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Auteur Cristina Roquet |
Documents disponibles écrits par cet auteur (3)
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Discovery of cryptic plant diversity on the rooftops of the Alps / Florian C. Boucher in Scientific reports, 11 (2021)
[article]
Titre : Discovery of cryptic plant diversity on the rooftops of the Alps Type de document : Imprimé Auteurs : Florian C. Boucher ; Cédric Dentant (1976-) ; Sébastien Ibanez ; Thibaut Capblancq ; Martí Boleda ; Louise Boulangeat ; Jan Smyčka ; Cristina Roquet ; Sébastien Lavergne (1976-) Année de publication : 2021 Article en page(s) : 1-10 Langues : Anglais (eng) Catégories : [CBNPMP-Géographique] Alpes
[CBNPMP-Thèmes] Chorologie, endémisme, cartographie d'espèce, atlas, catalogue, centre dispersion, région florale, migration
[CBNPMP-Thèmes] Diversité génétique
[CBNPMP-Thèmes] Groupement relictuelRésumé : High elevation temperate mountains have long been considered species poor owing to high extinction or low speciation rates during the Pleistocene. We performed a phylogenetic and population genomic investigation of an emblematic high-elevation plant clade (Androsace sect. Aretia, 31 currently recognized species), based on plant surveys conducted during alpinism expeditions. We inferred that this clade originated in the Miocene and continued diversifying through Pleistocene glaciations, and discovered three novel species of Androsace dwelling on different bedrock types on the rooftops of the Alps. This highlights that temperate high mountains have been cradles of plant diversity even during the Pleistocene, with in-situ speciation driven by the combined action of geography and geology. Our findings have an unexpected historical relevance: H.-B. de Saussure likely observed one of these species during his 1788 expedition to the Mont Blanc and we describe it here, over two hundred years after its first sighting. Lien pérenne : DOI : 10.1038/s41598-021-90612-w / HAL : hal-03246552 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147509
in Scientific reports > 11 (2021) . - 1-10Boucher, FC., Dentant, C., Ibanez, S., Capblancq, T., Boleda, M., Boulangeat, L., Smyčka, J., Roquet, C., Lavergne, S. 2021. Discovery of cryptic plant diversity on the rooftops of the Alps. Scientific reports, 11: 1-10.Documents numériques
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Article (2021)URL Habitats hold an evolutionary signal of past climatic refugia / María Begoña García in Biodiversity and conservation, 31 (2022)
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Titre : Habitats hold an evolutionary signal of past climatic refugia Type de document : Imprimé Auteurs : María Begoña García ; Hector Miranda ; Manuel Pizarro ; Xavier Font i Castell ; Cristina Roquet ; Penélope González-Sampériz Année de publication : 2022 Article en page(s) : 1665-1688 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Endémisme
[CBNPMP-Thèmes] Habitats
[CBNPMP-Thèmes] Phylogénie (liens existant entre espèces apparentées)
[CBNPMP-Thèmes] Forêts (habitat)Résumé : Climatic refugia have often been associated with hotspots of richness and endemism, and identified on the basis of molecular or paleobotanical information. Here, we apply a phylogenetic analysis to 18,000 plant communities distributed across the Pyrenees, a south European mountain range, to identify climatic refugia from imprints of relictuality inferred from species’ evolutionary distinctiveness (ED). We produced a genus-level phylogenetic tree to calculate the standardized mean ED value of plant communities (cED). Then, we explored which habitats concentrate the plant communities with the highest cED and the interrelated effect of past (long-term climatic stability) and present (topographic and spatial position) factors. Results show strong differences of cED among habitats: forests ranked first, followed by some open habitats like high altitude wetlands. Climate stability and roughness positively influenced cED. A weak negative association resulted between the two diversity measurements (richness and endemism rate) and also with cED. We propose that forests acted as “mobile refugia” during the glacial-interglacial periods, supported by paleoenvironmental reconstructions revealing continuous presence at regional scale of key broad-leaved trees at that time. Azonal habitats like the endemic-poor humid communities at high elevation would have also played an important role as more permanent microrefugia. Our approach identifies a variety of habitats and plant assemblages that have successfully withstood past climate change in different ways, and therefore would hold an important evolutionary potential to cope with current climate change. Given their potential role in preserving biodiversity, they should be integrated in future conservation agendas. Lien pérenne : DOI : 10.1007/s10531-022-02419-4 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148886
in Biodiversity and conservation > 31 (2022) . - 1665-1688García, M.B., Miranda, H., Pizarro, M., Font i Castell, X., Roquet, C., González-Sampériz, P. 2022. Habitats hold an evolutionary signal of past climatic refugia. Biodiversity and conservation, 31: 1665-1688.Documents numériques
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Article (2022)URL Phylogeny and species delimitation of Campanula Sect. Heterophylla (Campanulaceae) in the Pyrenean‑Cantabrian Mountains, with a focus on the endemic C. jaubertiana / Cristina Roquet (2020)
Titre : Phylogeny and species delimitation of Campanula Sect. Heterophylla (Campanulaceae) in the Pyrenean‑Cantabrian Mountains, with a focus on the endemic C. jaubertiana Type de document : Extrait d'ouvrage Auteurs : Cristina Roquet ; Jan Smyčka ; Clara Pladevall ; Benjamin Komac (1980-) ; Llorenç Sáez Année de publication : 2020 Importance : 49 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Phylogénie (liens existant entre espèces apparentées)
[CBNPMP-Géographique] PyrénéesMots-clés : Campanula sect. Heterophylla Campanula Jaubertiana Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=146915 Roquet, C., Smyčka, J., Pladevall, C., Komac, B., Sáez, L. 2020. Phylogeny and species delimitation of Campanula Sect. Heterophylla (Campanulaceae) in the Pyrenean‑Cantabrian Mountains, with a focus on the endemic C. jaubertiana. In: Actes del XII Col·loqui Internacional de Botànica Pirenaica ‑ Cantàbrica. : 49.