Conyza canadensis suppresses plant diversity in its nonnative ranges but not at home: A transcontinental comparison
Shah, Manzoor A. Callaway, Ragan M. Shah, Tabasum Houseman, Gregory R. Pal, Robert W. Xiao, Sa Luo, Wenbo Rosche, Christoph Reshi, Zafar A. Khasa, Damase P.
Shah, Manzoor A.
Callaway, Ragan M.
Shah, Tabasum
Houseman, Gregory R.
Pal, Robert W.
Xiao, Sa
Luo, Wenbo
Rosche, Christoph
Reshi, Zafar A.
Khasa, Damase P.
Other Names
Location
Time Period
Advisors
Original Date
Digitization Date
Issue Date
2014-02-18
Type
Article
Genre
Keywords
Biogeography,Competition,Conyza canadensis,Cross-continental experiment,Impact,Invasion ecology,Plant community,Species diversity
Subjects (LCSH)
Citation
Shah, M.A., Callaway, R.M., Shah, T., Houseman, G.R., Pal, R.W., Xiao, S., Luo, W., Rosche, C., Reshi, Z.A., Khasa, D.P. and Chen, S. (2014), Conyza canadensis suppresses plant diversity in its nonnative ranges but not at home: a transcontinental comparison. New Phytol, 202: 1286-1296. https://doi.org/10.1111/nph.12733
Abstract
Summary
• "The impact of invasive species across their native and nonnative ranges is poorly quantified and this impedes a complete understanding of biological invasions.
• We compared the impact of the native North American plant, Conyza canadensis, which is invasive to Eurasia, on species richness at home and in a number of introduced regions through well replicated transcontinental field studies, glasshouse experiments and individual-based models.
• Our results demonstrated mostly negative relationships between C. canadensis abundance and native species richness in nonnative ranges, but either positive or no relationships in its native North American range. In glasshouse experiments, the total biomass of Conyza was suppressed more by species from its native range than by species from regions where it is nonnative, but the effects of Conyza on other species did not show a consistent biogeographical pattern. Finally, individual-based models led to the exclusion of Conyza from North American scenarios but to high abundances in scenarios with species from the nonnative ranges of Conyza.
• We illustrate biogeographical differences in the impact of an invader across regional scales and suggest that inherent differences in one specific aspect of competitive ability, tolerance to the effects of other species, may play some role in these differences."
Table of Contents
Description
Article first published online: 2014-02-18. Issue published: 2014-06.
Publisher
Wiley-Blackwell
Published on behalf of the New Phytologist Foundation
Published on behalf of the New Phytologist Foundation
Journal
New Phytologist
Book Title
Series
Digital Collection
Finding Aid URL
Use and Reproduction
Archival Collection
PubMed ID
ISSN
0028-646X
1469-8137
1469-8137