Loading content, please wait..
loading..
Logo
Version 3.21
or
Authors Saul-Tcherkas, V; Steinberger, Y
Author Full Name Saul-Tcherkas, Vered; Steinberger, Yosef
Title Substrate utilization patterns of desert soil microbial communities in response to xeric and mesic conditions
Source SOIL BIOLOGY & BIOCHEMISTRY
Language English
Document Type Article; Proceedings Paper
Conference Title 2nd International Conference on Rhizosphere
Conference Date AUG, 2007
Conference Location Montpellier, FRANCE
Author Keywords Desert shrubs; Microbial community; Functional diversity
Keywords Plus FUNCTIONAL DIVERSITY; NEGEV DESERT; VERTICAL-DISTRIBUTION; PRECIPITATION PULSES; BIOMASS RESPONSE; ARID ECOSYSTEMS; GRASSLAND SOILS; ALASKAN TAIGA; PLANT; NITROGEN
Abstract The Negev Desert is characterized by low soil moisture and organic matter content and an unpredictable rainfall amount, dispersion, and intensity. Water and nutrient availability are, therefore, the major limiting factors of biological activity in arid and semi-arid ecosystems. Plants have developed different ecophysiological adaptations in order to cope with the harsh conditions in this xeric environment, e.g., excretion of salt (Reaumuria negevensis) and chemical compounds (Artemisia sieberi) through the leaves. Microorganisms constitute a major part of these ecosystems' total biomass, and are diverse members of the soil food web, being primarily responsible for breaking down complex organic compounds, which are then recycled. They are also known to be very sensitive to abiotic changes and can time their activity to the environmental conditions. Soil samples were collected monthly from a 0 to 10 cm depth, under the canopies of A. sieberi, Noaea mucronata, and R. negevensis. Samples collected from inter-shrub spaces served as control. CO2 evolution, microbial biomass, microbial functional diversity, and the physiological profile of the community, were determined by MicroResp (TM) analysis. A significant difference was found between the two dry periods in most of the examined parameters. The values of water, organic matter content, and total soluble nitrogen were higher in soil samples collected in the vicinity of R. negevensis than in samples collected in the vicinity of N. mucronata, A. sieberi, and the open area. A similar trend was found in CO2 evolution, microbial biomass, and H' values, in which soil samples collected beneath the canopies of N. mucronata and R. negevensis and from open area had higher values during the wet periods (which were characterized by a mesic environment) and in samples collected beneath the A. sieberi in the wet 2006 and dry 2007 periods. (C) 2009 Elsevier Ltd. All rights reserved.
Author Address [Saul-Tcherkas, Vered; Steinberger, Yosef] Bar Ilan Univ, Mina & Everard Goodman Fac Life Sci, IL-52900 Ramat Gan, Israel
Reprint Address Steinberger, Y (corresponding author), Bar Ilan Univ, Mina & Everard Goodman Fac Life Sci, IL-52900 Ramat Gan, Israel.
E-mail Address steinby@mail.biu.ac.il
Times Cited 16
Total Times Cited Count (WoS, BCI, and CSCD) 20
Publisher PERGAMON-ELSEVIER SCIENCE LTD
Publisher City OXFORD
Publisher Address THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
ISSN 0038-0717
29-Character Source Abbreviation SOIL BIOL BIOCHEM
ISO Source Abbreviation Soil Biol. Biochem.
Publication Date SEP
Year Published 2009
Volume 41
Issue 9
Beginning Page 1882
Ending Page 1893
Digital Object Identifier (DOI) 10.1016/j.soilbio.2009.06.011
Page Count 12
Web of Science Category Soil Science
Subject Category Agriculture
Document Delivery Number 496RW
Unique Article Identifier WOS:000269995100017
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed