LIMNOLOGICAL STUDIES OF CERTAIN SELECTED CHEMICAL PARAMETERS AND ZOOPLANKTONS OF PEDDACHERUVU LAKE

Abstracts

Experiments were designed to investigate the certain chemical factors and biological examination of water with reference to zooplanktons to establish a relationship between the physico-chemical parameters and population density of water of Peddacheruvu Lake, L.B. Nagar, Hyderabad (T.S). These are the findings of the 192 samples of water which were analyzed during the two years study from four representative sampling (S1, S2, S3 and S4) sites of the water body. The maximum amount of calcium recorded was 58 ppm in the month of May 2012 at S4 station and the minimum quantity of calcium recorded was 39 ppm in the month of August 2011 at S1 station. The maximum value of magnesium recorded was 28 ppm in the month of November 2011 at S1 and the minimum value of 20 ppm was recorded in the month of May 2011 at S3.The chemical factors which have been taken for discussion in the present study are calcium and magnesium to understand the hardness of water and its possible relationship with zooplanktons. The range of Tetrahymena pyriformis observed was from 23,000 at S3 in September 2012 to 40,000 at S1 in May 2011. The range of Keratella quadrata observed was from 14,000 at S4 in September 2012 to 25,000 at S1 in April 2011.The preliminary studies of the water body has confirmed a clear relationship between hardness and population density of Keratella. The highest number of Keratella is directly proportional to quantities of calcium and magnesium.

Keywords :Peddachervu Lake; biological examination; calcium; magnesium; TetrahymenaKeratella.

Please see full information

BUTTERFLY (LEPIDOPTERA: RHOPALOCERA) DIVERSITY OF FOREST CAMPUS, COIMBATORE, TAMILNADU

Abstracts

The Forest Campus is situated in the urban environs of Coimbatore. It has an extent of 165 acres. Studies on butterfly diversity in the Forest campus was carried out from January 2013 to January 2014 by line transect method. Altogether 59 species of butterflies coming under 42 genera and five families were recorded during the study. Occurrence of certain butterflies viz. Crimson Rose (Pachliopta hector Linnaeus), Common Pierrot (Castalius rosimon Fabricius) and Danaid eggfly (Hypolimnas misippusLinnaeus) listed in the Schedule-I and Common Gull (Cepora nerissa Fabricius) included in the Schedule-II of the Indian Wildlife (Protection) Act 1972, in the campus is interesting. The study highlights the potential of such vegetated areas in the urban surroundings to serve as ‘refugia’ for the fast dwindling butterfly fauna.

Keywords : Forest Campus; butterfly diversity; urban environs; conservation.

Please see full article

Create your website with WordPress.com
Get started