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Auteur Francisco Amich |
Documents disponibles écrits par cet auteur (2)
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la rechercheEffects of local abundance on pollination and reproduction in Delphinium fissum subsp. sordidum (Ranunculaceae) / Rubén RamÃrez-RodrÃguez in Botany letters, vol. 164, n°4 (Année 2017)
Titre : Effects of local abundance on pollination and reproduction in Delphinium fissum subsp. sordidum (Ranunculaceae) Type de document : texte imprimé Auteurs : Rubén RamÃrez-RodrÃguez, Auteur ; Francisco Amich, Auteur Année de publication : 2017 Article en page(s) : pp. 371-383 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Ranunculaceae Mots-clés : Delphinieae graine pollinisation conservation Résumé : "Delphinium fissum subsp. sordidum (Ranunculaceae) is an endangered, xenogamous, self-compatible hemicryptophyte endemic of the central-western Iberian Peninsula, with a disjunct distribution in the Sierra Mágina (Spain: Jaén Province). We studied the effects of local abundance, in terms of plot size (number of individuals) and plot purity (relative abundance), assessing the activity of pollinators (frequency of visits and behaviour of visitors), quantity and quality of pollinator services and seed set in two populations. Flowers of D. fissum subsp. sordidum were visited by Hymenoptera (88.8%), Lepidoptera (10.3%) and Diptera (0.9%). The most frequent pollinator was Bombus terrestris (72.6% of total visits). Differences in relative frequency of visits to plants were observed between populations. Plots with high numbers of individuals attracted more pollinators. The same pattern was observed for stigmatic pollen loads and seed set; 99.46% of pollen grains deposited on the stigmas were conspecific, and the main competitor was Ferula communis. The effects of purity were assessed by comparing pure plots with a mixed plot that included plants that coincide with the flowering stage of D. fissum subsp. sordidum and exert an effect of interspecific competition. These results may be useful for developing conservation measures, especially in the small population of Aldeadávila." (source : auteurs) Type de publication : périodique Référence biblio : RamÃrez-RodrÃguez R., Amich F., 2017 - Effects of local abundance on pollination and reproduction in Delphinium fissum subsp. sordidum (Ranunculaceae). Botany letters, 164 (4) : 371-383. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=67290
in Botany letters > vol. 164, n°4 (Année 2017) . - pp. 371-383[article]Exemplaires(1)
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Titre : Morpho-environmental characterization of the genus Dianthus L. in the Iberian Peninsula: environmental trends for D. pungens group under climate change scenarios Type de document : texte imprimé Auteurs : João Rocha, Auteur ; Paulo Almeida, Auteur ; Isabel Garcia-Cabral, Auteur ; Maxim Jaffe, Auteur ; Rubén Ramïrez-Rodrïguez, Auteur ; Francisco Amich, Auteur ; Antonio L. CrespÃ, Auteur Année de publication : 2017 Article en page(s) : pp. 209-227 Langues : Anglais (eng) Mots-clés : biogéographie  holo-pleistocene  climate change  modelling  resilience  Dianthus  Spain  Portugal Résumé : "Potential habitat characterizations for past (Late Glacial Maximum), present and future scenarios were calculated for Iberian species of D. pungens gr. (D. pungens subsp. pungens, D. pungens subsp. langeanus, D. pungens subsp. gredensis, D. pungens subsp. brachyanthus and D. pungens subsp. hispanicus). Results were discussed according to Allison’s interpretation of insurance theory, where diversity is contrasted with resilient behaviours. Resilience is here defined as the diversification of responses to assure that functionality. The discussion of results was also compared with the morphological characterization. Environmental results confirmed the morphological similarity between these taxa. An apparent geographic divergence was observed: D. pungens subsp. hispanicus and D. pungens subsp. pungens supported an eastern response, while D. pungens subsp. langeanus and D. pungens subsp. gredensis supported a western response. The intermediate response for those extremes was supported by D. pungens subsp. brachyanthus. Based on these results, resilience in this genetic pool is concentrated on D. pungens subsp. gredensis and D. pungens subsp. hispanicus, while D. pungens subsp. langeanus, D. pungens subsp. brachyanthus and D. pungens subsp. pungens showed their resilience strategies to guarantee responses along the eastern, northern and western mountain systems for current environmental conditions only." Type de publication : périodique Référence biblio : Rocha J., Almeida P., Garcia-Cabral I., Jaffe M., Ramïrez-Rodrïguez R., Amich F., Crespà A., 2017 - Morpho-environmental characterization of the genus Dianthus L. in the Iberian Peninsula: environmental trends for D. pungens group under climate change scenarios. Botany letters, 164 (3) : 209-227. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66267
in Botany letters > vol. 164, n°3 (Année 2017) . - pp. 209-227[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Exclu du prêt
