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Ajouter le résultat dans votre panierA preliminary assessment of the conservation status of Cypripedium species in the wild / Phillip Cribb in Botanical journal of the Linnean Society, 126 (1-2) (1998)
Titre : A preliminary assessment of the conservation status of Cypripedium species in the wild Type de document : Imprimé Auteurs : Phillip Cribb ; Marianne Syrylak Sandison Année de publication : 1998 Article en page(s) : 183-190 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Conservation et gestion des espèces Mots-clés : Cypripedium calceolus L. Résumé : The conservation of few plants produces such an emotive response as that of hardy slipper orchids of the genus Cypripedium. The genus, comprising 45 species and two varieties, is holarctic in distribution with the centre of diversity in China. Much is known about the status of some species and their populations in Europe and North America, but little information is available on the Asiatic and Mexican species. Most cypripediums are showy orchids and are well represented in herbaria, allowing an estimate of the present distribution, frequency and conservation status of the known species to be made. The authors conclude that having considered the number of herbarium specimens, nearly half of the genus may be considered threatened and in need of some legal protection if the plants are to survive in the wild. They identify a need to examine the conservation status of the taxa in in this genus more closely, and outline two important conservation tools that may help efforts to this end: the IUCN Red List Categories and Criteria for the Amendment of the Appendices of CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora). Lien pérenne : DOI : 10.1111/j.1095-8339.1998.tb02525.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137375
in Botanical journal of the Linnean Society > 126 (1-2) (1998) . - 183-190Cribb, Phillip, Sandison, Marianne Syrylak 1998 A preliminary assessment of the conservation status of Cypripedium species in the wild. Botanical journal of the Linnean Society, 126(1-2): 183-190.Documents numériques
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Article (1998)URL
Titre : Fruit-set and recruitment in populations of Cypripedium calceolus L. in Estonia Type de document : Imprimé Auteurs : Tiiu Kull Année de publication : 1998 Article en page(s) : 27-38 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Biologie de la reproduction Mots-clés : Cypripedium calceolus L. Résumé : The overall mean percentage of fruiting for over 3500 flowers observed in eight Estonian populations of a self-compatible clonal orchid Cypripedium calceolus over 11 years was 10.5%. The larger clones set relatively fewer fruits, otherwise the general pattern of fruiting was close to random, despite several significant local deviations from random pollination. There is no cost associated with the fruit-set at the clonal level. The fruit-set which appears pollinator limited was not correlated with the frequency of seedlings in a population. Data presented provide information on the relationship between fruit and seedling production in orchids. The sites suitable for seedling establishment are characterized as having relatively more extensive moss cover, less vascular plant cover, more moisture and better light conditions. Recruitment is concluded to be microsite limited, and the fruit-set to be without significant influence on the fitness of populations. Lien pérenne : DOI : 10.1111/j.1095-8339.1998.tb02513.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137376
in Botanical journal of the Linnean Society > 126 (1-2) (1998) . - 27-38Kull, Tiiu 1998 Fruit-set and recruitment in populations of Cypripedium calceolus L. in Estonia. Botanical journal of the Linnean Society, 126(1-2): 27-38.Documents numériques
Article (1998)URL
