Volume No. 8 Issue No.: 4 Page No.: 919-933 April-June 2014

 

STUDY ON SUSTAINABLE MANAGEMENT OF FISHERIES AND AQUATIC WEEDS OF GOVINDGARH LAKE WITH REFERENCE TO SOME HYDRO BIOLOGICAL PARAMETERS, REWA, MADHYA PRADESH, INDIA

 

Singh Suman* and Nigam Vinodini

Department of Zoology, Govt Girls College, Rewa, Madhya Pradesh (INDIA)

 

Received on : January 05, 2014

 

ABSTRACT

 

The targeted area for this study was Govindgarh Lake, a small irrigation reservoir of district Rewa of Madhya Pradesh, India, situated 22 km South of Rewa town ( 24° 24'N and 81° 15'E) having 307 ha water spread area. This study was carried from 2008 to 2011 for finding physico-chemical parameters, listing of aquatic weeds along with fish faunal diversity with threatening status and biomass management of major carps. Physico-chemical profile of the reservoir presents a rather enigmatic picture with certain parameters indicating an oligotrophic regime while others pointing towards eutrophy. The water temperature varied from 31.5°C to 18.6°C, transparency 55.8-72.4 cm., pH 8.2 8.8, DO 7.2-9.1 mg/l, free CO2 2.1-3.8 mg/l, total alkalinity 136-154 mg/l, Nitrate 1.35-2.32 mg/l phosphate 0.75-2.35 mg/l and chloride was 27.18-38.25. Abundance of Vallisnaria, Potemogeton, Ipomea, Lemna, Azolla, Pistia, Hydrilla, Chara and Myriophyllum was recorded. Mean density of plankton ranged from 1030 to 11185 units 1-1. The presence of Microcystis, Anabaena, Melosira and Ceratium among the plankton is an indication that the reservoir is on its road to eutrophication. 38 texas of 26 genera of 14 family of 8 orders were recorded. Percentage composition of biomass of fishes was 35 % major carps, 20% minor carps, 18% local major carps, 10% weed fishes and 12% others. Abundance of macrophytes and high percentage of cynobacteria is indication of eutrophication of water body. Loss of species of Mystus, Tor and decline in Ompok bimaculatus, Notopterus notopterus and low percentage of harvest of indigenous major carps needs sound monitoring through continuous research programme.

 

Keywords : Sustainable management, Fisheries, Aquatic weeds, Gobindgarh lake, Hydro biological parameters

 

 

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