Portail documentaire

Conservatoire botanique national des Pyrénées et de Midi-Pyrénées

Little hope for the polyploid endemic Pyrenean Larkspur (Delphinium montanum): Evidences from population genomics and Ecological Niche Modeling / Pascaline Salvado in Ecology and evolution, 12 (2022) 

Public Citation [article]  inEcology and evolution > 12 (2022) . - 1-13 Titre : Little hope for the polyploid endemic Pyrenean Larkspur (Delphinium montanum): Evidences from population genomics and Ecological Niche Modeling Type de document : Imprimé Auteurs : Pascaline Salvado ; Pere Aymerich Boixader ; Josep Parera ; Albert Vila Bonfill ; Maria Martin ; Céline Quélénnec ; Jean Marc Lewin ; Valérie Delorme-Hinoux ; Joris A. M. Bertrand Année de publication : 2022 Article en page(s) : 1-13 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Généralités en systématique, génétique et amélioration des plantes Résumé : Species endemic to restricted geographical ranges represent a particular conservation issue, be it for their heritage interest. In a context of global change, this is particularly the case for plants which belong to high-mountain ecosystems and, because of their ecological requirements, are doomed to survive or disappear on their “sky islands”. The Pyrenean Larkspur (Delphinium montanum, Ranunculaceae) is endemic to the Eastern part of the Pyrenees (France and Spain). It is now only observable at a dozen of localities and some populations show signs of decline, such as a recurrent lack of flowering. Implementing population genomics approach (e.g., RAD-seq like) is particularly useful to understand genomic patterns of diversity and differentiation in order to provide recommendations in term of conservation. However, it remains challenging for species such as D. montanum that are autotetraploid with a large genome size (1C-value >10 pg) as most methods currently available were developed for diploid species. A Bayesian framework able to call genotypes with uncertainty allowed us to assess genetic diversity and population structure in this system. Our results show evidence for inbreeding (mean GIS = 0.361) within all the populations and substantial population structure (mean GST = 0.403) at the metapopulation level. In addition to a lack of connectivity between populations, spatial projections of Ecological Niche Modeling (ENM) analyses under different climatic scenarios predict a dramatic decrease of suitable habitat for D. montanum in the future. Based on these results, we discuss the relevance and feasibility of different conservation measures. Identifiant : DOI : 10.1002/ece3.8711 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147439 Salvado, P., Boixader, P.A., Parera, J., Bonfill, A.V., Martin, M., Quélénnec, C., Lewin, J.M., Delorme-Hinoux, V., Bertrand, J.A.M., 2022 . Little hope for the polyploid endemic Pyrenean Larkspur (Delphinium montanum): Evidences from population genomics and Ecological Niche Modeling. Ecology and evolution, 12: 1-13.

Documents numériques

Article (2022) URL

Species distribution modelling predicts the extinction of the east-pyrenean local endemic form of Pedicularis comosa: P. c. asparagoides in a near future / Pascaline Salvado in Vie et milieu, 75 (1) (2025) 

Public Citation [article]  inVie et milieu > 75 (1) (2025) . - 1-18 Titre : Species distribution modelling predicts the extinction of the east-pyrenean local endemic form of Pedicularis comosa: P. c. asparagoides in a near future Type de document : Imprimé Auteurs : Pascaline Salvado ; Noémie Collette ; Anaïs Gibert ; Maria Martin ; Céline Quélénnec ; Jean Marc Lewin ; Joseph Garrigue ; Jean-André Magdalou ; Christophe Hurson ; Diane Sorel ; Valérie Delorme-Hinoux ; Joris A. M. Bertrand Année de publication : 2025 Article en page(s) : 1-18 Catégories : [CBNPMP-Thématique] Changement climatique [CBNPMP-Thématique] Flore [CBNPMP-Thématique] Biodiversité [CBNPMP-Géographique] Pyrénées Mots-clés : Pedicularis comosa Résumé : Anthropogenic climate change is rapidly driving species towards extinction, especially in vulnerable habitats like mountain regions such as the Pyrenees. With each degree of temperature rise, the threat accelerates, endangering diverse plant species. Due to their patrimonial importance and the susceptibility of mountainous species to climate and land-use changes, the conservation of endemic species in the Pyrenees is a crucial issue. Local populations of Pedicularis comosa in the Eastern Pyrenees provide an interesting biological model for studying climate change effects on mountain plant biodiversity. Here, an endemic pink-flowered morphotype described as Pedicularis comosa subsp. asparagoides coexist with the widely distributed, yellow-flowered Pedicularis comosa subsp. comosa. Because of its local-endemism, P. c. subsp. asparagoides is threatened as it is known to occur sporadically from a restricted number of sites in the Albères, the Salines Massif and the Canigó Massif. Our study highlights that climate change is a serious threat to P.c. subsp. asparagoides. Using Ecological Niche Modelling (ENM), we found that its current habitat could become unsuitable within less than two decades, outpacing the species' natural dispersal ability to newly suitable areas. Therefore, our findings suggest that conservation measures, such as assisted migration, are necessary to protect this unique morphotype. Identifiant : HAL : hal-05532951v1 / DOI : 10.57890/7x9tgm19 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=156466 Salvado, P., Collette, N., Gibert, A., Martin, M., Quélénnec, C., Lewin, J.M., Garrigue, J., Magdalou, J.A., Hurson, C., Sorel, D., Delorme-Hinoux, V., Bertrand, J.A.M., 2025 . Species distribution modelling predicts the extinction of the east-pyrenean local endemic form of Pedicularis comosa: P. c. asparagoides in a near future. Vie et milieu, 75(1): 1-18.

Documents numériques

Article (2025) URL