Catégories
Documents disponibles dans cette catégorie (64)
Affiner la recherche
Genetic and morphological diversity in Armeria (Plumbaginaceae) is shaped by glacial cycles in Mediterranean refugia / Javier Fuertes Aguilar in Anales del Jardín Botánico de Madrid (1979), 68 (2) (12/2011)
[article]
Titre : Genetic and morphological diversity in Armeria (Plumbaginaceae) is shaped by glacial cycles in Mediterranean refugia Type de document : Imprimé Auteurs : Javier Fuertes Aguilar (1960-) ; Belen Gutiérrez Larena ; Gonzalo Nieto Feliner Année de publication : 2011 Article en page(s) : 175-197 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Morphologie végétale
[CBNPMP-Thèmes] Diversité génétiqueMots-clés : Armeria Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=141957
in Anales del Jardín Botánico de Madrid (1979) > 68 (2) (12/2011) . - 175-197Fuertes Aguilar, J., Gutiérrez Larena, B., Nieto Feliner, G. 2011. Genetic and morphological diversity in Armeria (Plumbaginaceae) is shaped by glacial cycles in Mediterranean refugia. Anales del Jardín Botánico de Madrid (1979), 68(2): 175-197.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R11866 P-122 Revue Centre de documentation Revues Consultable Genetic considerations in ecosystem restoration using native tree species / Evert Thomas in Forest ecology and management, 333 (2014)
[article]
Titre : Genetic considerations in ecosystem restoration using native tree species Type de document : Imprimé Auteurs : Evert Thomas ; Riina Jalonen ; Judy Loo ; David Boshier ; Leonardo Gallo ; Stephen Cavers ; Sándor Bordács ; Paul Smith ; Michele Bozzano Année de publication : 2014 Article en page(s) : 66-75 Langues : Français (fre) Catégories : [CBNPMP-Thèmes] Restauration des écosystèmes
[CBNPMP-Thèmes] Diversité génétiqueRésumé : Rehabilitation and restoration of forest ecosystems are in growing demand to tackle climate change, biodiversity loss and desertification—major environmental problems of our time. Interest in restoration of ecosystems is increasingly translated into strong political commitment to large-scale tree planting projects. Along with this new impetus and the enormous scale of planned projects come both opportunities and risks: opportunities to significantly increase the use of native species, and risks of failure associated with the use of inadequate or mismatched reproductive material, which though it may provide forest cover in the short term, will not likely establish a self-sustaining ecosystem. The value of using native tree species in ecosystem restoration is receiving growing recognition both among restoration practitioners and policy makers. However, insufficient attention has been given to genetic variation within and among native tree species, their life histories and the consequences of their interactions with each other and with their environment. Also restoration practitioners have often neglected to build in safeguards against the anticipated effects of anthropogenic climate change. Measurement of restoration success has tended to be assessments of hectares covered or seedling survival in a short timeframe, neither of which is an indicator of ecosystem establishment in the long term. In this article, we review current practices in ecosystem restoration using native tree species, with a particular focus on genetic considerations. Our discussion is organised across three themes: (i) species selection and the sourcing of forest reproductive material; (ii) increasing resilience by fostering natural selection, ecological connectivity and species associations; and (iii) measuring the success of restoration activities. We present a number of practical recommendations for researchers, policymakers and restoration practitioners to increase the potential for successful interventions. We recommend the development and adoption of decision-support tools for: (i) collecting and propagating germplasm in a way that ensures a broad genetic base of restored tree populations, including planning the sourcing of propagation material of desired species well before the intended planting time; (ii) matching species and provenances to restoration sites based on current and future site conditions, predicted or known patterns of variation in adaptive traits and availability of seed sources; and (iii) landscape-level planning in restoration projects. Lien pérenne : DOI : 10.1016/j.foreco.2014.07.015 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149227
in Forest ecology and management > 333 (2014) . - 66-75Thomas, E., Jalonen, R., Loo, J., Boshier, D., Gallo, L., Cavers, S., Bordács, S., Smith, P., Bozzano, M. 2014. Genetic considerations in ecosystem restoration using native tree species. Forest ecology and management, 333: 66-75.Documents numériques
Consultable
Article (2014)URL Genetic differentiation among populations of Sesleria albicans Kit. ex Schultes (Poaceae) from ecologically different habitats in central Europe / Christoph Reisch in Heredity, 91 (2003)
[article]
Titre : Genetic differentiation among populations of Sesleria albicans Kit. ex Schultes (Poaceae) from ecologically different habitats in central Europe Type de document : Imprimé Auteurs : Christoph Reisch ; Peter Poschlod ; R. Wingender Année de publication : 2003 Article en page(s) : 519-527 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Diversité génétique Mots-clés : Sesleri albicans Kit. ex Schultes Résumé : As observed for many other plant species, the populations of Sesleria albicans in Central Europe are located in habitats, which differ to a high degree from each other with regard to ecological factors such as nutrients, light and water as well as in type of land use. The species colonizes limestone cliffs, pavements, screes, grazed and mown grasslands, heaths, fens and open woodlands. In this study, we used random amplified polymorphic DNA (RAPD) analysis to investigate the genetic differentiation among 25 populations of S. albicans from six different types of habitat (beech forests, alpine and lowland rocky ridges, lowland screes, fens, calcareous grasslands). With RAPD analysis, 344 fragments could be amplified, of which 95.9% were polymorphic. The level of polymorphism ranged from 29.7 to 56.7% polymorphic bands per population and was correlated with population size. In an analysis of molecular variance (AMOVA), used to detect variation among individuals within populations, among populations from the same habitat and among different habitats, most of the genetic variation was found within populations (62.06%) and among populations from the same habitat (33.36%). In contrast, only a very low level of differentiation could be observed among different habitats (4.58%). The results of our study give only little evidence for an ecotypic differentiation of Sesleria albicans. This differentiation is principally conceivable, but obviously not related to the investigated RAPD loci. Lien pérenne : DOI : 10.1038/sj.hdy.6800350 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148350
in Heredity > 91 (2003) . - 519-527Reisch, C., Poschlod, P., Wingender, R. 2003. Genetic differentiation among populations of Sesleria albicans Kit. ex Schultes (Poaceae) from ecologically different habitats in central Europe. Heredity, 91: 519-527.Genetic divergence in forest trees: understanding the consequences of climate change / Antoine Kremer in Functional Ecology, 28 (2014)
[article]
Titre : Genetic divergence in forest trees: understanding the consequences of climate change Type de document : Électronique Auteurs : Antoine Kremer (1951-) ; Brad M. Potts ; Sylvain Delzon (1977-) Année de publication : 2014 Article en page(s) : 22-36 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Diversité génétique
[CBNPMP-Thèmes] Relations climat-végétationNote de contenu : 1-Predicted climate change is heading in many respects into untested environmental conditions for trees and to the reshuffling of species distributions. We explore the consequences that these changes are likely to have on population differentiation of adaptive traits. Superimposed on the spatial redistribution of the species, will there be a redistribution of their genetic variation? 2-We base our predictions on a conceptual framework, whose elements are the extant differentiation, and the predicted divergent evolution of populations along purposely chosen altitudinal/latitudinal gradients. We consider simultaneously phenotypic and genetic divergence, but emphasize genetically driven population differentiation. We illustrate phenotypic and genetic patterns of variation with examples from well-studied northern and southern hemisphere tree genera Quercus and Eucalyptus. 3-Most phenotypic traits show very large in situ clinal variation with variation in altitude or latitude. Genetic clines detected in common gardens usually follow the observed in situ phenotypic clines, reflecting cogradient variation. Rare counter gradients have also been detected, where phenotypic and genetic clines exhibit opposing signs. These patterns suggest that plasticity and selection contributed in most cases synergistically to the extant differentiation. 4- We anticipate that microevolutionary processes will be different along environmental gradients. At the leading edge, availability of newly suitable habitats will trigger migration favouring genotypes equipped with colonists attributes. At the rear edges of the distribution, populations will be submitted to strong selective pressures favouring genotypes capable of withstanding drought and heat stress. Central populations will benefit from the plastic response of trees that will temporarily compensate for the maladaptation, until genetic adaptive variation will be restored by gene flow, mutation or recombination. 5-We make predictions about future differentiation along environmental gradients, by highlighting traits that are likely to diverge, the rate at which differentiation will take place, and the role of gene flow and hybridization. We envisage that parallel selection may maintain differentiation at extant levels, whereas divergent selection will promote substantial differentiation for traits facilitating adaptation to contrasting conditions along the environmental gradient. We anticipate that genetic divergence may occur very rapidly and will be enhanced by the multilocus architecture of most adaptive traits.
Lien pérenne : DOI : 10.1111/1365-2435.12169 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=143548
in Functional Ecology > 28 (2014) . - 22-36Kremer, A., Potts, BM., Delzon, S. 2014. Genetic divergence in forest trees: understanding the consequences of climate change. Functional Ecology, 28: 22-36.Documents numériques
Consultable
Article (2014)URL
[article]
Titre : Genetic Erosion : No longer just an agricultural issue Type de document : Imprimé Auteurs : Deborah L. Rogers Année de publication : 2004 Article en page(s) : 113-122 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Généralités en amélioration des plantes et valorisation
[CBNPMP-Thèmes] Revégétalisation
[CBNPMP-Thèmes] Diversité génétiqueRésumé : Genetic considerations pertaining to planting projects usually emphasize locally adapted source material. However, the amount of genetic diversity in the plant materials is important as well. Genetic erosion is the loss of genetic diversity—often magnified or accelerated by human activities. In native plant populations, genetic erosion results from habitat loss and fragmentation, but it also can result from a narrow genetic base in the original collections or by practices that reduce genetic diversity. Although species-specific guidelines are not available, managers can minimize the risk of genetic erosion by being familiar with the biology of the affected species (including breeding system, mode of reproduction, and pattern of genetic diversity). Narrowly based genetic collections should be avoided, providers of plant materials for revegetation projects should offer information on their collection methods, and nursery managers should endeavor to minimize diversity losses at all stages of nursery culture. Lien pérenne : DOI : 10.2979/NPJ.2004.5.2.112 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148346
in Native Plants Journal > 5 (2) (2004) . - 113-122Rogers, DL. 2004. Genetic Erosion : No longer just an agricultural issue. Native Plants Journal, 5(2): 113-122.Documents numériques
Consultable
Article (2004)URL Genetic structure and differentiation in cultivated grape, Vitis vinifera L. / Mallikarjuna K. Aradhya (2003)
PermalinkGenetically appropriate choices for plant materials to maintain biological diversity / Deborah L. Rogers (2004)
PermalinkLa gestion de la variabilité génétique dans le programme d'amélioration du Pin maritime (Pinus pinaster Ait.) / Laurent Bouffier in Revue forestière française, 61 (4) (08/2009)
PermalinkGuidelines for ex situ conservation collection management : minimizing risks : appendix 3 / Kayri Havens (2004)
PermalinkL'hybridation entre Pinus sylvestris L. (Pin sylvestre) et Pinus uncinata Ram. (Pin à crochets) dans les Pyrénées françaises : importance du phénomène et rôle du synchronisme en conditions naturelles / Guillaume Bouchet (2007)
PermalinkHybridization as a stimulus for the evolution of invasiveness in plants / Norman Carl Ellstrand (2000)
PermalinkL'importance de la double domestication pour l'amélioration du haricot commun (Phaseolus vulgaris L.) / Hubert Bannerot (1992)
PermalinkIntegrating quantitative genetics into ex situ conservation and restoration practices / Pati Vitt (2004)
PermalinkJournée régionale d'information sur les chênes indigènes (chêne sessile - chêne pédonculé) / Centre régional de la propriété forestière (CRPF) (Midi-Pyrénées) (1996)
PermalinkMitochondrial DNA diversity and phenotypic variation in wild and cultivated populations of Medicago sativa : insights into the dynamics of contact zones between the two related forms / Marie-Hélène Muller in Genetics Selection Evolution, 33 (suppl. 1) (2001)
PermalinkOlive domestication from structure of oleasters and cultivars using nuclear RAPDs and mitochondrial RFLPs / Guillaume Besnard in Genetics Selection Evolution, 33 (suppl. 1) (2001)
PermalinkPacific northwest forest three seed zones A template for native plants? / G. Randi Johnson in Native Plants Journal, 5 (2) (2004)
PermalinkLe patrimoine génétique : la diversité et la ressource, 4ème colloque national / Bureau des ressources génétiques (BRG) (France) (2002)
PermalinkPierre-Henri Gouyon ou la science buissonnière / Cécile Breton in Espèces, 4 (06/2012)
PermalinkPlantes hybrides de France- tome V-VII (1929-1931): Monographie des Hybrides de Saxifrages Dactylites dits Dactyloides / Dominique Luizet (1931)
PermalinkPopulation genetic diversity and structure of a naturally isolated plant species, Rhodiola dumulosa (Crassulaceae) / Yan Hou in PloS ONE, 6 (9) (09/2011)
PermalinkProtection de la diversité génétique des arbres pyrénéens et amélioration de sa gestion. Un exemple : le Bassin de la Pique (Haute-Garonne) / Michel Bartoli (1999)
PermalinkLes races chromosomiques du Bupleurum ranunculoides L. (ombellifère) et leurs relations, dans les Pyrénées, avec les glaciations quaternaires / Anne-Marie Cauwet-Marc (1971)
PermalinkRepérage moléculaire et comparaison de provenances exotiques et locales de chênes pédonculés en forêt domaniale de Compiègne / I. Lesur (1999)
PermalinkLes ressources génétiques face aux nouveaux enjeux, environnementaux, économiques et sociétaux : colloque 20,21 & 22 septembre 2011, Le Corum, Montpellier / FRB Fondation pour la recherche sur la biodiversité (2011)
Permalink