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Authors Natale, E; Zalba, SM; Oggero, A; Reinoso, H
Author Full Name Natale, E.; Zalba, S. M.; Oggero, A.; Reinoso, H.
Title Establishment of Tamarix ramosissima under different conditions of salinity and water availability: Implications for its management as an invasive species
Source JOURNAL OF ARID ENVIRONMENTS
Language English
Document Type Article
Author Keywords Biological invasions; Habitat selection; Osmotic stress; Salinity; Saltcedar
Keywords Plus RIPARIAN PLANTS; SALT TOLERANCE; BIOLOGICAL INVASIONS; COLORADO RIVER; DROUGHT; TEMPERATURE; ARGENTINA; SEEDLINGS; GROWTH
Abstract The spontaneous spread of Tamarix represents a threat for biodiversity conservation. Tamarix ramosissima has been identified as an invader of arid and semi-arid environments in Argentina. The effects of salinity and water availability on vegetative reproduction and germination were evaluated in this study in order to determine ecological conditions that are appropriate for the species, and to identify areas of potential invasion in Argentina. Seeds and cuttings were grown in different concentrations of NaCl and PEG-6000 and under of soil saturation conditions. Percentages of seed germination and establishment and survival of cuttings were measured. The tolerance limits for germination reached values of -0.4 MPa (PEG-6000) and -0.8 MPa (NaCl). Cutting survival was significantly reduced at concentrations above 8.8 g/lt NaCl (-0.6 MPa) and under saturated soil conditions. Any cuttings survived under drought conditions. We concluded that soils with an EC less than 15 dS/m were adequate for germination, whereas cuttings tolerated values below 6 dS/m. Consequently, temperate, semi-arid and arid zones of Argentina are under risk of invasion by T. ramosissima even though the species is not resistant to local conditions of extreme drought or prolonged flooding. (C) 2010 Elsevier Ltd. All rights reserved.
Author Address [Natale, E.; Reinoso, H.] Univ Nacl Rio Cuarto, Lab Morfol Vegetal, Dept Ciencias Nat, RA-5800 Rio Cuarto, Cordoba, Argentina; [Natale, E.] Fdn Conservac & Desarrollo, RA-5800 Rio Cuarto, Cordoba, Argentina; [Zalba, S. M.] Univ Nacl Sur, GEKKO, Grp Estudios Conservac & Manejo, Buenos Aires, DF, Argentina; [Oggero, A.] Univ Nacl Rio Cuarto, Lab Plantas Vasc, Dept Ciencias Nat, RA-5800 Rio Cuarto, Cordoba, Argentina
Reprint Address Natale, E (reprint author), Univ Nacl Rio Cuarto, Lab Morfol Vegetal, Dept Ciencias Nat, Ruta 36 Km 601, RA-5800 Rio Cuarto, Cordoba, Argentina.
E-mail Address enatale@exa.unrc.edu.ar; szalba@criba.uns.edu.ar; aoggero@exa.unrc.edu.ar; hreinoso@exa.unrc.edu.ar
Funding Agency and Grant Number CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina)Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Secyt-UNRCSecretaria de Ciencia y Tecnologia (SECYT)
Funding Text Evangelina Natale and Sergio Zalba received financial support from CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas, Argentina). This work was funded by Secyt-UNRC (H. Reinoso). The experiments described in this article meet the current laws of Argentina. Authors wish to thank the editor and two anonymous reviewers for providing constructive comments and John Gaskin, Veronica Andreo and Daniela Marini for reviewing the language of the manuscript.
Times Cited 20
Total Times Cited Count (WoS, BCI, and CSCD) 24
Publisher ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Publisher City LONDON
Publisher Address 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
ISSN 0140-1963
29-Character Source Abbreviation J ARID ENVIRON
ISO Source Abbreviation J. Arid. Environ.
Publication Date NOV
Year Published 2010
Volume 74
Issue 11
Beginning Page 1399
Ending Page 1407
Digital Object Identifier (DOI) 10.1016/j.jaridenv.2010.05.023
Page Count 9
Web of Science Category Ecology; Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number 659DQ
Unique Article Identifier WOS:000282547600005
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