Depth profile exploration of enzyme activity and culturable microbial community from the oxygen-starved soil of Sundarban mangrove forest, India
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چکیده
Populations of culturable microbes and activeties of dehydrogenase & β-D glucosidase were found maximum in surface soil and decreased with increase in depth in Sundarban mangrove environment. The maximum (13.529 × 10 C.F.U g dry weight of soil) and minimum (11.547 × 10 C.F.U g dry weight of soil) total microbial populations in surface soil were recorded during post-monsoon and monsoon respectively. At 60 cm depth, the minimum (6.396 × 10 C.F.U g dry weight of soil) and maximum (8.003 × 10 C.F.U g dry weight of soil) numbers of total microbial populations were observed during monsoon and post-monsoon respectively. A decreasing trend of total microbial load, enzyme activities and nutrient status with organic carbon were found with increase in depth throughout the year. Present study revealed the relationship among depth integrated variations of physico-chemical components (viz. soil temperature, pH, moisture, organic-C, Nitrate-Nitrogen, and available-P) and microbial populations as well as activity of dehydrogenase and -D glucosidase enzymes.
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