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dc.contributor.author
Andonian, Krikor
dc.contributor.author
Hierro, Jose Luis

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Khetsuriani, Liana
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Becerra, Pablo
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Janoyan, Grigor
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Villarreal, Diego

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Cavieres, Lohengrin
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Fox, Laurel R.
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Callaway, Ragan M.
dc.date.available
2019-08-14T22:33:47Z
dc.date.issued
2011-05
dc.identifier.citation
Andonian, Krikor; Hierro, Jose Luis; Khetsuriani, Liana; Becerra, Pablo; Janoyan, Grigor; et al.; Range-expanding populations of a globally introduced weed experience negative plant-soil feedbacks; Public Library of Science; Plos One; 6; 5; 5-2011; 1-8
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/81636
dc.description.abstract
Background: Biological invasions are fundamentally biogeographic processes that occur over large spatial scales. Interactions with soil microbes can have strong impacts on plant invasions, but how these interactions vary among areas where introduced species are highly invasive vs. naturalized is still unknown. In this study, we examined biogeographic variation in plant-soil microbe interactions of a globally invasive weed, Centaurea solstitialis (yellow starthistle). We addressed the following questions (1) Is Centaurea released from natural enemy pressure from soil microbes in introduced regions? and (2) Is variation in plant-soil feedbacks associated with variation in Centaurea's invasive success? Methodology/Principal Findings: We conducted greenhouse experiments using soils and seeds collected from native Eurasian populations and introduced populations spanning North and South America where Centaurea is highly invasive and noninvasive. Soil microbes had pervasive negative effects in all regions, although the magnitude of their effect varied among regions. These patterns were not unequivocally congruent with the enemy release hypothesis. Surprisingly, we also found that Centaurea generated strong negative feedbacks in regions where it is the most invasive, while it generated neutral plant-soil feedbacks where it is noninvasive. Conclusions/Significance: Recent studies have found reduced below-ground enemy attack and more positive plant-soil feedbacks in range-expanding plant populations, but we found increased negative effects of soil microbes in range-expanding Centaurea populations. While such negative feedbacks may limit the long-term persistence of invasive plants, such feedbacks may also contribute to the success of invasions, either by having disproportionately negative impacts on competing species, or by yielding relatively better growth in uncolonized areas that would encourage lateral spread. Enemy release from soil-borne pathogens is not sufficient to explain the success of this weed in such different regions. The biogeographic variation in soil-microbe effects indicates that different mechanisms may operate on this species in different regions, thus establishing geographic mosaics of species interactions that contribute to variation in invasion success.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Public Library of Science

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Centaurea Solstitialis
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Plant Invasions
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Soil-Plant Feedbacks
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Biogeography
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Ecología

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Ciencias Biológicas

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CIENCIAS NATURALES Y EXACTAS

dc.title
Range-expanding populations of a globally introduced weed experience negative plant-soil feedbacks
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-13T19:12:45Z
dc.journal.volume
6
dc.journal.number
5
dc.journal.pagination
1-8
dc.journal.pais
Estados Unidos

dc.journal.ciudad
San Francisco
dc.description.fil
Fil: Andonian, Krikor. University of California; Estados Unidos
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Fil: Hierro, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
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Fil: Khetsuriani, Liana. Georgian Academy of Sciences. Institute of Botany; Georgia
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Fil: Becerra, Pablo. Universidad Católica de Chile; Chile
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Fil: Janoyan, Grigor. American University of Armenia; Armenia
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Fil: Villarreal, Diego. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina
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Fil: Cavieres, Lohengrin. Universidad de Concepción; Chile
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Fil: Fox, Laurel R.. University of California; Estados Unidos
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Fil: Callaway, Ragan M.. University of Montana; Estados Unidos
dc.journal.title
Plos One

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1371/journal.pone.0020117
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info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0020117
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