JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Home
    Editor in Chief
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
 
Read Journal
    Current Issue
    Journal Archives
 
For Authors
    Guidelines for Authors
    Terms and Conditions
    Fees and Payments
    Track Paper Status
 
Announcements
    JEB Awards
 

Google Search the Journal web-site:


    Abstract - Issue Sep 2015, 36 (5)                                     Back


nstantaneous and historical temperature effects on a-pinene

Physico-chemical qualities of water in high altitude rice fish farming system of Ziro valley, Arunachal Pradesh, India

 

Rajashree Saikia1, Tapati Das1 and? Debangshu Narayan Das2*

1Department of Ecology and Environmental Science, Assam University, Silchar - 788 011, India,

2Department of Zoology, Rajiv Gandhi University, Rono Hills, Doimukh - 791 112, India

*Corresponding Author?s E-mail : dndas2011@gmail.com

 

 

 

Publication Data

Paper received:

17 June 2014

 

Revised received:

12 March 2015

 

Accepted:

20 March 2015

 

Abstract

Water in rice fields of mountain valley of Ziro, Arunachal Pradesh was investigated for physico-chemical characterization during rice fish farming season (Kharif) of 2013. Water temperature, dissolved oxygen, biological oxygen demand, free carbon dioxide, nitrate-nitrogen, phosphate-phosphorus, chloride, total hardness, calcium hardness, alkalinity, pH, total dissolved solids, specific conductivity and water depth were studied. This study revealed that the physical parameters of water in rice fields like water temperature, pH, total dissolved solids, specific conductivity and water depth were 23.5?31.3?C, 5.9?6.9, 250.34-370.5 mgl-1, 437.75-660.33 ?Scm-1 and 3.72-16.9 cm respectively. The chemical features like dissolved oxygen, biological oxygen demand, free CO2, nitrate?nitrogen, phosphate?phosphorus, chloride, total hardness ,Ca hardness, alkalinity were 2.4-12.9 mgl-1, 1.5-11.1mgl-1, 9.7-23.35 mgl-1, 1.28-3.9 mgl-1, 0.005-0.539 mgl-1, 16.6-46.8 mgl-1, 13.9-34.5 mgl-1, 9.6-13.53mgl-1 and 23.16-43.34 mgl-1 respectively. On the other hand, investigation on planktonic life forms indicated the presence of 13.5?103-84.9?103 indl-1 and 1.23?103-4.86?103 indl-1 phytoplankton and zooplankton respectively during the Kharif season. The above physio-chemical parameters were found to be conducive for raising fish as companion crop of rice due to occurrence of diversified planktonic life forms in underneath water. ?   

 

 

 Key words

Fishery, Plankton, Rice field, Water quality, Ziro valley

 

 

Copyright ? 2015 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).