Studies on the fresh-water Oligochaeta of South India

Hydrobiologia ◽  
1965 ◽  
Vol 26 (3-4) ◽  
pp. 463-483 ◽  
Author(s):  
K. Vanamala Naidu
Keyword(s):  
Fresh Water ◽  
South India

scholarly journals Utilizing GRACE and GLDAS data for estimating groundwater storage variability over the Krishna Basin

2018 ◽  
Vol IV-5 ◽  
pp. 129-136 ◽  
Author(s):  
A. S. Nair ◽  
J. Indu
Keyword(s):  
Fresh Water ◽  
South India ◽  
Water Security ◽  
Primary Reason ◽  
Wet Season ◽  
Groundwater Storage ◽  
Groundwater Balance ◽  
Human Needs ◽  
Irrigation Projects ◽  
Krishna Basin

<p><strong>Abstract.</strong> Groundwater is utilized intensively as a source of fresh water for irrigation and human needs. Hence, it is necessary to monitor groundwater storage for water security of the region in the future. The present study aims to evaluate the groundwater resource over the Krishna basin in South India. The basin comprises of 210 major and medium irrigation projects, which makes it important to evaluate the groundwater balance for a sustainable groundwater draft. This study evaluates the trend in groundwater anomaly derived from GRACE mascon product. Results indicate that the Krishna basin is subjected to a strong decline in groundwater at a rate of 0.34<span class="thinspace"></span>cm per year. Further, the study explores the seasonality of precipitation and its effect on groundwater by adopting an entropy-based approach. Results indicate the combined effect of delay in precipitation to attain peak and reduced duration of the wet season as a primary reason for the decline in the groundwater storage. The result shows that the reduction in groundwater storage affects the evapotranspiration over the region.</p>

scholarly journals Bopyrid isopods parasitizing on the cultured fresh water prawn, Macrobrachium malcolmsonii in South India

2016 ◽  
Vol 41 (1) ◽  
pp. 93-96 ◽  
Author(s):  
A. Gopalakrishnan ◽  
K. Raja ◽  
J. P. Trilles ◽  
M. Rajkumar ◽  
M. M. Rahman ◽  
...  
Keyword(s):  
Fresh Water ◽  
South India ◽  
Macrobrachium Malcolmsonii

Antimicrobial activity of certain fresh water microalgae from Thamirabarani River, Tamil Nadu, South India

2011 ◽  
Vol 1 (2) ◽  
pp. S170-S173 ◽  
Author(s):  
Justella Wilfred Prakash ◽  
Johnson Marimuthu @ Antonisamy ◽  
Solomon Jeeva
Keyword(s):  
Antimicrobial Activity ◽  
Fresh Water ◽  
Tamil Nadu ◽  
South India

scholarly journals Distribution and Diversity of Oligochaetes in Selected Ponds of Thiruvananthapuram District, Kerala, South India

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
M. S. Ragi ◽  
D. S. Jaya
Keyword(s):  
Fresh Water ◽  
South India ◽  
Tubifex Tubifex ◽  
Sediment Samples ◽  
Limnodrilus Hoffmeisteri ◽  
Pollution Indicator ◽  
Dero Digitata

The present study was carried out to evaluate the distribution and diversity of oligochaete fauna in selected ponds of Thiruvananthapuram district in Kerala, South India. The sediment samples were collected from three ponds seasonally during the period December 2006 to November 2008. In the study, 10 oligochaete species which belong to 8 genera were identified in three selected ponds. These include Dero digitata, Dero nivea, Dero obtusa, Pristina longiseta, Aulophorus furcatus, Stylaria fossularis, Chaetogaster spp., Aeolosoma spp., Tubifex tubifex and Limnodrilus hoffmeisteri. Tubifex tubifex and Limnodrilus hoffmeisteri are the pollution-indicator oligochaete species identified in the fresh water ponds, which reveals that the studied ponds are subjected to pollution.

Comprehensive hydro-geophysical prospecting to delineate fresh water zone in the coastal aquifer, South India

2020 ◽  
Vol 590 ◽  
pp. 125415
Author(s):  
G. Gnanachandrasamy ◽  
C. Dushiyanthan ◽  
T. Jeyavel Rajakumar ◽  
Jianyao Chen
Keyword(s):  
Fresh Water ◽  
Coastal Aquifer ◽  
South India ◽  
Geophysical Prospecting ◽  
Water Zone
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