MATERIALS AND METHODS
Atpadi Lake is one of the small water-body located in an undisturbed area of Sangli district between
17°40’97.41”N and 74°91’186.66”E (Fig.1). It shows great avian biodiversity which can attract the attention
of bird’s watcher and ornithologist. The lake is surrounded by vast area of deserted land on western side while
crop plantation is seen on eastern and southern side. Around this tank trees, herb and shrub is located with
some stretch of grassland area. However the lake itself fits in the definition of wetland ecosystem. The lake
was free of any type pollution as no human and industrial and other human activities polluting its water are
observed in it catchment area before commence of Tembhu irrigation Project. Previously the avifauna was
observed between June 2008 to May 2010. For observation of avifauna a binocular 10-12×50 Nikon binocular
was used while for photography Nikkon camera was used. Generally the avifauna was observed in the morning
between 6.00 am to 9.00 am in the morning and 4.00 pm to 6.00 pm in the evening. Identification of birds was
done using field guides [1. 2, 9] and searching on internet. Classification of birds was carried out with aid of.
Picture of study area was taken by using website Google earth and graphs were prepared by using the
Microsoft Excel.
Post initiation of Tembhu Irrigation Project the wetland study with special reference to avifauna was
conducted between March 2017 to February 2019. Contamination of water and change in physicochemical and
biological properties were observed due to influx of polluted water coming from Krishna river. The waste
water including domestic waste, industrial waste, etc. is observed coming from megacities like Satara, Karad,
Koyananagar and villages and towns situated in Krishna basin.
RESULTS AND DISCUSSION
During present investigations 44 species of aquatic birds were recorded before initiation of Tembhu Project.
They were belonging 16 families. Incidence of birds of regular occurrence in year 2008- 2009 and 2009-2010
was listed in Table No. 1 Out of all these birds observed at the site, some are resident birds like Kingfisher,
Ibis, cormorant, Heron, Egret, etc. while some are migratory. They are Stork, Flamingo, Goose, etc. They
migrate from Northern hemisphere to India- South-Western Maharashtra and scatter at various wetlands like
this study area. The resident birds are observed in all the months of investigation period but the migratory birds
are observed mostly in the winter months. According to this the population of migratory birds dominated the
tank in winter as during these months the climatic conditions of northern hemisphere are harmful to these
birds; especially in getting food and shelter, while at the same time in India- south-western Maharashtra, this
season is best for getting food and shelter. The migratory species were winter visitors (Pandey 1993, Barman
et al. 1995, Prakash 1999, Jyoti et al. 2001, Kumar and Bohra 2002, Malhotra Manjeet Prakas et al. 2005, Man
Mohan Prakash 2005). The aquatic birds observed in the present investigations were grouped into Grebes,
Cormorants, Herons, Egrets, Ducks, Cranes, Coots, Waders, Terns, King Fisher, Stork and Ibis, etc..
Post Tembhu Irrigation Project when the study was conducted from March 2017 to February 2019 change in
physicochemical and biological properties were observed along with change in winter visitors and local
aquatic avifauna as shown in Table No.2. Due to continuous influx of water for irrigation purpose the
previously observed islands providing nesting and feeding grounds were found permanently submerged. Due
to overflowing of this irrigation tank fall in growth of aquatic micro and macrophytes was seen, thus by
destroying feeding ground of aquatic avifauna.
In the previous study species like Indian Pond Heron, Grey Heron, Giant Heron, Cattle Egret, Smaller Egret,
Little Egret, Large Egret, Brahminy Duck, Pin tail, Open Bill Stork, Spoon Bill, Black Winged Stilt, Little
Ringed Plover, White Breasted Kingfisher, Painted Stork, White Stork, White Necked Stork, etc. were seen
and are carnivorous. They were found feeding upon aquatic insects and their larvae, molluscs, crustaceans,
fishes, tadpoles, frog etc. The species of birds such as Common Pochard, Common Coot, Purple Moorhen,
White Ibis, and Black Ibis were Omnivorous. Their food consisted of fruits, grains, shoots as well as insects,
molluscs, worms etc. The species such as Common Teal, Spot Bill, etc. were Herbivorous. Their Food
consisted of fruits, grains, shoots of gram etc. The species such as Little Cormorant, Pied King Fisher, Small