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Auteur Laurent Jean Lamarque (1983-) |
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Titre : Ecology and evolution of invasive maple tree species Type de document : Électronique Auteurs : Laurent Jean Lamarque (1983-) Année de publication : 2013 Importance : 270 p. Langues : Anglais (eng) Catégories : [CBNPMP-Géographique] Canada
[CBNPMP-Géographique] France
[CBNPMP-Géographique] Ontario
[CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantesMots-clés : Acer negundo L. Acer platanoides L. Note de contenu : A Dissertation submitted to the Faculty of Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Graduate program in biology Lien pérenne : HAL : tel-02803826 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=82568 Lamarque, Laurent Jean (1983-) , 2013. Ecology and evolution of invasive maple tree species. , . 270 pp.Documents numériques
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Document (2013)URLInvasive Acer negundo outperforms native species in non-limiting resource environments due to its higher phenotypic plasticity / Annabel J. Porté in BMC Ecology, 11 (2011)
Titre : Invasive Acer negundo outperforms native species in non-limiting resource environments due to its higher phenotypic plasticity Type de document : Électronique Auteurs : Annabel J. Porté ; Laurent Jean Lamarque (1983-) ; Christopher Lortie ; Richard Michalet ; Sylvain Delzon (1977-) Année de publication : 2011 Article en page(s) : 28 p. Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Acer negundo L. Résumé : Background
To identify the determinants of invasiveness, comparisons of traits of invasive and native species are commonly performed. Invasiveness is generally linked to higher values of reproductive, physiological and growth-related traits of the invasives relative to the natives in the introduced range. Phenotypic plasticity of these traits has also been cited to increase the success of invasive species but has been little studied in invasive tree species. In a greenhouse experiment, we compared ecophysiological traits between an invasive species to Europe, Acer negundo, and early- and late-successional co-occurring native species, under different light, nutrient availability and disturbance regimes. We also compared species of the same species groups in situ, in riparian forests.
Results
Under non-limiting resources, A. negundo seedlings showed higher growth rates than the native species. However, A. negundo displayed equivalent or lower photosynthetic capacities and nitrogen content per unit leaf area compared to the native species; these findings were observed both on the seedlings in the greenhouse experiment and on adult trees in situ. These physiological traits were mostly conservative along the different light, nutrient and disturbance environments. Overall, under non-limiting light and nutrient conditions, specific leaf area and total leaf area of A. negundo were substantially larger. The invasive species presented a higher plasticity in allocation to foliage and therefore in growth with increasing nutrient and light availability relative to the native species.
Conclusions
The higher level of plasticity of the invasive species in foliage allocation in response to light and nutrient availability induced a better growth in non-limiting resource environments. These results give us more elements on the invasiveness of A. negundo and suggest that such behaviour could explain the ability of A. negundo to outperform native tree species, contributes to its spread in European resource-rich riparian forests and impedes its establishment under closed-canopy hardwood forests.Lien pérenne : DOI : 10.1186/1472-6785-11-28 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142542
in BMC Ecology > 11 (2011) . - 28 p.Porté, Annabel J., Lamarque, Laurent Jean (1983-), Lortie, Christopher, Michalet, Richard, Delzon, Sylvain (1977-) 2011 Invasive Acer negundo outperforms native species in non-limiting resource environments due to its higher phenotypic plasticity. BMC Ecology, 11: 28 p..Documents numériques
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article (2011)Adobe Acrobat PDF
Titre : A test for pre-adapted phenotypic plasticity in the invasive tree Acer negundo L Type de document : Électronique Auteurs : Laurent Jean Lamarque (1983-) ; Annabel J. Porté ; Camille Eymeric ; Jean-Baptiste Lasnier ; Christopher Lortie ; Sylvain Delzon (1977-) Année de publication : 2013 Article en page(s) : 1-10 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Acer negundo L. Résumé : Phenotypic plasticity is a key mechanism associated with the spread of exotic plants and previous studies have found that invasive species are generally more plastic than co-occurring species. Comparatively, the evolution of phenotypic plasticity in plant invasion has received less attention, and in particular, the genetic basis of plasticity is largely unexamined. Native from North America, Acer negundo L. is aggressively impacting the riparian forests of southern and eastern Europe thanks to higher plasticity relative to co-occurring native species. We therefore tested here whether invasive populations have evolved increased plasticity since introduction. The performance of 1152 seedlings from 8 native and 8 invasive populations was compared in response to nutrient availability. Irrespective of nutrients, invasive populations had higher growth and greater allocation to above-ground biomass relative to their native conspecifics. More importantly, invasive genotypes did not show increased plasticity in any of the 20 traits examined. This result suggests that the high magnitude of plasticity to nutrient variation of invasive seedlings might be pre-adapted in the native range. Invasiveness of A. negundo could be explained by higher mean values of traits due to genetic differentiation rather than by evolution of increased plasticity. Lien pérenne : DOI : 10.1371/journal.pone.0074239 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142568
in PloS ONE > 8 (9) (09/2013) . - 1-10Lamarque, Laurent Jean (1983-), Porté, Annabel J., Eymeric, Camille, Lasnier, Jean-Baptiste, Lortie, Christopher, Delzon, Sylvain (1977-) 2013 A test for pre-adapted phenotypic plasticity in the invasive tree Acer negundo L. PloS ONE, 8(9): 1-10.Documents numériques
Article (2013)URL
