Record Details

Assessment of water quality of the tropical stream Somavahini in the Bhadra Wildlife Sanctuary, Western Ghats, India

Indian Agricultural Research Journals

View Archive Info
 
 
Field Value
 
Title Assessment of water quality of the tropical stream Somavahini in the Bhadra Wildlife Sanctuary, Western Ghats, India
 
Creator Thippeswamy, Seetharamaiah
Kumar, Vinod
K. N. Dharmakumar
Suresh, Gillikenally C
Baikampadi, Shubharekha
 
Description A total of 21 water quality variables of the stream Somavahini, a tributary of river Bhadra, in the Jagara Valley of Bhadra Wildlife Sanctuary in the Western Ghats region of Karnataka, India were monitored and assessed for a period of one year. Cluster analysis (CA) for variables and stations produced dendrograms revealing similar natural background, sources and pollutionareas in the main stream and also in tributaries (Tadve, Hipla). Cluster analysis revealed that the number of sampling months could be reduced. Temporal CA produced four distinct seasons. Principal component analysis (PCA) revealed six components that explained 75.03% of total variance, and reduced the dimensionality of data from 21 to 6 components and produced 71.43% of data reduction with only 15.76% of loss of information. Factor analysis (FA) further reduced the contribution of less significant variables obtained from PCA and Variance Factor 1 (VF 1) accounted for 14.38% of total variance. Application of PCA and FA in water quality analysis revealed that station 1 at Muthodi contributed the highest pollution followed by station 4 at Hebbe in the downstream of the main stream Somavahini. Further, it was revealed that the water from Hipla tributary was safe/normal whereas Tadvetributary water was slightly polluted. The variables such as turbidity, nitrate and iron have caused no pollution at upstream station near Muthodi and subsequently caused slight pollution in Tadve tributary and also at downstream station near Hebbe in the main stream Somavahini due to further accumulation. The water quality variables comprising water temperature, dissolved oxygen and biological oxygen demand have indicated high level of pollution in the upstream station due to anthropogenic activities and subsequently these variables indicated no pollution in tributaries and also at downstream station at Hebbe due to dilution and self-purification processes operating in the stream basin.
Keywords: Bhadra Tiger Sanctuary, Bababudan schist belt, Cluster analysis, Factor analysis, Karnataka, Principal component analysis
 
Publisher Central Marine Fisheries Research Institute (on behalf of Indian Council of Agricultural
 
Date 2024-06-30
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJF/article/view/121819
10.21077/ijf.2024.71.2.121819-06
 
Source Indian Journal of Fisheries; Vol. 71 No. 2 (2024)
0970-6011
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJF/article/view/121819/54943
 
Rights Copyright (c) 2024 Indian Journal of Fisheries