1,721,350 research outputs found
Arricchimento semantico del turismo alpino
No full textLa capacità di tradurre concettualmente una ricerca utente in una query verso una banca dati è uno dei benefici chiave del Geospatial Web. L’arricchimento concettuale del web semantico influenza anche le applicazioni turistiche, soprattutto quelle in ambiente alpino. L’utente, in misura sempre maggiore, diviene parte stessa del sistema sentieristico. Sempre meno ha bisogno di interpretare cognitivamente i risultati visualizzati su di una mappa. I percorsi sono valorizzati sia per l’enfasi geografica attraverso i broad boundaries sia nella loro sicurezza intrinseca, in particolare rispetto al rischio valanghe
Spatial phylogenetic diversity of pteridophytes in Latium (Central Italy): a tool for conservation planning at regional scale
No full textThe spatial phylogenetic metrics of pteridophyte diversity and endemism may provide use ful information to prioritize protected areas for conservation planning. We analysed spatial
patterns of phylogenetic diversity (PD) and phylogenetic endemism (PE) of native pterido phytes across Latium, to recognise diversity and endemism centres. and to discuss impli cations for conservation in the region. We identified the main PD and PE centres that
should be considered as valuable biodiversity hotspots, due to their high evolutionary and
conservation value. Most, but not all of them correspond to protected areas Monitoring programmes of the rarest taxa are proposed
Indagini sulla paleodieta in due necropoli abruzzesi dell’età del Ferro: Alfedena e Bazzano (L’Aquila).
No full textL’uretere retrocavale associato ad anomalia della giunzione uretero vescicale: case report
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Biodiversity of urban street trees in Italian cities: a comparative analysis
No full textStreet trees are key elements in urban ecosystems from several points of view, and different species can have different functions (i.e., ecological, socio-economic). As such, a careful biodiversity assessment is pivotal. We evaluated urban street trees in 15 Italian cities along a geographical and bioclimatic gradient. The data was obtained from scientific literature and Garden Service Offices of the cities. The distribution patterns of the species were analyzed in terms of taxonomy, chorology, and tree size. We registered 277 tree species belonging to 48 families. The species richness is very variable in analyzed cities, and it is not directly correlated with the city’s size. Only three species (Platanus×hispanica, Celtis australis and Quercus ilex) are common to almost all cities, while 41.52% of the species are present only in one city. The comparative analysis of species, considering the floristic and city distribution, showed different results, highlighting Pinaceae as the most common family. The chorological analysis shows a predominance of exotic species and a good relationship with the bioclimatic conditions of cities. A selection of the species, as street trees to maximize their ecological and socio-economic functions, is pivotal in urban landscaping and green management
Wind-driven rain as a bioclimatic factor affecting the biological colonization at the archaeological site of Pompeii, Italy
No full textThe weathering role of Wind-Driven Rain (WDR) on buildings is widely recognised from a physical point of view, but the influence of WDR on Biological Growth (BG) on stone materials to cause biodeterioration is still not well studied. Following our previous results from the Roman area, the UNESCO site of Pompeii for its importance was selected to further test relationships between WDR and BG. We collated and analysed climatic data (rainfall, direction and intensity of winds) between 2010 and 2015 to delineate the thermo-pluvial diagram and extrapolate Dominant Winds (DW) and WDR. Data on BG, consisting mainly of cyanobacteria, algae and lichens, were also collected through sampling, direct observations and analysis of high-quality photos. The climatic elaborations highlighted a dominance of the West wind influencing WDR. The BG was more prominent on the northern and western exposures, while it was considerably less extensive on the southern walls. Our results also showed that water from WDR, together with the lower temperature in the northern exposure and poor ventilation, can all affect wetness and had a profound role in the promotion of BG. Our analyses suggest that the protection of building walls should be different according to the exposure conditions in the formulation of preventive strategies for conservation
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