0000000000141078

AUTHOR

Tommaso Sitzia

showing 2 related works from this author

Tree invasions in Italian forests

2022

Many forest tree species have been moved outside their native range to provide goods and services elsewhere, but some of them have become invasive, causing negative impacts on biodiversity and human activities. The assessment and knowledge on the degree and scale to which forest ecosystems are invaded by non-native trees is of paramount importance for tailored policies and strategies aiming at forest conservation. By analyzing main databases and literature and applying a four-level scale of invasion (not currently invaded and with low invasibility; potentially invasible; moderately invaded; massively invaded), we assessed the current and potential occurrence of twenty-five invasive non-nati…

biodiversity; exotic trees; global change; invasive alien species; non-native trees; silvicultureinvasive alien speciesnon-native treesSettore AGR/05 - Assestamento Forestale E SelvicolturaBiodiversity Exotic trees Global change Invasive alien species Non-native trees SilvicultureForestrysilvicultureManagement Monitoring Policy and Lawexotic treesglobal changeNature and Landscape Conservationbiodiversity
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Finite Mixture Model-based classification of a complex vegetation system

2020

Aim: To propose a Finite Mixture Model (FMM) as an additional approach for classifying large datasets of georeferenced vegetation plots from complex vegetation systems. Study area: The Italian peninsula including the two main islands (Sicily and Sardinia), but excluding the Alps and the Po plain. Methods: We used a database of 5,593 georeferenced plots and 1,586 vascular species of forest vegetation, created in TURBOVEG by storing published and unpublished phytosociological plots collected over the last 30 years. The plots were classified according to species composition and environmental variables using a FMM. Classification results were compared with those obtained by TWINSPAN algorithm. …

0106 biological sciencesforest vegetationSoil scienceMixture model010603 evolutionary biology01 natural sciencescluster analysis finite mixture model forest vegetation Italian peninsula vegetation plotsEnvironmental sciencesvegetation plotscluster analysis finite mixture model forest vegetation Italian peninsula vegetation plotscluster analysis; finite mixture model; forest vegetation; Italian peninsula; vegetation plotsmedicineGE1-350finite mixture modelmedicine.symptomVegetation (pathology)Italian peninsulacluster analysis010606 plant biology & botanyMathematicsVegetation Classification and Survey
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