The role of microbial processes in sediment phosphorus turnover


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Authors

  • S K Manna Central Inland Fisheries Research Institute (ICAR), Barrackpore, Kolkata - 700 120, India
  • A B Som Central Inland Fisheries Research Institute (ICAR), Barrackpore, Kolkata - 700 120, India
  • S Samanta Central Inland Fisheries Research Institute (ICAR), Barrackpore, Kolkata - 700 120, India

Abstract

Sediment may act as a sink and source of phosphorus to water. The sediment phosphorus release is seasonal, being influenced by temperature and microbial activity. In the present investigation role of sediment microbial electron transport system activity (ETSA) and alkaline phosphatase for phosphorus regeneration were studied in peak summer in top 0-2 cm sediments from seven inland water bodies. Microbial oxidation was high and typically influenced by organic matter deposition. Sediments were highly mineralised and
bacteria were possibly starved of directly utilizable carbon. Oxic mineralization was the dominating process for phosphorus release at least in sewage fed ponds, beel and two freshwater ponds. At least 50% variations in sediment soluble reactive phosphorus could be explained by phosphatase activity. Study
suggests that alkaline phosphatase and microbial oxidation are closely coupled processes in both carbon and phosphorus mineralization.

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Author Biographies

  • S K Manna, Central Inland Fisheries Research Institute (ICAR), Barrackpore, Kolkata - 700 120, India
    Central Inland Fisheries Research Institute (ICAR), Barrackpore,
    Kolkata - 700 120, India
  • A B Som, Central Inland Fisheries Research Institute (ICAR), Barrackpore, Kolkata - 700 120, India
    Central Inland Fisheries Research Institute (ICAR), Barrackpore,
    Kolkata - 700 120, India
  • S Samanta, Central Inland Fisheries Research Institute (ICAR), Barrackpore, Kolkata - 700 120, India
    Central Inland Fisheries Research Institute (ICAR), Barrackpore,
    Kolkata - 700 120, India

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Issue

Vol. 51 No. 2 (2004)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Manna, S. K., Som, A. B., & Samanta, S. (2011). The role of microbial processes in sediment phosphorus turnover. Indian Journal of Fisheries, 51(2), 139-145. https://epubs.icar.org.in/index.php/IJF/article/view/7180