JEB logo

Journal of Environmental Biology

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

About Journal
    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
    JEB Awards

Google Search the Journal web-site:

    Abstract - Issue Mar 2015, 36 (2)                                     Back

nstantaneous and historical temperature effects on a-pinene

Long-term survival of methanogens of an anaerobic digestion sludge under starvation and temperature variation


Tae Gwan Kim, Taewoo Yi, Jung-Hee Lee and Kyung-Suk Cho*

Global Top 5 Research Programme, Department of Environmental Science and Engineering, Ewha Womans University,

11-1 Daehyun-dong, Seodaemun-gu, Seoul 120-750, Korea

*Corresponding Authors Email :



Publication Data

Paper received:

13 September 2013


Revised received:

02 May 2014



20 June 2014



To investigate starvation effect on methanogen community, two identical membrane reactors were continuously operated for 84 consecutive days, with a temperature change from 50?C to 20?C. Continuous feeding washed out 97% biomass from reactors during the experimental period. Quantitative PCR, using mcrA genes, indicated that the methanogen abundance decreased from 7.0?107 to 1.2?107 mcrA copies?ml-1 (volume basis) at 50 ?C, and then increased to 4.4 ?107 mcrA copies?ml-1 at 20 ?C (p<0.05). Correspondence analysis indicated that methanogen communities were distinctly grouped by each temperature. Canonical correspondence analysis indicated that temperature showed a significant correlation with the methanogen community composition. These results suggest that methanogens can survive for a long time (at least more than 84 days) under starvation conditions, and that temperature could be a primary factor determining the density and community of methanogens. ?? 


 Key words


Methanogens, Population dynamics, Starvation, Temperature 



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).