http://http://dspace.unitus.it:80 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. Wed, 19 Jun 2013 22:31:35 GMT 2013-06-19T22:31:35Z http://hdl.handle.net/2067/2098 Title: Spazializzazione di dati climatici a livello nazionale tramite modelli regressivi localizzati Authors: Blasi, Carlo; Chirici, Gherardo; Corona, Piermaria; Marchetti, Marco; Maselli, Fabio; Puletti, Nicola Abstract: The availability of spatialised climatic data is an essential pre-requisite for the implementation of GIS-based analysis in many application fields. Among the different methodologies for the spatialization of climatic data collected in weather-stations the most used are those based on geostatistical approaches, on parametric correlative models or on neural networks. Within the “Completamento delle Conoscenze Naturalistiche di Base” project, funded by the Italian Ministry for the Environment (Department of Nature Protection) a database of 403 weather-stations distributed across Italy with a time series of thirty years was collected. Data of mean monthly temperature (minimum and maximum) and rainfalls were spatialized by a local linear univariate regressive method based on elevation as independent variable. A total of 36 monthly maps with a geometric resolution of 250 m was generated. The present paper introduces the adopted methodology and the accuracy results estimated by leave-one-out cross validation. Description: L'articolo è disponibile sul sito dell'editore www.sisef.it Sun, 31 Dec 2006 23:00:00 GMT http://hdl.handle.net/2067/2098 2006-12-31T23:00:00Z http://hdl.handle.net/2067/1500 Title: La vegetazione forestale dei Monti Alburni, nel Parco Nazionale del Cilento e Vallo di Diano (Campania): analisi fitosociologica e significato fitogeografico Authors: Rosati, Leonardo; Filibeck, Goffredo; De Lorenzis, Alessia; Lattanzi, Eleonora; Surbera, Francesca; Fascetti, Simonetta; Blasi, Carlo Abstract: Viene presentato lo studio fitosociologico della vegetazione forestale dei Monti Alburni nel Parco Nazionale del Cilento e viene discusso il significato fitogeografico della composizione floristica delle comunità rilevate. Thu, 31 Dec 2009 23:00:00 GMT http://hdl.handle.net/2067/1500 2009-12-31T23:00:00Z http://hdl.handle.net/2067/1788 Title: Classification of Southern Italy Ostrya carpinifolia woods Authors: Blasi, Carlo; Filibeck, Goffredo; Rosati, Leonardo Abstract: Ostrya carpinifolia woods have been extensively studied in C-Italy, while they lack specific researches and a clear phytosociological scheme in the southern part of the country. We have analyzed original and published relevés from Campania and Calabria regions, and we have compared them with bibliographic data from central Italy. The existing southern Italian Ostrya-dominated associations are revised as for their character species and bioclimatic position. Floristic analysis underlines a set of biogeographically relevant species which differentiate these communities from their CItalian analogous. A new suballiance Festuco exaltatae-Ostryenion carpinifoliae is therefore described within Carpinion orientalis, coherently with the framework already adopted for Quercus cerris woods. The syntaxon can be subdivided into two associations. Festuco-Aceretum includes different types of mixed woods growing at low elevations, in the warm-humid maritime climate of the Campania and Calabria Thyrrenian coasts (mainly in the mesomediterranean belt). Seslerio-Aceretum obtusati is the name to be used for Ostrya-woods of the mesotemperate and supratemperate belt; a subassociation for more markedly cool and humid woods can be further differentiated (described here as galietosum laevigati). Carpinion orientalis in the Italian peninsula (i.e. not including the Alps) contains now five suballiances: Lauro-Quercenion pubescentis, describing termophilous Quercus pubescens woods; Cytiso sessilifolii-Quercenion pubescentis, referring to comparatively continental Quercus pubescens woodlands of the C-Apennines; Campanulo mediae-Ostryenion, Ostrya-woods restricted to the NW sector of the Peninsula; Laburno anagyroidis-Ostryenion, mesophilous Ostrya- and mixed-woods of the mesotemperate and supratemperate belts of the N- and C-Apennines; and Festuco exaltatae-Ostryenion, Ostrya- and mixed-woods of the oceanic mesotemperate and supratemperate belts of the S-Apennines.; Classificazione dei boschi di Ostrya carpinifolia nell’Italia meridionale. Le cenosi forestali ad Ostrya carpinifolia localizzate nell’Appennino meridionale non sono state finora oggetto di specifici studi fitosociologici, a differenze di quelle dell’Appennino centro-settentrionale. Nell’ambito del presente lavoro sono state rilevate comunità a carpino nero nella Campania meridionale; i rilievi originali sono stati comparati con tutti i dati disponibili in letteratura per gli ostrieti dell’Italia meridionale. Le associazioni fino ad ora descritte sono state revisionate sulla base della composizione floristica e delle caratteristiche bioclimatiche. Un contingente di specie di rilevante significato biogeografico differenzia queste comunità dagli ostrieti dell’Italia centrale: pertanto, si propone qui una nuova suballeanza Festuco exaltatae-Ostryenion carpinifoliae all’interno del Carpinion orientalis. Il nuovo syntaxon descrive gli ostrieti e i boschi misti con Ostrya degli orizzonti mesotemperato oceanico e supratemperato oceanico del settore tirrenico dell’Italia meridionale, oltre ad alcune formazioni extrazonali presenti nella regione bioclimatica mediterranea per compensazione edafica o topografica. All’interno di questo syntaxon vengono riconosciute due associazioni: Festuco exaltatae-Aceretum neapolitani e Seslerio autumnalis-Aceretum obtusati. Nell’ambito di quest’ultima associazione viene inoltre descritta una nuova subassociazione (galietosum laevigati) per gli ostrieti più mesofili e i boschi misti con Ostrya del Cilento. I boschi del Carpinion orientalis dell’Italia peninsulare risultano dunque suddivisi così in cinque suballeanze: Laburno-Ostryenion, Lauro-Quercenion pubescentis, Cytiso sessilifolii-Quercenion pubescentis, Campanulo mediae-Ostryenion, Festuco exaltatae-Ostryenion. Description: L'articolo è disponibile sul sito dell'editore http://www.scienzadellavegetazione.it/sisv/rivista/index.jsp Sat, 31 Dec 2005 23:00:00 GMT http://hdl.handle.net/2067/1788 2005-12-31T23:00:00Z http://hdl.handle.net/2067/2111 Title: Monitoring and assessing old-growth forest stands by plot sampling Authors: Corona, Piermaria; Blasi, Carlo; Chirici, Gherardo; Facioni, Laura; Fattorini, Lorenzo; Ferrari, Barbara Abstract: Forest inventories are evolving towards multipurpose resource surveys, broadening their scope by including additional topics such as biodiversity issues. Surprisingly, few quantitative surveys have been devoted to old-growth forests, even if they constitute the most acknowledged forest biodiversity icons. In this framework, the use of probabilistic sampling may provide an effective as well as rigorous support for monitoring and assessing old-growth forests. To this purpose, the present paper proposes a two-phase sampling scheme. In the first phase, a coarse survey of few floristic and stand structural attributes is carried out by means of small plots systematically placed on the study area. Subsequently, in the second phase, a fine assessment of a large number of ecological attributes is performed on a subset of enlarged plots selected among the first-phase ones by means of simple random sampling without replacement. The proposed sampling scheme is implemented for monitoring and assessing the old forests of Cilento National Park (southern Italy). Results and comments are provided as an exemplicative case study. Description: L'articolo è disponibile sul sito dell'editore www.tandf.co.uk/journals/ Thu, 31 Dec 2009 23:00:00 GMT http://hdl.handle.net/2067/2111 2009-12-31T23:00:00Z