Détail de l'auteur
Auteur Josette Letouzey |
Documents disponibles écrits par cet auteur (8)
Affiner la rechercheAllozymic variability in beechwoods (Fagus sylvatica L.) over central Europe : spatial differentiation among and within populations / Bernard Comps (1990)
Titre : Allozymic variability in beechwoods (Fagus sylvatica L.) over central Europe : spatial differentiation among and within populations Type de document : Tiré à part de revue Auteurs : Bernard Comps ; Bernard Thiébaut (1942-) ; Ladislav Paule ; Dominique Merzeau ; Josette Letouzey Année de publication : 1990 Importance : 407-417 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Ressources génétiques, banques de gènes, matériel de sélection, diversité génétique Mots-clés : Fagus sylvatica L. Résumé : One hundred and forty beech stands located in central and Mediterranean Europe have been analysed using six enzymatic loci (PX-1 PX-2, GOT-1, IDH-1, MDH-1 and PGI-1). They were investigated on allelic and genotypic levels with the aim of estimating the intra- and inter-population components of their genetic differentiation. Four loci (PX-1 PX-2, MDH-1 and IDH-1) were found rather polymorphic whereas the remaining two (GOT-1 and PGI-1) showed a lower degree of polymorphism. Significant association of climate and allelic diversity was found for two loci (PX-1 and PX-2). Differences between the continental and the Mediterranean regions are sometimes significant at the allelic level, especially for GOT-1, MDH-1 and IDH-1 loci. In all cases, the inter-population component of the diversity is much lower than the intra-population one but it is higher in the Mediterranean region except in the PGI-1 locus. Lien pérenne : DOI : 10.1038/hdy.1990.111 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=129146 Comps, Bernard, Thiébaut, Bernard (1942-), Paule, Ladislav, Merzeau, Dominique, Letouzey, Josette 1990 Allozymic variability in beechwoods (Fagus sylvatica L.) over central Europe : spatial differentiation among and within populations. Heredity, 65(2) : 407-417.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 1967 Comps B. Tiré à part Centre de documentation Tirés à part Consultable Documents numériques
Consultable
Article (1990)URL
Titre : Essai de synthèse phytosociologique sur les hêtraies collinéennes calcicoles du domaine atlantique français Type de document : Tiré à part de revue Auteurs : Bernard Comps ; Josette Letouzey ; Jean Timbal Année de publication : 1980 Importance : 177-191 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Substrat calcaire
[CBNPMP-Thématique] Forêt déciduée (caduque)
[CBNPMP-Thématique] Cartographies phytosociologiques
[CBNPMP-Thématique] Relevés phyto-sociologiques
[CBNPMP-Géographique] Aquitaine
[CBNPMP-Géographique] Domaine atlantique françaisMots-clés : Fagus sylvatica Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=128824 Comps, Bernard, Letouzey, Josette, Timbal, Jean 1980 Essai de synthèse phytosociologique sur les hêtraies collinéennes calcicoles du domaine atlantique français. Documents phytosociologiques, V : 177-191.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 1683 Comps B. Tiré à part Centre de documentation Tirés à part Consultable
Titre : Essai de synthèse phytosociologique sur les hêtraies collinéennes du domaine atlantique français - II-les hêtraies sur sols acides et neutres Type de document : Tiré à part de revue Auteurs : Bernard Comps ; Josette Letouzey ; Jean Timbal Année de publication : 1980 Importance : 409-443 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Relevés phyto-sociologiques
[CBNPMP-Thématique] Forêt déciduée (caduque)
[CBNPMP-Thématique] Substrat siliceux
[CBNPMP-Géographique] AquitaineMots-clés : Fagus sylvatica Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=128822 Comps, Bernard, Letouzey, Josette, Timbal, Jean 1980 Essai de synthèse phytosociologique sur les hêtraies collinéennes du domaine atlantique français - II-les hêtraies sur sols acides et neutres. Documents phytosociologiques, V : 409-443.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 1682 Comps B. Tiré à part Centre de documentation Tirés à part Consultable
Titre : Estimation of Fagus sylvatica L. mating system parameters in natural populations Type de document : Tiré à part de revue Auteurs : Dominique Merzeau ; Bernard Comps ; Bernard Thiébaut (1942-) ; Josette Letouzey Importance : 163-173 Langues : Anglais (eng) Mots-clés : Fagus sylvatica L. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=129148 Merzeau, Dominique, Comps, Bernard, Thiébaut, Bernard (1942-), Letouzey, Josette [sans date] Estimation of Fagus sylvatica L. mating system parameters in natural populations. Annales des sciences forestières, 51 : 163-173.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 1969 Merzeau D. Tiré à part Centre de documentation Tirés à part Consultable
Titre : Etude synsystématique des hêtraies pyrénéennes et des régions limitrophes (Espagne et Piémont aquitain) Type de document : Tiré à part de revue Auteurs : Bernard Comps ; Josette Letouzey ; Jean Timbal Année de publication : 1986 Importance : 145-236 Langues : Français (fre) Catégories : [CBNPMP-Géographique] Aquitaine
[CBNPMP-Géographique] Espagne
[CBNPMP-Géographique] Pyrénées
[CBNPMP-Thématique] Cartes thématiques
[CBNPMP-Thématique] Forêt déciduée (caduque)
[CBNPMP-Thématique] Inventaire floristique
[CBNPMP-Thématique] Relevés phyto-sociologiquesRésumé : The phytosociological study of Pyrenean and Iberic beechwoods has shown three sub-alliances of Fagion: Cephalanthero-Fagenion, Scillo-Fagenion and Luzulo-Fagenion. That last one appears to be not homogeneous and composed with two different sub-alliances which are: Luzulo-Fagenion s. str. and Galio-Fagenion (Gamisans 1977), but in a stricter meaning, in west-mediterranean mountains. The Ilici-Fagion alliance, proposed by Braun-Blanquet, may be kept no longer due to the lack of characteristic species. 1. The associations of the Cephalanthero-Fagenion: The Buxo-Fegetum (700 to 1300 m) is located in Spain (Catalonia and Aragon). That association is more thermophilous than calcicolous. It lays at the border of Quercion pubescentis, but its oro-mediterranean characteristics allowed to consider it rather as one of the Cephalanthero-Fagenion. - The Helloboro-Fagetum is the main association of the Pyrenean Cephalanthero-Fagenion, present all along the chain, with a clinal variation from East to West, inducing three subassociations: a typical one in the central Pyrenees, an eastern one with Helleborus foetidus, and a western one with Saxifraga hirsuta, Brachypodium pinnatum and Vincetoxicum officinale. 2. The associations of Scillo-Fagenion (vicariant sub-alliance of the Eu-Fagenion in Southwest Europe): The Fago-Scilletum (= Scillo-Fagetum) is also present all along the Pyrenean chain, at high altitude, on neutrophilous soils. In the western part of its range, Saxifraga hirsuta sub-associations occur. - The Lathyro lutei-Fagetum is only located in the French central part of the Pyrenees. It is very rich in species with a high frequency of Lathyrus luteus and of thermophilous species originating from the collinean stage of vegetation. - The Scolopendrio-Fagetum (500-900 m) takes the place of the Lathyro-fagetum in the western Pyrenees and forms a transition toward the thermophilous Carpinion. - The Melico-Fagetum cantabricum of the Spain Cantabric Sierra seems to be a substitute both to Scillo-Fagetum and Scolopendrio-Fagetum. It looks very much like the Scillo-Fagetum saxifragetosum hirsuti and an accurate phytosociological comparison between these two syntaxons appears to be very necessary. - The Isopyro-Fagetum described in Navarre by Montserrat includes the Lysimachio nemorum-Fagetum of Gruber (1977) and a lot of "relevés" of Timbal, in Ariège (France). It forms a transition to the Luzulo-Fagenion. 3. Mountain acidophilous beechwoods: a) Galio-Fagenion(p.p.) - The Luzulo niveae-Fagetum (1000-1500 m) is located in the eastern part of the Pyrenees. It is the western oro-mediterranean vicariant of the Luzulo albidae-Fagetum (Middle Europe). - The Deschampsio (flexuosae)-Fagetum (1000-1700 m) has been first described in the Massif of Montseny (Spanish Catalonia). It also occurs in the Vallespir valley (French Catalonia). It is constituted of more thermophilous species than the Luzulo niveae-Fagetum. - The Galio (rotundifolii)-Fagetum (1100-1700 m) clusters some upper acid beechwoods in central Spain and the central Pyrenees, in a rather continental climate. b) Luzulo-Fagenion beechwoods - The Luzulo-Fagetum pyrenaïcum (ass. nov. prov.) is floristically poor. It is located on acid soils in the French central Pyrenees. It appears to be a marginal form (floristically impoverished) of the middle European Luzulo-Fagenion. - The Saxifrago hirsutae-Fagetum of the western Pyrenees and of the Cantabrian chain is a mountain, acidophilous association characterized by its atlantic climate and the abundance of Bryophytes. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=128821 Comps, Bernard, Letouzey, Josette, Timbal, Jean 1986 Etude synsystématique des hêtraies pyrénéennes et des régions limitrophes (Espagne et Piémont aquitain). Phytocoenologia, 14(2) : 145-236.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 1681A Comps Tiré à part Centre de documentation Bibliothèque Consultable
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