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Uncovering current pyroregions in Italy using wildfire metrics

Ecological Processes 2022年第1期11卷 259-275页

作者： Mario Elia Vincenzo Giannico Davide Ascoli Juan Pablo Argañaraz Marina D’Este Giuseppina Spano Raffaele Lafortezza Giovanni Sanesi Department of Agricultural and Environmental Sciences University of Bari A.MoroVia Amendola 165/A70126 BariItaly Department of Agricultural Forest and Food SciencesUniversity of TurinLargo Braccini 210095 GrugliascoTOItaly Mario Gulich Institute for Advanced Space Studies(CONAE-UNC) CONICETRoute C45km 8CP 5187 Falda del CañeteCórdobaArgentina Department of Geography The University of Hong KongCentennial CampusPokfulam RoadHong KongChina

Background:Pyrogeography is a major field of investigation in wildfire science because of its capacity to describe the spatial and temporal variations of fire *** propose a systematic pyrogeographic analytical approach to cluster regions on the basis of their *** employed the Affinity Propagation algorithm to cluster pyroregions using Italian landscape as a test bed and its current wildfire metrics in terms of density,seasonality and stand replacing fire ratio.A discussion follows on how pyrogeography varies according to differences in the human,biophysical,socioeconomic,and climatic ***:The algorithm identified seven different pyroregion *** main gradients were identified that partly explain the variability of wildfire metrics observed in the current ***,a gradient characterized by increasing temperatures and exposure to droughts,which coincides with a decreasing latitude,and second,a human pressure gradient displaying increasing population density in areas at lower *** drivers exerted a major influence on wildfire density,burnt area over available fuels and stand replacing,which were associated to warmdry climate and high human *** study statistically highlighted the importance of a North–South gradient,which represents one of the most important drivers of wildfire regimes resulting from the variations in climatic conditions but showing collinearity with socioeconomic aspects as ***:Our fully replicable analytical approach can be applied at multiple scales and used for the entire European continent to uncover new and larger *** could create a basis for the European Commission to promote innovative and collaborative funding programs between regions that demonstrate pyrosimilarities.

关键词： Pyrogeography Affinity propagation Forest mediterranean basin Clustering

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Planktonic foraminifera as bio-indicators for monitoring the climatic changes that have occurred over the past 2000 years in the southeastern Tyrrhenian Sea

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Integrative Zoology 2014年第4期9卷 542-554页

作者： Fabrizio LIRER Mario SPROVIERI Mattia VALLEFUOCO Luciana FERRARO Nicola PELOSI Laura GIORDANO Lucilla CAPOTONDI Institute for Coastal Marine Environment National Research CouncilNaplesItaly Institute for Coastal Marine Environment National Research CouncilTorretta Granitola(Fraz.Campobello di MazaraTp)Italy Istituto Scienze Marine Istituto per l’Ambiente Marino CostieroConsiglio Nazionale delle RicercheConsiglio Nazionale delle RicercheBolognaItaly and Institute of Marine SciencesNational Research CouncilBolognaItaly

A high-resolution integrated study has been performed in a super-expanded marine record(sedimentation rate spanning from 11 cm/100 years to 20 cm/100 years)from the continental shelf area of the southeastern Tyrrhenian *** foraminiferal distribution illustrates 6 major environmental changes during the past 2000 years:(i)the Roman Period-Dark Age transition(from herbivorous-opportunistic to carnivorous species);(ii)the Dark Age-MCA transition(from carnivorous to herbivorous-opportunistic species);(iii)the Medieval Classic Anomaly-Little Ice Age transition(a further and definitive change from carnivorous to herbivorous-opportunistic species);(iv)the period during the Maunder event between approximately 1720 AD and 1740 AD(turnover from the carnivorous planktonic foraminifer Globigerinodes ruber to the herbivorous-opportunistic planktonic foraminifer Turborotalita quinqueloba);(v)the Industrial Period(dominance of herbivorous-opportunistic planktonic foraminifera);and(vi)the Modern Warm Period at approximately 1940 AD(the last turnover in favor of herbivorous-opportunistic planktonic foraminifers,associated with an increase in benthic foraminifera).Our studies lead us to link this latter feature to an anthropogenic impact associated with the damming of Sele River(Salerno Gulf)at 1934 AD,which induced a change in the sediment input with a strong decrease in coarse-grained fraction and a probable alteration in nutrient ***δ^(18)O_(***) record of the past 2000 years shows the alternation of warm/wet and cold/dry events related to the Roman Period,the Dark Age,the Medieval Classic Anomaly,the Little Ice Age,the Industrial Period and the Modern Warm *** 5 evidentδ^(18)O_(***) oscillations(between approximately 1325 AD and 1940 AD)coincide with the 5 minima in the solar activity record(Wolf,Spörer,Maunder,Dalton and Damon events).

关键词： mediterranean basin oxygen stable isotopes planktonic foraminifera southeastern Tyrrhenian Sea

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Modeling fire ignition probability and frequency using Hurdle models: a crossregional study in Southern Europe

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Ecological Processes 2020年第1期9卷 634-647页

作者： Marina D’Este Antonio Ganga Mario Elia Raffaella Lovreglio Vincenzo Giannico Giuseppina Spano Giuseppe Colangelo Raffaele Lafortezza Giovanni Sanesi Department of Agricultural and Environmental Sciences University of Bari A.MoroVia Amendola 165/A70126 BariItaly Department of Agriculture University of SassariViale Italia 3907100 SassariItaly Department of Geography The University of Hong KongCentennial CampusPokfulam RoadPok Fu LamHong Kong

Background:Wildfires play a key role in shaping mediterranean landscapes and ecosystems and in impacting species *** studies have investigated the wildfire occurrences and the influence of their drivers in many countries of the mediterranean ***,in this regard,no studies have attempted to compare different mediterranean regions,which may appear similar under many *** response to this gap,climatic,topographic,anthropic,and landscape drivers were analyzed and compared to assess the patterns of fire ignition points in terms of fire occurrence and frequency in Catalonia(Spain),Sardinia,and Apulia(Italy).Therefore,the objectives of the study were to(1)assess fire ignition occurrence in terms of probability and frequency,(2)compare the main drivers affecting fire occurrence,and(3)produce fire probability and frequency maps for each ***:In pursuit of the above,the probability of fire ignition occurrence and frequency was mapped using Negative Binomial Hurdle models,while the models’performances were evaluated using several metrics(AUC,prediction accuracy,RMSE,and the Pearson correlation coefficient).The results showed an inverse correlation between distance from infrastructures(i.e.,urban roads and areas)and the occurrence of fires in all three study *** relationship became more significant when the frequency of fire ignition points was ***,a positive correlation was found between fire occurrence and landscape drivers according to *** land cover classes more significantly affected were forest,agriculture,and grassland for Catalonia,Sardinia,and Apulia,***:Compared to the climatic,topographic,and landscape drivers,anthropic activity significantly influences fire ignition and frequency in all three *** the distance from urban roads and areas decreases,the probability of fire ignition occurrence and frequency ***,it is essential to implement long-to medium-

关键词： Driving factor Fire frequency Fire management Fire occurrence Hurdle models mediterranean basin Wildfires

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An integrated assessment of a group with complex systematics: the Iberomaghrebian lizard genus Podarcis (Squamata, Lacertidae)

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Integrative Zoology 2008年第4期3卷 247-266页

作者： Miguel A.CARRETERO CIBIO Reseach Center in Biodiversity and Genetic ResourcesCampus Agrário de Vair鉶4485-661VairaoPortugal

A critical review of the evolutionary biology of Iberian and North African lizard members of the genus Podarcis(Lacertidae)based on phylogeny,phylogeography,morphometrics,behavior,ecology and physiology is *** Iberomaghrebian region is inhabited by at least 12 different evolutionary lineages that group into a monophyl-etic clade(except Podarcis muralis).In contrast to the current taxonomy,the saxicolous‘Podarcis hispanica’is paraphyletic with respect to Podarcis bocagei and Podarcis carbonelli,two currently recognized *** in the phylogenetic tree are deep,resulting from old divergences,clearly preceding the ***,more recent range changes as a result of glaciations are also *** most plausible evolutionary scenario for this group indicates both vicariant and dispersal *** parapatry between lineages is the rule,sympatry and even syntopy are frequent,but usually between ground-dwelling and saxicolous *** between forms with similar habitat use are rare and *** distinctiveness between lineages has been demonstrated,indicating historical ***,other characters have repeatedly evolved under similar environmental pressures independently of the evolutionary *** sexual dimorphism derives from sexual selection and is attained before sexual maturity,although developmental restrictions *** between popu-lations is also important and derives from local variation in both natural(habitat,climate)and sexual(density)selective *** for short-term changes has already been found,particularly in insular *** isolation between syntopic forms and partner recognition are based on male–male competition and on visual and chemical recognition of females by conspecific *** this ancient diversification,most forms maintain a degree of reproductive *** may occur,but is limited,and there is evidence of selection

关键词： Morphometrics mediterranean basin phylogeny Podarcis reproductive isolation speciation.

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Comparative Study of The ALADIN and AROME Wind Effect on Waves Characteristics:Application On The International Port Of Algiers

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Journal of Atmospheric Science Research 2019年第3期2卷 1-5页

作者： Sara Chikhi Mohamed El Amine Slimani Department of Energetic and Fluid Mechanics faculty of physicsUniversity of Science and Technology Houari Boumedienne(USTHB)16111 AlgiersAlgeria Numerical Weather Forecast National Center for MeteorologyAvenue Mohamed Khemisti BP 153 Dar el Beida16011 AlgiersAlgeria

Numerical modeling of sea states has been developed for years,and used for varied fields such as coastal work sizing,navigation safety,beaches and water leisure stability *** third-generation ocean wind-wave spectral model WAVEWATCH III(WW3)software was adopted and developed to simulate wave propagation in the mediterranean *** this work,a more detailed study was carried out on the port of *** different atmospheric models have been used to get the wind forcing:ALADIN(Area Limited Dynamic Adaptation Inter National Development)with an 8 km *** AROME(Application to Operational Research at Meso-scale)with a 3 km *** results obtained using both of the atmospheric models have been compared and analyzed.

关键词： Wind-Waves Wave propagation mediterranean basin WAVEWATCH Wave-characteristics

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