Secondary Productivity of Zooplanktons in Lotic Water of River Saryu and Ganga at Saran District, Bihar, India
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The role of Zooplankton in the aquatic food chain is very important as is it a member of trophic level two because it is secondary producer as well as primary consumer. The productivity of zooplankton will reflect the status of the aquatic ecosystem. Scanty reports are available on the secondary productivity of river Ganga. The present study was conducted in stretch of river Saryu and Ganga in Saran district, Bihar that was unexplored earlier. Secondary productivity of zooplankton was estimated following method suggested by Dalai & Parulekar (1986) based on displacement volume and Mangas and Garcia (1991). Zooplankton secondary productivity was in higher range 70.12-227.89 µg during winter followed by summer and monsoon in both the rivers. Zooplankton group wise individual biomass was as follows: (cladocerans > copepods > rotifers). However average biomass indicated that rotifers were dominating zoo plankton in the biomass contribution causing secondary production of zooplankton. The study identifies secondary productivity as a more integrative tool for the assessment of the ecosystem function.
-  Bilgrami, K.S. and Munshi J. S.D. (1979): Limnological Survey and impact of human activities on the river Ganges (Barauni to Farakka.) Tech. Report submitted to D.S.T. 91p.
-  Bilgrami, K.S. and Munshi J. S.D.(1985): Ecology of River Ganges. Patna- Farakka. Impact of human activities. The Allied Press Bhagalpur. 97p.
-  Boysen, O., Enne, E., Hagen, W., Hubold,G. and Piatkowski, U. (1991): Zooplankton biomass in the covered Weddell sea, Antarctica. Mar. Biol. 11: 227-235.
-  Chaurasiya, S. K. (1985): Diel periodicity of zooplankton its composition and production. Ph. D. Thesis, Dr. Hari Singh Gour Univ., Sagar. P. 282.
-  Cordozo, A.P., Bersano, J.G.F. and Ahmad, W.J.A. (2007): Composition, density and biomass of zooplankton in culture pond of Litopnaeus vanname (Decapoda: Pennaeidae) in southern Brazil. Brazilian J. Aqua. Sci. and Tech. 11(11): 13-20.
-  Culver, D.A. and Brunskill, G.J. (1969): Fayheville Green lake study of primary production and zooplankton in a meromictic marl lake. Limnol. Oceanogr. 14: 862-973.
-  Gonazalez, E. J., Matos, M.L., Panaherrera, C. and Merayo, S. (2011): zooplankton abundance, biomass and trophic status in some Venezuelan reservoir In: Biomass and Remote sensing of Biomass ed. Islam Atazadeh.
-  Manges, E. and Garcia, H. (1991): Seasonal fluctuation of Zooplankton biomass in Lake Xolottan (Managua). Hydrobiol. Bull. 25(2): 157-162.
-  Nasar, S.A.K. (1977): Investigations on the seasonal periodicity of zooplankton in a freshwater pond in Bhagalpur, India. Acta. Hydrochim. Hydrobiol. 5(6): 577-584
-  Nayar, Sasi, Gupta, T.R.C. and Gowda, G. (1991): Secondary productivity and zooplankton biomass in a tropical coastal lagoon near Manglore. South West Coast of India. Indian J. Fish. 46(3): 281-288.
-  Singh, S.B. and Sahai, R. (1978): Seasonal fluctuation of zooplankton population in relation to certain physico-chemical factors of a pond. Geobios. 5: 228-230.
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