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Patterns of endemism along an elevation gradient in Sierre Nevada (Spain) and Lefka Ori (Crete, Greece) / Maria Rosa Fernàndez-Calzado in Pirineos : revista de ecología de montaña, vol. 168 (Année 2013)

Public [article]  inPirineos : revista de ecología de montaña > vol. 168 (Année 2013) . - pp. 7-24 Titre : Patterns of endemism along an elevation gradient in Sierre Nevada (Spain) and Lefka Ori (Crete, Greece) Type de document : texte imprimé Auteurs : Maria Rosa Fernàndez-Calzado, Auteur ; D. Ghosn ; M. Gottfried, Auteur ; G. Kazakis, Auteur ; Joaquín Molero Mesa, Auteur ; H. Pauli, Auteur ; A. Merzouki, Auteur Année de publication : 2013 Article en page(s) : pp. 7-24 Langues : Anglais (eng) Catégories : [ZG] Espagne [ZG] Grèce [Thèmes] Bassin méditerranéen [Thèmes] Flore vasculaire (phanérogames et cryptogames vasculaires) Mots-clés : endémisme  richesse en espèces  montagne  île  programme GLORIA  changement climatique Résumé : "Aim: High mountains in the Mediterranean region of Europe areparticularly rich in endemic vascular plants. We aimed to compare the altitudinalpatterns of vascular plant species richness and the proportion of endemic species intwo Mediterranean region: Lefka Ori on the island of Crete (Greece) and SierraNevada on the Iberian peninsula. Location: Sierra Nevada, Granada (Spain); Lefka Ori, Crete (Greece). Methods: Data from standardised permanent plots settings on summit sites (comprising eight plot sectors, covering the upeermost 10 altitudinal metres) of different elevations were used (GLORIA Multi-Summit approach; www.gloria.ac.at). Species numbers, rates of endemic species, and soils temperature were compared by means of ANCOV A and linear regression. Results: The two regions, though climatically similar, showed strikingly different patterns: In Sierra Nevada, the proportion of endemic vascular plants (species restricted to Sierra Nevada) showed a stepwise increase from the lowest to the highest summit. In contrast, the proportion of endemic species restricted to Crete was not significantly different between the four summits in Lefka Ori. In both regions the observed trends were largely consistent with the altitudinal distribution of the endemic species obtained from standard floras. Main conclusions: The geographic positions of the two regions, i.e. island versus mainland and the higher elevation of Sierra Nevada are suggested to be the primary causes of the observed differences. The high degree of endemism in the cold environments of Mediterranean mountains’ upper bioclimatic zones indicates a pronounced vulnerability to the impacts of climate change. A continued and intensified species monitoring in the mountains around the Mediterranean basin, therefore, should be considered as a priority research task." (source : auteurs) Type de publication : périodique Référence biblio : Fernàndez-Calzado M., Ghosn D., Gottfried M., Kazakis G., Molero Mesa J., Pauli H., Merzouki A., 2013 - Patterns of endemism along an elevation gradient in Sierre Nevada (Spain) and Lefka Ori (Crete, Greece). Pirineos : revista de ecología de montaña, 168 : 7-24. ID PMB : 56367 DOI : 10.3989/Pirineos.2013.168001 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=56367 [article]

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