ECOLOGY OF FRESHWATER AND LOW SALINE SEWAGE-FED WETLANDS OF WEST BENGAL WITH REFERENCES TO BIO-DIVERSITY AND AQUA-CROP PRODUCTION


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Authors

  • AMITABHA GHOSH Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120
  • H C KARMAKAR Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120
  • R N MISRA Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120
  • T CHATTERJEE Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120
  • B B Das Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120
  • D Saha Central Inland Fisheries Research Institute, Barrackpore, Kolkata - 700 120

https://doi.org/10.47780/jifsi.38.2.2006.62692

Abstract

Physico-chemical and biological conditions of water in two types of sewage-fed wetlands viz. freshwater and low-saline investigated during 2001 to 2003 revealed variation in fish, macro-zoo-benthos and plankton diversity in relation to differences in limno-chemical parameters. Mean salinity in the low-saline wetlands was higher than the freshwater bheri. The primary production (Mean 502.72 mg Cm-3 hr-1) in the freshwater sewage-fed wetland was higher compared to that of the low-saline wetlands. Production of fish and prawn was found to be higher in the freshwater wetland. Oreochromis niloticus and O. mossambicus contributed substantially to fish production from both these wetlands. Net zooplankton in both types of wetlands had an edge over phytoplankton. In the freshwater wetland gastropods were the principal
macro-benthic fauna while in the low-saline bheries gastropods and tanaids mainly constituted the benthic macrofauna.

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Submitted

2016-10-31

Published

2020-10-22

Issue

Vol. 38 No. 2 (2006): Journal of Inland Fisheries Society of India 38 (2)

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How to Cite

GHOSH, A., KARMAKAR, H. C., MISRA, R. N., CHATTERJEE, T., Das, B. B., & Saha, D. (2020). ECOLOGY OF FRESHWATER AND LOW SALINE SEWAGE-FED WETLANDS OF WEST BENGAL WITH REFERENCES TO BIO-DIVERSITY AND AQUA-CROP PRODUCTION. Journal of the Inland Fisheries Society of India, 38(2), 20-25. https://doi.org/10.47780/jifsi.38.2.2006.62692