Beyond EICA : understanding post-establishment evolution requires a broader evaluation of potential selection pressures

Research on post-establishment evolution in nonnative plant populations has focused almost exclusively on testing the Evolution of Increased Competitive Ability (EICA) hypothesis, which posits that the lack of specialize
Research on post-establishment evolution in nonnative plant populations has focused almost exclusively on testing the Evolution of Increased Competitive Ability (EICA) hypothesis, which posits that the lack of specialized herbivores in the invaded range drives evolution in nonnative plant populations. Fifteen years of conflicting EICA test results suggest that selection pressures other than specialized herbivory are important in driving post-establishment evolution in invasive species. Alternative hypotheses, such as the Evolution of Reduced Competitive Ability (ERCA) hypothesis, have been proposed but have received little attention or testing. We argue that the lack of consensus across studies that test EICA may be due in part to the lack of consistent definitions and varying experimental design parameters, and that future research in this field would benefit from new methodological considerations. We examined previous work evaluating post-establishment evolution and evaluated the range of study systems and design parameters used in testing the EICA hypothesis. Our goal was to identify where different uses of ecological terms and different study parameters have hindered consensus and to suggest a path forward to move beyond EICA in post-establishment evolution studies. We incorporated these methods into a design framework that will increase data harmony across future studies and will facilitate examinations of any potential selection pressure driving evolution in the invaded range. 
show moreshow less

Export metadata

  • Export Bibtex
  • Export RIS

Additional Services

    Share in Twitter Search Google Scholar
Metadaten
Author:Joshua P. Atwood, Laura A. Meyerson
URN:urn:nbn:de:hebis:30:3-321205
DOI:http://dx.doi.org/10.3897/neobiota.10.954
ISSN:1314-2488
Parent Title (English):NeoBiota
Document Type:Article
Language:English
Date of Publication (online):2013/10/28
Date of first Publication:2011/10/05
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2013/10/28
Tag:EICA; ERCA; invasion ecology; invasive plants; natural selection
Issue:10
Pagenumber:19
First Page:7
Last Page:25
HeBIS PPN:363045260
Dewey Decimal Classification:580 Pflanzen (Botanik)
Sammlungen:Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:NeoBiota 10
Journal: Dazugehörige Zeitschrift anzeigen
Licence (German):License LogoCreative Commons - Namensnennung 3.0

$Rev: 11761 $