphur oxidizing bacteria and fungi were more represented in the rainy season, while, Gram-negative, Gram-positive, nitrifying, denitrifying, cellulose decomposing bacteria and actinomycetes in the winter season. The pool size of most of other microbes either declined or maintained throughout the season. Soil nutrients such as N, P, K (Kg/ha) and total C (%) contents were higher in the rainy season and they did not follow any common trend of changes throughout the study period. Soil pH and salinity (mS/cm) varied from 6-8 and 6.4-19.5, respectively, and they normally affected the microbial population dynamics. Determination of bacterial diversity in Bhitarkanika mangrove soil by culture method showed the predominance of bacterial genera such as Bacillus, Pseudomonas, Desulfotomaculum, Desulfovibrio, Desulfomonas, Methylococcus, Vibrio, Micrococcus, Klebsiella and Azotobacter. Principal component analysis (PCA) revealed a correlation among local environmental variables with the sampling locations on the microbial community in the mangrove soil. Rev. Biol. Trop. 60 (2): 909-924. Epub 2012 June 01.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000200031&lng=en&tlng=enmangrove ecosystemmicrobial populationsoil nutrient contentseasonal variation |
| spellingShingle | Rashmi Ranjan Mishra Manas Ranjan Swain Tushar Kanti Danga Hrudayanath Thatoi Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India Revista de Biología Tropical mangrove ecosystem microbial population soil nutrient content seasonal variation |
| title | Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India |
| title_full | Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India |
| title_fullStr | Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India |
| title_full_unstemmed | Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India |
| title_short | Diversity and seasonal fluctuation of predominant microbial communities in Bhitarkanika, a tropical mangrove ecosystem in India |
| title_sort | diversity and seasonal fluctuation of predominant microbial communities in bhitarkanika a tropical mangrove ecosystem in india |
| topic | mangrove ecosystem microbial population soil nutrient content seasonal variation |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000200031&lng=en&tlng=en |
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