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Last name: CASAZZA
First name: Gabriele
Email: gabriele.casazza@unige.it
Institution: UNIGE
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Prima segnalazione in Liguria della specie
Presentazione di attività ed iniziative di conservazione vegetale in Ligurua finanziate dalla Regione e dalla Comunità Europea.
Prima segnalazione in Italia di Moehringia intermedia avvenuta in Liguria precco Capo Noli.
Aim The main aim of this study was to compare different methods for the determination of both areas of endemism (AoEs) and biotic elements by analysing all the endemic plant species of a region, using our own data on the distribution of such taxa in the Maritime and Ligurian Alps. Our other goals were to use indicator species analysis (INDVAL)...
Presentazione dei principali fiori spontanei delle Alpi Liguri e loro riconoscimento tramite il colore dei petali.
A new species of Caryophyllaceae, Moehringia argenteria Casazza & Minuto, is described from the Argentera Massif in the Maritime Alps in Italy. Its morphology, distribution and habitat are given with reference to bioclimatic biogeographical and phytosociological aspects. The characteristics are also presented to enable comparison with most...
Seeds of 27 species of Moehringia and four related representatives of Arenaria (old M. sect. Pseudomoehringia) were examined by scanning electron microscopy. Novel morphological features were observed in addition to those found in a previous similar study. The new information thus obtained provided new insight into the taxonomic value of...
The Maritime Alps are one of the 'hot spots' in the Mediterranean basin. This study investigated two endemic plants, Moehringia lebrunii and Moehringia sedoides (Caryophyllaceae) in order to increase knowledge of the vegetation of this region, and to investigate possible conservation strategies. Ecogeographic surveys and molecular analyses were...
Lo studio sistematico di popolazioni vegetali è un approccio interdisciplinare che riguarda molti aspetti della biologia vegetale. Monitorare gruppi d'individui o gruppi di popolazioni permette di verificare lo stato di conservazione di individui e di specie, di comprendere la biologia riproduttiva delle stesse, di interpretare i sistemi...
Relazione dei campionamenti effettuati nell'ambito del PIT per approfondimenti genetici su alcune specie endemiche delle Alpi Marittime
Biotic elements and areas of endemism are here detected in the Maritime and Ligurian Alps with a new methodology.
Osservazioni sull'andamento demografico dell'unica popolazione ligure di Thymelaea hirsuta. Risulta evidente come i 57 individui adulti siano a rischio se non si prevedono interventi conservativi.
This study focuses on the decrease of T. hirsuta populations along the North Tyrrhenian Coast, the northern edge of the species areal; and on the necessity to preserve this species within this area. The drastic drop in population density is prejudicing the survival of this species along the North Tyrrhenian Coast, which features high mortality...
Flowering phenology, sexual polymorphism and spatial segregation were studied over two consecutive years in a population of Thymelaea hirsuta (L.) Endl. (Thymelaeaceae) growing on coastal clifIs in north-westem ltaly. The study population was geographically segregated and, together with Croatian sites, it constituted the northemmost margin of...
This overview of endemic plants of the Italian Maritime Alps (107 taxa representing 3.44% of the flora) is the completion of an earlier study carried out on the French side of the same alpine sector. Similar ecological preferences and plant life strategies were detected in both countries, with a particular ability on the part of endemics to...
Primula allionii is a primrose endemic to the Maritime Alps. In order to evaluate its conservation status, we investigated its demographic structure and reproductive success. We studied the plant in three different plots in Roya Valley (France), representing the different structure of cliffs where the plant usually lives. The mean dimensional...
Nature conservation can be considered a social movement that proposes itself to develop or reaffirm in the society some value concerning the relationship between man and nature. Our methods links the hierarcal clustering procedures with the Indicator Values calculation, defining an optimum number of endemic areas maximizing the species indicator values.
Il seme è all'opposto del clone; ogni pianta nata da seme è diversa e ciò contribuisce, più di altro, a garantire la sopravvivenza del regno vegetale e la vita sulla Terra. nell'ambito del Festival della Scienza, la mostra e le iniziative collaterali si pongono l'obiettivo di fornire risposte a chi desidera conoscere i segreti di questa...
Quaternary glaciations and mostly last glacial maximum have shaped the contemporary distribution of many species in the Alps. However, in the Maritime and Ligurian Alps a more complex picture is suggested by the presence of many Tertiary paleoendemisms and by the divergence time between lineages in one endemic species predating the Late...
The function of diaspores in Moehringia genus was investigated and field observations pointed out the elaiosome role in seed predation and dispersal by ants. Histochemical stainings underlined the presence of lipid in the strophiole. Our results are congruent with the hypothesis that some representatives of the genus Moehringia adopt...
Recent studies highlighted the role of Pleistocene climatic cycles in polyploid speciation and of southern Alpine refugia as reservoirs of diversity during glacial maxima. The polyploid Primula marginata, endemic to the southwestern Alps, includes both hexaploid and dodecaploid cytotypes that show no ecological or morphological differences. We...
Primula allionii is a primrose endemic to Maritime Alps. The plant was studied in three different plots representing the different structures of cliffs where the species usually lives. The reproductive success of the plant was analyzed in order to evaluate its conservation status. Mean plant dimensions and distribution within the plots were...
Future climate change may lead to a substantial loss of biodiversity, particularly affecting mountain regions, including the Alps. Range-size reduction in high mountain plant species is predicted to be more pronounced for endemic species. Investigating the broad temporal spectrum of range shifts is important for the conservation of...