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dc.contributor.author
Xiao, Sa
dc.contributor.author
Callaway, Ragan M.
dc.contributor.author
Graebner, Ryan
dc.contributor.author
Hierro, Jose Luis
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dc.contributor.author
Montesinos, Daniel
dc.date.available
2017-06-30T13:38:18Z
dc.date.issued
2016-09
dc.identifier.citation
Xiao, Sa; Callaway, Ragan M.; Graebner, Ryan; Hierro, Jose Luis; Montesinos, Daniel; Modeling the relative importance of ecological factors in exotic invasion: the origin of competitors matters, but disturbance in the non-native range tips the balance; Elsevier Science; Ecological Modelling; 335; 9-2016; 39-47
dc.identifier.issn
0304-3800
dc.identifier.uri
http://hdl.handle.net/11336/19241
dc.description.abstract
Successful exotic plant invasions are likely to be caused by multiple, non-mutually exclusive mechanisms, and it is exceptionally difficult to weight the relative importance of these mechanisms identified in different experiments. To this end we used individual-based models to explore how integrating empirical results from experiments might help to elucidate the relative importance of seed origin, biogeographic differences in competitive outcomes, and disturbance in exotic plant invasion. We integrated results from (1) competition experiments between Centaurea solstitialis derived from populations in the non-native range (California), the native range (Spain), and co-occurring native species from both ranges, (2) seed production by Centaurea plants from the different ranges grown in a common-garden environment, and (3) responses to disturbance experiments with plants from different native and non-native ranges. Californian C. solstitialis reached slightly higher abundances than its Spanish counterparts in every scenario, mainly due to higher seed production of Californians than their Spanish conspecifics, indicating the potential importance of evolutionary changes in the non-native range. In the absence of disturbance, grass species native to Europe showed stronger competitive effects on C. solstitialis than grass species native to North America, suggesting that release from competition in the native range may have some explanatory power for successful C. solstitialis invasion. However, the intensity of competition depended on the disturbance regime used in models. When intense disturbance was incorporated into the model, C. solstitialis was favored, with plants from Californian seed sources reaching higher densities than plants from Spanish seed sources. Our results are consistent with the idea that disproportional positive responses to disturbance in California, relative to those in the invader's native range of Spain, may be an important factor in the dominance of C. solstitialis in its non-native ranges. It is not clear why disturbance would have more beneficial effects on the invader in its non-native range, but the powerful effects of disturbance appear to interact in subtle ways with biogeographic differences in evolutionary trends, competitive intensities, life histories, and reproductive rates.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Biogeography
dc.subject
Competition
dc.subject
Disturbance
dc.subject
Modeling
dc.subject
Individual Based Model
dc.subject
Centaurea Solstitialis
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Modeling the relative importance of ecological factors in exotic invasion: the origin of competitors matters, but disturbance in the non-native range tips the balance
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-29T13:59:25Z
dc.journal.volume
335
dc.journal.pagination
39-47
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Ámsterdam
dc.description.fil
Fil: Xiao, Sa. Lanzhou University. School of Life Science. State Key Laboratory of Grassland and Agro-Ecosystems; China
dc.description.fil
Fil: Callaway, Ragan M.. University of Montana; Estados Unidos
dc.description.fil
Fil: Graebner, Ryan. University of Montana; Estados Unidos
dc.description.fil
Fil: Hierro, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Pampa; Argentina
dc.description.fil
Fil: Montesinos, Daniel. Consejo Superior de Investigaciones Cientificas; España. Centro de Investigaciones sobre Desertificación; España
dc.journal.title
Ecological Modelling
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304380016301752
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ecolmodel.2016.05.005
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