References of "Mahy, Grégory"
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See detailFiches descriptives des principales espèces de plantes invasives: Lemna spp.
Pieret, Nora; Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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See detailFiches descriptives des principales espèces de plantes invasives: Elodea spp.
Pieret, Nora; Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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See detailFiche synthétique de gestion: Heracleum mantegazzianum
Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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See detailFiche synthétique de gestion: Impatiens glandulifera
Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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See detailDecline Of Endemic Oncocyclus Irises (Iridaceae) Of Lebanon: Survey And Conservation Needs
Saad, Layla ULg; Talhouk, Salma; Mahy, Grégory ULg

in Oryx (2009), 43(1), 91-96

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See detailInvasions biologiques: un peu de vocabulaire
Jacquemart, Anne-Laure; Vervoort, Arnaud; Lhoir, P. et al

in Silva Belgica (2009)

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See detailMolecular And Morphological Variation Of Rare Endemic Oncocyclus Irises (Iridaceae) Of Lebanon
Saad, Layla ULg; Mahy, Grégory ULg

in Botanical Journal of the Linnean Society (2009), 159

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See detailLe cotoneaster horizontal sur pelouses calcicoles: de l'ornement à la gestion
Piqueray, Julien ULg; Halford, Mathieu ULg; Massoz, Aurélie ULg et al

in Parcs & Réserves (2009), 64(4), 23-26

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See detailÉvolution des traits d’histoire de vie lors des invasions végétales
Monty, Arnaud ULg; Mahy, Grégory ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2009), 13(3), 449-458

Les invasions par les plantes, malgré les problèmes qu’elles engendrent, sont des opportunités d’étude des phénomènes évolutifs rapides. Dans cet article sont présentés les principaux changements ... [more ▼]

Les invasions par les plantes, malgré les problèmes qu’elles engendrent, sont des opportunités d’étude des phénomènes évolutifs rapides. Dans cet article sont présentés les principaux changements évolutifs d’histoire de vie accompagnant les invasions végétales. Ceux-ci peuvent avoir lieu lors des différentes phases de l’invasion que sont l’introduction, la naturalisation et l’expansion proprement dite. Leur étude s’articule généralement en deux approches : les comparaisons entre populations de l’aire d’indigénat et de l’aire d’invasion d’une part, et d’autre part, les études de la différenciation au sein de l’aire d’invasion. [less ▲]

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See detailLes plantes exotiques envahissantes en Belgique ont-elles des impacts?
Saad, Layla ULg; Jacquemart, Anne-Laure; Cawoy, Valérie et al

in Parcs & Réserves (2009), 64(4), 10-16

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See detailCLANIMAE:Climatic and Anthropogenic Impacts on African Ecosystems. Final Report Phase 1 (2007-2008)
Verschuren, Dirk; Plisnier, Pierre-Denis; Hugues, Harold et al

Report (2009)

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See detailInvasive plant species management tests in Southern Belgium
Delbart, Emmanuel ULg; Halford, Mathieu ULg; Pieret, Nora et al

Poster (2009)

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See detailClinal differentiation during invasion: Senecio inaequidens (Asteraceae) along altitudinal gradients in Europe.
Monty, Arnaud ULg; Mahy, Grégory ULg

Poster (2009)

Plant population differentiation may play a role in decreasing the ability to predict whether, where, and when an introduced species will invade. However, few studies have addressed the level of genetic ... [more ▼]

Plant population differentiation may play a role in decreasing the ability to predict whether, where, and when an introduced species will invade. However, few studies have addressed the level of genetic change an alien species may undergo during range expansion, e.g. in response to climatic variation with altitude. In the present study, we tested the hypothesis that invasive populations of Senecio inaequidens (Asteraceae) differentiated during migration from two independent introduction sites into divergent altitudinal and climatic zones. We carried out two years of common garden experiments with eight populations from a Belgian altitudinal transect and ten populations from similar French transect. Climatic analysis revealed that the Belgian transect followed a temperature and precipitation gradient. A temperature and summer drought gradient characterized the French study site. We evaluated differentiation and clinal variation in the following characters: days to germination, days to flowering, height at maturity, final plant height and aboveground biomass. Results showed that S. inaequidens populations differentiated in growth traits during invasion. First year of experiment, regressing population growth trait means against source population altitude indicated the presence of clinal variation along both transects. Second year, similar results were found along the French transect, i.e. a reduction in height at maturity, plant height and aboveground biomass with increasing altitude. Including seed mass as a covariate did not change the outcome of the analysis. The possible evolutionary causes for the differentiation observed are discussed. [less ▲]

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See detailEditorial : Les invasions biologiques ... appréhender la démesure
Vanderhoeven, Sonia ULg; Branquart, Etienne; Mahy, Grégory ULg

in Parcs & Réserves (2009), 3

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