A phyto-climatic transect in the Alpes Maritimes used to characterize the northern limit of the Mediterranean biogeographical area
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30 septembre 2020
- ISIDORE Id: 10670/1.8b852b...
- hal: hal-03033226
- doi: 10.31396/Biodiv.Jour.2020.11.3.679-688
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info:eu-repo/semantics/altIdentifier/doi/10.31396/Biodiv.Jour.2020.11.3.679-688
info:eu-repo/semantics/OpenAccess
Mots-clés
Phyto-climatic transect Biogeography Mediterranean Hotspot Biogeographical areas -bio]/Ecology, environment/Ecosystems -bio]/Vegetal Biology/BotanicsSujets proches
Speciation (Biology) Natural science Sciences Science of science Vegetable kingdom Plantae Plant kingdom Vegetation Wildlife Flora Alpen Alpi Alpe Alpes Methods of analysis Analysis and chemistry Analytical methods Chemical analysis Analysis methods Analysis and examination planteCiter ce document
Julien Andrieu et al., « A phyto-climatic transect in the Alpes Maritimes used to characterize the northern limit of the Mediterranean biogeographical area », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.31396/Biodiv.Jour.2020.11.3.679-688
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Résumé
This paper aims, with a botanical transect, to contribute to define the boundary between the Mediterranean biogeographical area and the flora of the Alpine domain. The transect, realized in 2018, is located in the Maritimes Alps, in the Roya Valley at the northernmost limit of the Mediterranean in contact with a mountain ecoregion. Our objective was to get as close as possible to the integral flora (Tracheophytes), that counts a corpus of 529 species. A 40 km long transect divided in 150 sampling sites led to 7333 observations of presence, analyzed by Factorial Composant Analysis (FCA) and frequency analysis. Statistics revealed a significant distinction of two floras with a clear spatial boundary not crossed by 76% of the species. The Transect revealed a clear biogeographic limit of biogeographical area, which seems to converge well with the limit of the Mediterranean Hotspot as defined by Myers (2000).
