English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/125752
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Changes in rainfall amount and frequency do not affect the outcome of the interaction between the shrub Retama sphaerocarpa and its neighbouring grasses in two semiarid communities

AuthorsSoliveres, S.; García-Palacios, P.; Maestre, F. T.; Escudero, Adrián; Valladares Ros, Fernando
KeywordsStipa tenacissima L.
Shrub encroachment
Roadside slope
Pulse-driven ecosystems
Competition
Issue Date29-Jan-2013
PublisherAcademic Press
Elsevier
CitationJournal of Arid Environments 91: 104-112 (2013)
AbstractWe evaluated the net outcome of the interaction between the shrub Retama sphaerocarpa, our target plant, and different herbaceous neighbours in response to changes in the magnitude and frequency of rainfall events during three years. The experiment was conducted in natural and anthropogenic grasslands dominated by a perennial stress-tolerator and ruderal annual species, respectively. In spite of the neutral or positive effects of neighbours on water availability, neighbouring plants reduced the performance of Retama juveniles, suggesting competition for resources other than water. The negative effects of grasses on the photochemical efficiency of Retama juveniles decreased with higher water availabilities or heavier irrigation pulses, depending on the grassland studied; however, these effects did not extent to the survival and growth of Retama juveniles. Our findings show the prevalence of competitive interactions among the studied plants, regardless of the water availability and its temporal pattern. These results suggest that positive interactions may not prevail under harsher conditions when shade-intolerant species are involved. This study could be used to further refine our predictions of how plant-plant interactions will respond to changes in rainfall, either natural or increased by the ongoing climatic change, in ecosystems where grass-shrubs interactions are prevalent. © 2013 Elsevier Ltd.
URIhttp://hdl.handle.net/10261/125752
DOI10.1016/j.jaridenv.2012.12.011
Identifiersdoi: 10.1016/j.jaridenv.2012.12.011
issn: 0140-1963
e-issn: 1095-922X
Appears in Collections:(MNCN) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.