Bartolomeo Schirone

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Combining molecular analyses with geological and palaeontological data may reveal timing and modes for the divergence of lineages within species. The Mediterranean Basin is particularly appropriate for this kind of multidisciplinary studies, because of its complex geological history and biological diversity. Here, we investigated chloroplast DNA of Quercus(More)
DAF, Università degli Studi della Tuscia, Viterbo, Italy, DendroLab, Department of Geography, University of Nevada, Reno, NV, USA, Department of Wood Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia, Departamento de Geografı́a y Ordenación del Territorio, Universidad de Zaragoza, Zaragoza, Spain, University of(More)
Nuclear ribosomal DNA sequences encoding the 5.8S RNA and the flanking internal transcribed spacers (ITS1 and ITS2) were used to test the phylogenetic relationships within 12 Italian Quercus taxa (Fagaceae). Hypotheses of sequence orthology are tested by detailed inspection of some basic features of oak ITS sequences (i.e., general patterns of conserved(More)
DNA barcoding may be particularly important in influencing ecology, economic issues, and the fundamental crisis facing biodiversity as a standardized, species-level identification tool for taxonomy assessment. Trees play important roles in the conservation of many land ecosystems, the wood trade, and the definition of biogeographical processes;(More)
Climatic signals in beech tree-ring width series from Central Italy have been studied over different periods of time. Prewhitened tree-ring chronologies respond mainly to summer precipitation and they do not correlate in a significant manner with the winter North Atlantic oscillation (NAO) index. In this high-frequency pattern the NAO signs are only found(More)
Taxus baccata L., a Tertiary relict formerly widespread in the Azores Archipelago, was recently classified as “probably extinct”. This paper documents the persistence of the species in the Azores and provides its first characterization by means of morphometric and genetic analyses. Only five individuals were found, growing on Pico Island. Although the(More)
The ecological behaviors of a network of pure evergreen oak stands (Quercus suber L. and Quercus ilex L.) in the Central-Western Mediterranean Basin were investigated toward climatic and edaphic factors implemented with the application of topographic wetness index (TWI). A Categorical Principal Component Analysis (Catpca) using climatic and soil(More)
DNA barcoding may be particularly important in impacting the current trends of world’s biodiversity crisis, public economic issues and science. Forests play a crucial role in self-sustaining natural ecosystems and human environment at both local and regional scales. Over 39% of the world’s forests are formed by conifers; most species are highly exposed to(More)
The Azores provide an excellent field test for research activities aimed at developing conservation strategies for endangered tree species. In this work, the urgency to promote Picconia azorica conservation programs addressed (a) insights into the biotaxonomy of the species (including an evaluation of its origin and relationships with the only congeneric(More)
Understanding the ecological mechanisms that allow a species to transition from an occasional understory component to the dominant type in the forest canopy is essential for predicting future shifts in the distribution of species. We investigated this issue with regard to yew, also because mature yew trees have been reported to inhibit self-regeneration and(More)