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 May 2008, 29 (3)                                     Back

Microbial biomass at land water interface and its role in regulating ecosystem

properties of a fresh water dry tropical woodland lake

J. Pandey*

Department of Environmental Sciences, M.L.Sukhadia University, Udaipur - 313 001, India

(Received: January 09, 2006; Revised received: November 12, 2006; Accepted: December 31, 2006)

Abstract: This study was aimed at determining microbial biomass at land water interface and the role it plays in regulating ecosystem properties of a fresh water dry tropical woodland lake. Four microbial variables namely biomass-C (Cmic), fumigated CO2 C, substrate induced respiration (SIR) and basal respiration (BR) were measured in humus samples collected from land water interface over a period of one year. Microbial biomass (Cmic) was maximum during February (718 g CO2 C g-1).Similar was the case of fumigated CO2 C (560 g CO2 C g-110 d-1), SIR ( 2900 g CO2-C g-1) and BR (480 g CO2 C g-1). Humus- N appeared maximum (1.60 %) during November and phenolics (204 g g-1) during December. Gross primary productivity (GPP) was found maximum (3.30 g C m -2 d-1) during March. Almost similar trend appeared for chlorophyll and phytoplankton density. Variation in microbial biomass at land water interface can be explained by seasonality and the quality of substrate material. Asynchrony in the peaks of microbial variables with phytoplankton pulsation and GPP suggested that the microbial biomass through nutrient mineralization regulates ecosystem functioning of a fresh water woodland lake. This has relevance for evaluating the nature of anthropogenic perturbations and for maintenance of fresh water lakes void of human disturbances.

Key words: Land water interface, Ecosystem, Phytoplankton, Humus, Microbial biomass

PDF of full length paper is available with author (


Copyright 2008 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).