References of "Mahy, Grégory"
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See detailAppui à la création d’un diplôme d’études approfondies en biologie végétale et environnement à l’Université de Lubumbashi et remédiation multiscalaire des sols contaminés.
Ngongo Luhembwe, M; Bogaert, Jan ULg; Colinet, Gilles ULg et al

in Dahdouh-Guebas, F (Ed.) Proceedings of the Symposium on African Botany in Brussels (2009)

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See detailSpatial genetic structure in Milicia excelsa (Moraceae) indicates extensive gene dispersal in a low-density wind-pollinated tropical tree
Bizoux, Jean-Philippe ULg; Daïnou, Kasso ULg; Bourland, Nils ULg et al

in Molecular Ecology (2009), 18

In this study, we analysed spatial genetic structure (SGS) patterns and estimated dispersal distances in Milicia excelsa (Welw.) C.C. Berg (Moraceae), a threatened windpollinated dioecious African tree ... [more ▼]

In this study, we analysed spatial genetic structure (SGS) patterns and estimated dispersal distances in Milicia excelsa (Welw.) C.C. Berg (Moraceae), a threatened windpollinated dioecious African tree, with typically low density ( 10 adults ⁄km2). Eight microsatellite markers were used to type 287 individuals in four Cameroonian populations characterized by different habitats and tree densities. Differentiation among populations was very low. Two populations in more open habitat did not display any correlation between genetic relatedness and spatial distance between individuals, whereas significant SGS was detected in two populations situated under continuous forest cover. SGS was weak with a maximum Sp-statistic of 0.006, a value in the lower quartile of SGS estimates for trees in the literature. Using a stepwise approach with Bayesian clustering methods, we demonstrated that SGS resulted from isolation by distance and not colonization by different gene pools. Indirect estimates of gene dispersal distances ranged from rg = 1 to 7.1 km, one order of magnitude higher than most estimates found in the literature for tropical tree species. This result can largely be explained by life-history traits of the species. Milicia excelsa exhibits a potentially wideranging wind-mediated pollen dispersal mechanism as well as very efficient seed dispersal mediated by large frugivorous bats. Estimations of gene flow suggested no major risk of inbreeding because of reduction in population density by exploitation. Different strategy of seed collection may be required for reforestation programmes among populations with different extent of SGS. [less ▲]

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See detailFiches descriptives des principales espèces de plantes invasives: Azolla filiculoides
Pieret, Nora; Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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See detailFiches descriptives des principales espèces de plantes invasives: Ludwigia 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: Lagarosiphon major
Pieret, Nora; Delbart, Emmanuel ULg; Mahy, Grégory ULg

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See detailFiches descriptives des principales espèces de plantes invasives: Crassula helmsii
Pieret, Nora; Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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See detailFiches descriptives des principales espèces de plantes invasives: Egeria densa
Pieret, Nora; Delbart, Emmanuel ULg; Mahy, Grégory ULg

Learning material (2009)

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

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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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