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Affiner la rechercheA propos d'un comptage chromosomique de Dryopteris submontana (Fräser-Jenkins & Jermy) Fraser-Jenkins dans les Pyrenees frangaises (Dryopteridaceae, Pteridophyta). Repartition de cette espece sur la chaine pyreneenne / Michel Boudrie in Botanica helvetica, 102 (1992)
Titre : A propos d'un comptage chromosomique de Dryopteris submontana (Fräser-Jenkins & Jermy) Fraser-Jenkins dans les Pyrenees frangaises (Dryopteridaceae, Pteridophyta). Repartition de cette espece sur la chaine pyreneenne Type de document : Imprimé Auteurs : Michel Boudrie ; Rémy Prelli (1947-) ; Jakob Schneller Année de publication : 1992 Article en page(s) : 121-128 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Chorologie
[CBNPMP-Géographique] PyrénéesMots-clés : Dryopteris submontana (Fraser-Jenkins & Jermy)Fraser-Jenkins Résumé : Our interest has been focused on particular specimens of Dryopteris of the villarii-sub-montana complex from certain localities in the Central Pyrenees of France which were morphologically identical with the alpine diploid D. villarii. A chromosome count of plants from these populations showed them to be tetraploid and therefore D. submontana-, this indicates that this group shows a strong morphological variability, making in certain cases chromosome counts necessary for definite identification. The Pyrenean distribution of this South European calcicole montane tetraploid species is mainly in the Central and Western Pyrenees, both in France and in Spain Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154578
in Botanica helvetica > 102 (1992) . - 121-128Boudrie, Michel, Prelli, Rémy (1947-), Schneller, Jakob 1992 A propos d'un comptage chromosomique de Dryopteris submontana (Fräser-Jenkins & Jermy) Fraser-Jenkins dans les Pyrenees frangaises (Dryopteridaceae, Pteridophyta). Repartition de cette espece sur la chaine pyreneenne. Botanica helvetica, 102: 121-128.Documents numériques
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Article (1992)URLA propos d'un comptage chromosomique de Dryopteris submontana (Fräser-Jenkins & Jermy) Fraser-Jenkins dans les Pyrenees frangaises (Dryopteridaceae, Pteridophyta). Repartition de cette espece sur la chaine pyreneenne / Michel Boudrie (1992)
Titre : A propos d'un comptage chromosomique de Dryopteris submontana (Fräser-Jenkins & Jermy) Fraser-Jenkins dans les Pyrenees frangaises (Dryopteridaceae, Pteridophyta). Repartition de cette espece sur la chaine pyreneenne Type de document : Tiré à part de revue Auteurs : Michel Boudrie ; Rémy Prelli (1947-) ; Jakob Schneller Année de publication : 1992 Importance : 121-128 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Chorologie
[CBNPMP-Géographique] PyrénéesMots-clés : Dryopteris submontana (Fraser-Jenkins & Jermy)Fraser-Jenkins Résumé : Our interest has been focused on particular specimens of Dryopteris of the villarii-sub-montana complex from certain localities in the Central Pyrenees of France which were morphologically identical with the alpine diploid D. villarii. A chromosome count of plants from these populations showed them to be tetraploid and therefore D. submontana-, this indicates that this group shows a strong morphological variability, making in certain cases chromosome counts necessary for definite identification. The Pyrenean distribution of this South European calcicole montane tetraploid species is mainly in the Central and Western Pyrenees, both in France and in Spain Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154579 Boudrie, Michel, Prelli, Rémy (1947-), Schneller, Jakob 1992 A propos d'un comptage chromosomique de Dryopteris submontana (Fräser-Jenkins & Jermy) Fraser-Jenkins dans les Pyrenees frangaises (Dryopteridaceae, Pteridophyta). Repartition de cette espece sur la chaine pyreneenne. Botanica helvetica, 102 : 121-128.Exemplaires (1)
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Article (1992)URL
Titre : Understanding population history for conservation purposes: population genetics of Saxifraga Aizoides (saxifragaceae) in the lowlands and lower mountains North of the Alps Type de document : Tiré à part de revue Auteurs : Eva Lutz ; Johann Jakob Schneller (1942-) ; Rolf Holderegger (1965-) Année de publication : 2000 Importance : 583-590 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Distribution de la diversité génétique
[CBNPMP-Thématique] Histoire de la végétation, paléoécologieMots-clés : Saxifraga aizoides L. Résumé : Several alpine species have outlying populations in the lowlands and lower mountains north of the Alps. These small, isolated populations are usually described as either (1) glacial relics, (2) descendants from populations living on forelands and moraines during the ice ages, or (3) populations founded by long-distance dispersal after glaciation. A floristic survey of the historic and present distributions and an allozyme investigation were performed on one of these relic species, Saxifraga aizoides. The species was historically more abundant and had more stations in more regions of northeastern Switzerland. The former population structures within regions, nowadays destroyed, were still reflected in distinct and high regional genetic diversity and variation. There was weak evidence of increased inbreeding in outlying populations, but populations did not deviate from Hardy-Weinberg equilibrium. No geographic pattern of genetic variation above the regional scale (>10 km) was found. Based on the spatial and genetic structures found, it was not possible to discriminate between the abovementioned hypotheses. Nevertheless, the study shows how a thorough evaluation of distribution and abundance data aids the interpretation of genetic data with respect to population history, biogeography, and conservation biology. Identifiant : DOI : 10.2307/2656602 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=131399 Lutz, Eva, Schneller, Johann Jakob (1942-), Holderegger, Rolf (1965-) 2000 Understanding population history for conservation purposes: population genetics of Saxifraga Aizoides (saxifragaceae) in the lowlands and lower mountains North of the Alps. American Journal of Botany, 87(4) : 583-590.Documents numériques
Article (2000)URL
