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Auteur Richard Michalet |
Documents disponibles écrits par cet auteur (4)
Affiner la rechercheAcer negundo invasion along a successional gradient: Early direct facilitation by native pioneers and late indirect facilitation by conspecifics / Patrick Saccone in New Phytologist, (2010)
Titre : Acer negundo invasion along a successional gradient: Early direct facilitation by native pioneers and late indirect facilitation by conspecifics Type de document : Électronique Auteurs : Patrick Saccone (1976-) ; Jean-Philippe Pages ; Jacky Girel ; Jean-Jacques Brun ; Richard Michalet Année de publication : 2010 Article en page(s) : 13 p. Langues : Anglais (eng) Catégories : [Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Acer negundo L., 1753 Identifiant pérenne : DOI : 10.1111/j.1469-8137.2010.03289.x / HAL : hal-02667702
in New Phytologist > (2010) . - 13 p.Saccone, P., Pages, J.P., Girel, J., Brun, J.J., Michalet, R., 2010 - Acer negundo invasion along a successional gradient: Early direct facilitation by native pioneers and late indirect facilitation by conspecifics ; New Phytologist : 13 p..Documents numériques
Consultable
Article (2010)Adobe Acrobat PDF
Titre : Les groupements à hautes herbes de l'étage subalpin des Monts Doré (Massif central français) Type de document : Imprimé Auteurs : Richard Michalet ; Thierry Philippe Année de publication : 1985 Langues : Français (fre) Catégories : [Thématique] Groupements végétaux, phytosociologie
[Thématique] Inventaire des milieux, cartographies, relevés phyto-sociologiques
[Thématique] Landes, fourrés et formation herbeuse naturelle et semi-naturelle
[Thématique] Pelouses alpines et subalpines
[Géographique] Monts dore
[Géographique] Massif Central
[Syntaxonomique] Festucion eskiae
[Syntaxonomique] Calamagrostion
[Syntaxonomique] Ligustico mutellinae-Luzulion desvauxii
in Colloques phytosociologiques > XII (1983-1984)Michalet, R., Philippe, T., 1985 - Les groupements à hautes herbes de l'étage subalpin des Monts Doré (Massif central français) ; Colloques phytosociologiques, XII.Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité R2996B 8050 Revue Bureaux Natura 2000 Consultable R2996 8050 Revue Centre de documentation Bibliothèque Consultable
Titre : Quantifying phenological plasticity to temperature in two temperate tree species Type de document : Électronique Auteurs : Yann Vitasse (1981-) ; Caroline C Bresson ; Antoine Kremer (1951-) ; Richard Michalet ; Sylvain Delzon (1977-) Année de publication : 2010 Article en page(s) : 10.1111/j.1365-2435.2010.01748.x Langues : Anglais (eng) Catégories : [Thématique] Phénologie
[Thématique] Rôle de la températur en physiologie végétaleRésumé :
1. Phenotypic plasticity allows large shifts in the timing of phenology within one single generation and drives phenotypic variability under environmental changes, thus it will enhance the inherent adaptive capacities of plants against future changes of climate.
2. Using five common gardens set along an altitudinal gradient (100–1600 m asl.), we experimentally examined the phenotypic plasticity of leaf phenology in response to temperature increase for two temperate tree species (Fagus sylvatica and Quercus petraea). We used seedlings from three populations of each species inhabiting different altitudes (400, 800 and 1200 m asl.). Leaf unfolding in spring and leaf senescence in autumn were monitored on seedlings for 2 years.
3. Overall, a high phenological plasticity was found for both species. The reaction norms of leaf unfolding date to temperature linearly accelerated for both species with an average shift of −5·7 days per degree increase. Timing of leaf senescence exhibited hyperbolic trends for beech due to earlier senescence at the lowest elevation garden and no or slight trends for oak. There was no difference in the magnitude of phenological plasticity among populations from different elevations. For both species, the growing season length increased to reach maximum values at about 10–13 °C of annual temperature according to the population.
4. Since the magnitude of phenological plasticity is high for all the tested populations, they are likely to respond immediately to temperature variations in terms of leaf phenology. Consequently the mid- to high-elevation populations are likely to experience a longer growing season with climate warming. The results suggest that climate warming could lengthen the growing season of all populations over the altitudinal gradient, although the low-elevation populations, especially of beech, may experience accelerated senescence and shorter growing season due to drought and other climate changes associated with warming.Identifiant pérenne : DOI : 10.1111/j.1365-2435.2010.01748.x
in Functional Ecology > (2010) . - 10.1111/j.1365-2435.2010.01748.xVitasse, Y., Bresson, C.C., Kremer, A., Michalet, R., Delzon, S., 2010 - Quantifying phenological plasticity to temperature in two temperate tree species ; Functional Ecology : 10.1111/j.1365-2435.2010.01748.x.Documents numériques
Consultable
Article (2010)URLLe rôle de la facilitation pour la biodiversité dans les environnements contraints / Richard Michalet (2006)
Titre : Le rôle de la facilitation pour la biodiversité dans les environnements contraints Type de document : Extrait d'ouvrage Auteurs : Richard Michalet Année de publication : 2006 Importance : p. 43 Langues : Français (fre) Michalet, R., 2006 - Le rôle de la facilitation pour la biodiversité dans les environnements contraints ; in : Ecoveg 2, 2006, p. 43.
