Détail de l'auteur
Auteur Vilà Montserrat |
Documents disponibles écrits par cet auteur (4)
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la recherche
Cortaderia selloana seed germination under different ecological conditions / Roser Domènech in Acta Oecologica, vol. 33, n°1 (Année 2008)
[article]
Titre : Cortaderia selloana seed germination under different ecological conditions Type de document : texte imprimé Auteurs : Roser Domènech, Auteur ; Vilà Montserrat, Auteur Année de publication : 2008 Article en page(s) : pp. 93-96 Langues : Français (fre) Catégories : [Espèces (in biblio)] Cortaderia selloana (Schult. & Schult.f.) Asch. & Graebn.
[Thèmes] Herbe de la pampaMots-clés : plante exotique test de germination lumière gradient de texture du sol Résumé : "Biological invasions are causing the extinction of native species and modifying ecosystem functions. Invasion success depends, among other factors, on the biological attributes of the invaders and the abiotic characteristics of the recipient community. Cortaderia selloana is a gynodioecious perennial grass native to South America which is considered invasive worldwide. It is known that seedlings of this species tolerate a wide range of environmental conditions. However, the abiotic factors that may favour its seed germination have not been studied in much detail. For this reason, we conducted an array of germination tests with different degrees of shading, soil textures and water availability. Although C. selloana usually grows in disturbed sites where light is highly available, we found that seed germination was higher under shaded conditions than under 100% light. Seed germination was higher in sandy soil textures and decreased in soils which contained increased levels of clay. Mature C. selloana plants have been reported to tolerate water stress, yet we found that the shortage of water availability constrained seed germination to approximately 60%. Overall, C. selloana seeds seem to germinate under a wide range of environmental conditions, yet germination rate can be improved under shading, high levels of sand and with high water availability." (source : auteurs) Type de publication : périodique Référence biblio : Domènech R., Montserrat V., 2008 - Cortaderia selloana seed germination under different ecological conditions. Acta Oecologica, 33 (1) : 93-96. ID PMB : 62684 DOI : 10.1016/j.actao.2007.09.004 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=62684
in Acta Oecologica > vol. 33, n°1 (Année 2008) . - pp. 93-96[article]Exemplaires(0)
Disponibilité aucun exemplaire Fruit Choice and Seed Dispersal of Invasive vs. Non invasive Carpobrotus (Aizoaceae) in Coastal California / Vilà Montserrat in Ecology, vol. 79, n°3 (Année 1998)
[article]
Titre : Fruit Choice and Seed Dispersal of Invasive vs. Non invasive Carpobrotus (Aizoaceae) in Coastal California Type de document : texte imprimé Auteurs : Vilà Montserrat, Auteur ; Carla M. D'Antonio, Auteur Année de publication : 1998 Article en page(s) : pp. 1053-1060 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Carpobrotus edulis Mots-clés : plante exotique envahissante hybridation herbivorie fruit Dispersion de graine Résumé : "Natural hybridization between previously allopatric plant species can produce highly successful lineages. However, the ecological processes controlling the spread of hybrid genotypes have rarely been studied in the field. We compared fruit characteristics, fruit preference, and seed dispersal by native frugivores among the non-indigenous succulent Carpobrotus edulis, the putative native congener C. chilensis, and the hybrids resulting from introgressive hybridization. In this system, the non-native C. edulis and hybrids are known to be very successful invaders of California coastal plant communities. Carpobrotus edulis and hybrids produced more fruits per clone than C. chilensis, primarily as a consequence of larger clone size. Clone size and energy content of fruits were good predictors of fruit removal. Marked fruits of C. edulis and hybrids were removed faster than those of the other morphotypes, and C. edulis fruits were preferred over those of C. chilensis in a fruit transplant experiment. However, total fruit removal by the end of the growing season was very high for all morphotypes. Scats from black-tailed jackrabbit (Lepus californicus) and mule deer (Odocoileus hemionus), the most common frugivores in our sites, contained more seeds from C. edulis and hybrid morphotypes than from C. chilensis, and more than would be expected based on relative fruit abundance. Germination of seeds from C. edulis and hybrids was enhanced after gut passage, whereas germination of C. chilensis decreased after gut passage, compared to seed germination from intact fruits. The results suggest that patterns of fruit preference by native frugivores and seed survival after gut passage facilitate the successful spread of an aggressive introduced species and hybrids in contrast to the less aggressive, apparently native congener." (source : auteurs) Type de publication : périodique Référence biblio : Montserrat V., D'Antonio C., 1998 - Fruit Choice and Seed Dispersal of Invasive vs. Non invasive Carpobrotus (Aizoaceae) in Coastal California. Ecology, 79 (3) : 1053-1060. ID PMB : 71061 DOI : 10.2307/176600 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71061
in Ecology > vol. 79, n°3 (Année 1998) . - pp. 1053-1060[article]Exemplaires(0)
Disponibilité aucun exemplaire Hybrid Vigor for Clonal Growth in Carpobrotus (Aizoaceae) in Coastal California / Vilà Montserrat in Ecological Applications, vol. 8, n°4 (Année 1998)
[article]
Titre : Hybrid Vigor for Clonal Growth in Carpobrotus (Aizoaceae) in Coastal California Type de document : texte imprimé Auteurs : Vilà Montserrat, Auteur ; Carla M. D'Antonio, Auteur Année de publication : 1998 Article en page(s) : pp. 1196-1205 Langues : Anglais (eng) Catégories : [ZG] États-Unis
[habitats/milieux] 1 - Habitats littoraux et halophile
[Espèces (in biblio)] Carpobrotus edulis
[Thèmes] Mammifère
[Thèmes] PâturageMots-clés : plante exotique envahissante invasion biologique hybridation herbivorie Résumé : "One of the consequences of the human-caused movement of plant species around the globe is hybridization between previously allopatric species. Introgressive hybridization between the non-native, invasive perennial succulent Carpobrotus edulis and the putative native, non-invasive C. chilensis is occurring throughout coastal California, leading to a high abundance of aggressive hybrid morphotypes and the loss of open space for native species establishment and growth. We test the hypothesis that hybrid vigor for vegetative growth and resistance to herbivory contributes to successful invasion by hybrid morphotypes. We compared survival and vegetative growth of transplanted cuttings of three morphotypes (parental species and hybrids) in three habitats in a factorial watering and caging experiment. Overall Carpobrotus growth was both water and herbivore limited. Hybrids displayed higher growth than either parental species. Hybrids always had higher survival in response to herbivory than C. chilensis, but survived better than C. edulis only in the bluff scrub. Growth of hybrids was higher than C. chilensis in the backdune and grassland but only higher than C. edulis in the backdune. Carpobrotus chilensis had the lowest survival to herbivory and the slowest growth. Our data suggest that greater resistance to mammalian herbivory coupled with hybrid vigor for vegetative growth can contribute to the invasive status of hybrids. High susceptibility to browsing and slow growth of C. chilensis at least partially explain its non-aggressive nature in coastal California." (source : auteurs) Type de publication : périodique Référence biblio : Montserrat V., D'Antonio C.-M., 1998 - Hybrid Vigor for Clonal Growth in Carpobrotus (Aizoaceae) in Coastal California. Ecological Applications, 8 (4) : 1196-1205. ID PMB : 71060 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71060
in Ecological Applications > vol. 8, n°4 (Année 1998) . - pp. 1196-1205[article]Exemplaires(0)
Disponibilité aucun exemplaire Which Taxa Are Alien? Criteria, Applications, and Uncertainties / Franz Essl in Bioscience, vol. 68, n°7 (Année 2018)
[article]
Titre : Which Taxa Are Alien? Criteria, Applications, and Uncertainties Type de document : texte imprimé Auteurs : Franz Essl, Auteur ; Sven Buerki, Auteur ; Piero Genovesi, Auteur ; Philip E. Hulme, Auteur ; Jonathan M Jeschke, Auteur ; Stelios Katsanevakis, Auteur ; Ingo Kowarik, Auteur ; Ingolf Kühn, Auteur ; Petr Pysek, Auteur ; Wolfgang Rabitsch, Auteur ; Stefan Schindler, Auteur ; Mark van Kleunen, Auteur ; Vilà Montserrat, Auteur ; John R. U. Wilson, Auteur ; David M. Richardson, Auteur Année de publication : 2018 Article en page(s) : pp. 496-509 Langues : Anglais (eng) Mots-clés : biogéographie invasion biologique cryptogénique critère de classification Résumé : "Human activities such as the transport of species to new regions and modifications of the environment are increasingly reshaping the distribution of biota. Accordingly, developing robust, repeatable, and consistent definitions of alien species that serve scientific and policy purposes has become of prime importance. We provide a set of classification criteria that are widely applicable across taxa and realms and offer guidance on their use in practice. The criteria focus on (a) acknowledging the role of assessment uncertainty, (b) incorporating time since introduction, (c) considering infraspecific taxonomic ranks, and (d) differentiating between alien species whose survival depends on explicit human assistance from those that survive without such assistance. Furthermore, we make recommendations for reducing assessment uncertainty, suggest thresholds for species assessment, and develop an assessment scheme. We illustrate the application of the assessment criteria with case studies. Finally, the implications for alien species management, policy, and research are discussed." (source : auteurs) Type de publication : périodique Référence biblio : Essl F., Buerki S., Genovesi P., Hulme P., Jeschke J., Katsanevakis S., Kowarik I., Kühn I., Pysek P., Rabitsch W., Schindler S., van Kleunen M., Montserrat V., Wilson J.-U., Richardson D., 2018 - Which Taxa Are Alien? Criteria, Applications, and Uncertainties. Bioscience, 68 (7) : 496-509. ID PMB : 69137 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69137
in Bioscience > vol. 68, n°7 (Année 2018) . - pp. 496-509[article]Exemplaires(0)
Disponibilité aucun exemplaire