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
authors Xiao, S; Callaway, RM; Graebner, R; Hierro, JL; Montesinos, D
author full name Xiao, Sa; Callaway, Ragan M.; Graebner, Ryan; Hierro, Jose L.; Montesinos, Daniel
nationality internacional
source ECOLOGICAL MODELLING
language English
document type Article
author keywords Biogeography; Competition; Disturbance; Individual-based model; Modeling; Centaurea solstitialis
keywords plus STARTHISTLE CENTAUREA-SOLSTITIALIS; NEGATIVE SPECIES INTERACTIONS; BIOLOGICAL-CONTROL; SEED LIMITATION; INTERPLAY; EVOLUTION; GROWTH; SIZE; RECRUITMENT; RESISTANCE
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 nonnative 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. (C) 2016 Elsevier B.V. All rights reserved.
author address [Xiao, Sa] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Peoples R China; [Montesinos, Daniel] Univ Coimbra, Dept Life Sci, Ctr Funct Ecol, P-3000456 Coimbra, Portugal; [Callaway, Ragan M.; Graebner, Ryan; Montesinos, Daniel] Univ Montana, Div Biol Sci, Missoula, MT 59812 USA; [Callaway, Ragan M.; Graebner, Ryan; Montesinos, Daniel] Univ Montana, Inst Ecosyst, Missoula, MT 59812 USA; [Hierro, Jose L.] CONICET Univ Nacl La Pampa UNLPam, RA-6300 Santa Rosa, Argentina; [Montesinos, Daniel] CIDE CSIC UV GV, Carretera Montcada Naquera,Km 4-5, Valencia 46113, Spain
reprint address Montesinos, D (reprint author), Univ Coimbra, Dept Life Sci, Ctr Funct Ecol, P-3000456 Coimbra, Portugal.
e-mail address xiaos@lzu.edu.cn; ray.callaway@mso.umt.edu; jhierro@conicet.gov.ar; danimontesinos@gmail.com
researcherid number Montesinos, Daniel/A-9070-2012
orcid number Montesinos, Daniel/0000-0003-2893-0878
funding agency and grant number Spanish Micinn [2008-0662]; Portuguese FCT [PCT/BIA-PLA/3389/2012, IF-00066-2013]; European Commission [FP7-PEOPLE-MC-CIG-321909]; EU via QREN; EU via COMPETE; EU via FEDER; State Key Program of the National Natural Science of China [31230014, 41430749]; Program for New Century Excellent Talents in University [NCET-13-0265]; Central University Special Fund [lzujbky-2014-k09, lzujbky-2014-200]; National Key Technology RD Program [2014BAC05B02]; NSF EPSCoR Track-1 [EPS-1101342]
funding text RMC thanks the NSF EPSCoR Track-1 EPS-1101342 (INSTEP 3) for support. DM was funded by the Spanish Micinn (2008-0662), by the Portuguese FCT (PCT/BIA-PLA/3389/2012 and IF-00066-2013), and by the European Commission (FP7-PEOPLE-MC-CIG-321909); FCT is partially funded by the EU via QREN, COMPETE and FEDER. SX thanks the State Key Program of the National Natural Science of China (31230014, 41430749), the Program for New Century Excellent Talents in University (NCET-13-0265), the Central University Special Fund (lzujbky-2014-k09, lzujbky-2014-200), the National Key Technology R&D Program (No. 2014BAC05B02), and the National Natural Science Foundation of China (31470492).
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cited reference count 56
publisher ELSEVIER SCIENCE BV
publisher city AMSTERDAM
publisher address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
issn 0304-3800
29-character source abbreviation ECOL MODEL
iso source abbreviation Ecol. Model.
publication date SEP 10
year published 2016
volume 335
beginning page 39
ending page 47
digital object identifier (doi) 10.1016/j.ecolmodel.2016.05.005
page count 9
web of science category Ecology
subject category Environmental Sciences & Ecology
document delivery number DQ3MF
unique article identifier WOS:000379105700005
file xiaoetal2016disturbancetipsbalanceecolmodwsupp.pdf
CFE authors
Daniel Montesinos