Abstract
Patna Bird Sanctuary is located at Jalesar in the Etah district of U.P. It is spread in 108 hectares and has been declared as a Bird Sanctuay in 1991. Patna jheel is a typical rainfed wetland of Gangetic plain. It receives most of its water from north-west monsoon and some water from different nallas entering into jheel. Physico-chemical and biological characteristics of lake were studied during April 2013 to March 2014, to correlate the abundance of different flora and fauna. Study revealed richness in phosphate and nitrate. The main source of this richness in the lake has been traced out due to washing, bathing, agricultural activities and cultivation of trapa and growth of macrophytes. The jheel was marked with date trees (Phoenix sylvestrix) and harbors about 2, 00,000 birds belonging to over 200 different species. The border of jheel has been surrounded by Ipomea carnea tracts, serving good nesting ground for resident birds. Macrophytes comprising of submerged (Hydrilla verticillata, Ceratophyllum demersum, Vallisnaria spiralis, Potamogeton crispus and Najas), free floating (Salvinia, Azolla, Wolffia and Eichhornia) and rooted floated (Nymphoides cristata and N. indica). In some parts Ipomea aquatica were also observed.
Highlights
Freshwater biodiversity includes life which is living in freshwater or adapted to live in or around freshwater habitats such as, insects, plankton, macrophytes, zoobenthic invertebrates, fishes, amphibians, reptiles, waterbirds and aquatic mammals
The data on various physico-chemical parameters of Patna Lake water are presented in Table-1
Due to shallowness of study sites the water temperature has shown a tendency to closely follow the air temperature. This type of observations was reported by Singhal et al [29]
Summary
Freshwater biodiversity includes life which is living in freshwater or adapted to live in or around freshwater habitats such as, insects, plankton, macrophytes, zoobenthic invertebrates, fishes, amphibians, reptiles, waterbirds and aquatic mammals. It provides a variety of ecosystem services embracing food, fiber, recreational and cultural benefits to the people. Water quality assessment involves analysis of physico-chemical and biological parameters which represent trophic status of the ecosystem. Various previous workers [1 – 21], have made contribution in the field of physico-chemical and biological analysis. The present investigation attempted to study the correlation between physico-chemical parameters and planktonic biodiversity of Patna jheel in Jalesar, Etah
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