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Plant Biosystems This article was downloaded by: [T&F Internal Users], [Susan Cullen] On: 27 May 2014, At: 11:33 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology: Official Journal of the Societa Botanica Italiana Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/tplb20 The endemic vascular flora of Peloritani Mountains (NE Sicily): Plant functional traits and phytogeographical relationships in the most isolated and fragmentary micro-plate of the Alpine orogeny S. Sciandrelloa, R. Guarinob, P. Minissalea & G. Spampinatoc a Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, I-95125 Catania, Italy b Botanical Unit, Department of STEBICEF, University of Palermo, Via Archirafi 38, 90123 Palermo, Italy c Department of STAFA, University of Reggio Calabria, Loc. Feo di Vito, I-89100 Reggio Calabria, Italy Accepted author version posted online: 24 Apr 2014.Published online: 22 May 2014. To cite this article: S. Sciandrello, R. Guarino, P. Minissale & G. Spampinato (2014): The endemic vascular flora of Peloritani Mountains (NE Sicily): Plant functional traits and phytogeographical relationships in the most isolated and fragmentary micro- plate of the Alpine orogeny, Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology: Official Journal of the Societa Botanica Italiana, DOI: 10.1080/11263504.2014.908978 To link to this article: http://dx.doi.org/10.1080/11263504.2014.908978 PLEASE SCROLL DOWN FOR ARTICLE Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. 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Terms & Conditions of access and use can be found at http:// www.tandfonline.com/page/terms-and-conditions Plant Biosystems, 2014 http://dx.doi.org/10.1080/11263504.2014.908978 The endemic vascular flora of Peloritani Mountains (NE Sicily): Plant functional traits and phytogeographical relationships in the most isolated and fragmentary micro-plate of the Alpine orogeny S. SCIANDRELLO1, R. GUARINO2, P. MINISSALE1, & G. SPAMPINATO3 1Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, I-95125 Catania, Italy; 2Botanical Unit, Department of STEBICEF, University of Palermo, Via Archirafi 38, 90123 Palermo, Italy and 3Department of STAFA, University of Reggio Calabria, Loc. Feo di Vito, I-89100 Reggio Calabria, Italy Abstract This study is aimed at (1) producing a complete and updated inventory of the endemic vascular flora of Peloritani Mountains, (2) defining the geographical limits of Peloritani, regarded here as a biogeographical district and (3) highlighting possible paleogeographic connections with other Mediterranean lands. The heterogeneity analysis of the endemic flora was performed by means of contingency tables, through the x 2 test. The endemic flora of this area consists of 129 specific and infraspecific taxa, of which 15 are restricted to the Peloritani Mountains. The analysis of habitats revealed that endemic taxa are most abundant on cliffs, rangelands, woods and garrigues. A large number of surveyed taxa are endemic to central-southern Italy and Sicily, while the number of endemic taxa in common with Calabria, Etna and Aeolian Islands turned out to be rather low, in spite of the geographical proximity. The endemic flora of Peloritani allows to emphasize palaeogeographical relationships not only with the neighbouring Mediterranean territories, but also with currently remote ones, such as southern Spain, Sardinia and Corsica. The phytogeographical framework substantiates the hypothesis that the Peloritani floristic district coincides with the limit given to Peloritani Mountains by structural geologists. Keywords: Endemic flora, Calabrian-Peloritani Orogen, Mediterranean Region, Erucastrum virgatum, Petagnaea gussonei, paleogeography Introduction et al. (2010) as one important plant area (IPA), essential for the conservation of plant biodiversity, Sicily is widely recognized as one of the main indicated as “Monti Peloritani e Rupi di Taormina biodiversity hot-spots in the Mediterranean basin (SIC24)”. In recent times, many taxonomic investi- (Heywood 1995;Me´dail & Que´zel 1997, 1999; gations have been carried out in the Peloritani area Downloaded by [T&F Internal Users], [Susan Cullen] at 11:33 27 May 2014 Myers et al. 2000; Thompson et al. 2005;Me´dail & (Brullo 1980; Brullo & Spampinato 1988; Brullo Diadema 2009; Raimondo & Spadaro 2012). In NE et al. 1997, 2009a; Cristaudo et al. 2009; Cataldo Sicily, the Peloritani Mountains represent an et al. 2012; Sciandrello et al. 2013a), but an update important, albeit neglected, centre of speciation on the floristic knowledge of the whole area is still and plants refuge. The rich flora of this territory missing, being Nicotra (1878– 1879)thelast includes rare and highly localized palaeo-endemites, contributor who published a flora on such territory. such as Colymbada tauromentana, Brassica raimondoi In more recent years, accurate floristic lists were and Limonium sibthorpianum, testifying the long and provided by Guarino (1997) and by Picone and complex paleogeographic history of this area (Arena Crisafulli (2006), although these contributions were et al. 1975; Gramuglio et al. 1985; Brullo et al. 1995; not aimed at providing a complete check-list of the Spampinato et al. 2008; Sciandrello & D’Agostino flora of Peloritani Mountains. Additional works 2014; Sciandrello et al. 2013a). Recently, for this including floristic contributions on smaller, but reason, the area at issue has been identified by Blasi significant, areas of Peloritani were published Correspondence: S. Sciandrello, Dipartimento di Scienze Biologiche Geologiche e Ambientali Sez. Biologia vegetale, Universita` di Catania, Via A. Longo 19, I-95125 Catania, Italy. Email: [email protected] q 2014 Societa` Botanica Italiana 2 S. Sciandrello et al. (Gramuglio et al. 1959, 1978; Minissale et al. 2007), River and from the Nebrodian one by the two while Picone et al. (2003) focused on the most streams named Timeto and Roccella, the latter being endangered species of the area at issue. a tributary of Alcantara (Picone et al. 2003). This This study aims at (1) producing a complete and phytogeographical delimitation of Peloritani Moun- updated inventory of the vascular endemic flora of tains is essentially based on geographical criteria, but the Peloritani Mountains, in the light of the most it is here esteemed more appropriate to delimit the recent taxonomic novelties mentioned above; (2) district on the basis of the geological units which are comparing the endemic flora of Peloritani with that part of Calabria-Peloritani Orogen (Angı` et al. of Sicily and Hyblaean district; (3) better defining the 2010). This delimitation is notably supported by geographical limits of Peloritani, regarded here as a the occurrence and distribution pattern of some biogeographical district and (4) highlighting possible significant floristic elements that will be mentioned paleogeographic connections with other Mediterra- and commented later in the text. So, the area of the nean lands. Besides, a complete and updated present study included the portion of Sicily located inventory of the endemic flora occurring in the north of the tectonic line of Taormina, which from Peloritani territory is provided, with the hope that this locality stretches across the mountains up to the this should be a starting point for further researches Tyrrhenian Sea just to the south of Capo d’Orlando and conservation projects on the flora of Peloritani. (Figure 1). This setting agrees with the ecological classification of Italy ecoregions (Blasi & Frondoni 2011), where Peloritani Mountains are a section of Material and methods the Calabria-Peloritani Arc Province, thereby recog- nizing a higher affinity of this territory to the Calabria Study area rather than to the same Sicily. According to Brullo et al. (1995), the Peloritani The geological history of Peloritani Mountains district belongs to the NE Sicilian biogeographical dates back to the Alpine Orogen (Figure 2). In subsector, together with Mt. Etna and the main particular, together with the Aspromonte, Serre and elevations of the island, aligned along the so-called Sila Massif (Calabria), they represent a patch of
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