Search results for "sistematica"

Global diversity and geography of soil fungi

2014

Fungi play integral roles in soil nutrient cycling, but the determinants of fungal diversity and biogeographic patterns of key functional groups remain poorly understood. By using pyrosequencing data from hundreds of globally distributed soil samples, we demonstrated fungal diversity that expands upon the taxonomic and molecular diversity recorded so far. Except for ectomycorrhizal symbionts, fungal functional group richness was unrelated to plant diversity and plant-to-fungus richness ratio declined exponentially towards the poles. Climatic factors, followed by edaphic and spatial variables, constituted the best predictors of fungal richness and community composition at the global scale. F…

Chemical composition and microencapsulation suitability of sumac (Rhus coriaria L.) fruit extract

2021

Sumac (Rhus coriaria L.), a spice obtained by grinding whole sumac berries, is a complex natural product with a plethora of biological activities that can be favorably explored in nutraceutical and pharmaceutical fields. Sicilian sumac is herein chemically investigated by means of a combined NMR/HR MS-based profiling. A hydroalcoholic extract was prepared and its complexity unraveled following fractionation in an alcoholic and an aqueous fraction. The 1H-NMR spectrum of this latter fraction was dominated by the signals of gallic acid and its derivatives, whereas HR MS and HR MS/MS analyses highlighted the diversity in malic acid derivatives. Gallotannins and galloyl flavonol glycosides with…

Bedrock and soil geochemistry influence the content of chemical elements in wild edible mushrooms (Morchella group) from South Italy (Sicily)

2019

Chemical elements in the samples of wild edible mushrooms of the <em>Morchella</em> group collected from different unpolluted Sicilian sites was analyzed by the ICP-MS (method) to detect the content of their minerals and determine whether soil geology and geochemistry can influence the chemical composition in fungi. Results showed that the mushroom samples mainly contained a high concentration of K and P and a wide variety of minor and trace elements (V, Mo, Pb, Ce, Cs, Zr), including heavy metals. Statistical analysis showed that the mushrooms differed in their content of minor and trace elements based on the geological/geographic site of origin. Comparison with other studies s…

Taxonomy and conservation ofPancratium maritimum(Amaryllidaceae) and relatives in the Central Mediterranean

2015

Pancratium maritimum L. (Amaryllidaceae) is a geophyte occurring in the Mediterranean region, from the Black Sea to part of the Atlantic coast. This plant is receiving much attention from the international scientific community due to its value as a bioindicator, the potential industrial value of its chemical compounds, and its use as a commercial ornamental plant. Plant morphometry and sequences of three plastid DNA regions (rbcL, matK, trnH-psbA) were used to assess the phenotypic and genetic variability of this taxon and its closest congeneric species (in particular Pancratium linosae, from the volcanic island of Linosa) in the Central Mediterranean (Sicily, Tunisia and surrounding island…

Citizen and scientsts work together to monitor marine alien species in Sicilian waters (central Mediterranean)

2017

We report on the experience of two citizen science projects: the Project “Caulerpa cylindracea – Egadi Islands” and the Project “Invasive Algae”, included within the “Seawatchers” platform. The first one, sponsored by the STEBICEF Department of the University of Palermo and by the Egadi Islands Marine Protected Area (MPA), aims at creating a database on the spread dynamics of C. cylindracea within the Egadi Islands MPA. The second one, coordinated by the Institute of Marine Sciences of Barcelona (CSIC, Spain), collects data on 10 marine invasive alien species. The results of these projects highlighted the important role that citizen science campaigns can have as early-warning systems. We al…

Sistematiche gaiane e definizione di obligatio

2011

Principi di spontaneizzazione in Sicilia di Aesculus hippocastanum (Hippocastanaceae)

2009

The first record of Aesculus hippocastanum naturalized in Sicily is presented from a locality near the Alcantara river (Floresta, Messina) in the montane belt where decidous Turkey oak and chestnut woods are found. This species is not frequently cultivated in Sicily. In that locality several mature individuals likely introduced several decades ago occur.

Progettare l’osservazione sistematica nella scuola dell’infanzia

2014

Come possiamo utilizzare l’osservazione sistematica e i dati acquisiti per aiutare gli insegnanti ad avvalersi di strumenti adeguati e a migliorare la loro pratica didattica? Il presente lavoro costituisce una guida per supportare gli insegnanti nella costruzione di strumenti di osservazione validi e attendibili che permettano di rilevare dati utili per migliorare le pratiche didattiche e propone le fasi di costruzione e di validazione di uno strumento di osservazione sistematica progettato e realizzato insieme a 31 insegnanti delle scuole dell’infanzia di Gela (CL). L’intervento è stato sperimentato negli anni scolastici 2012/2013 e 2013/2014 nell’ambito del progetto promosso dall’Azienda …

Orobanche centaurina Bertol. the correct name for O. kochii F.W. Schultz (Orobanchaceae)

2019

After the studying the original material of Orobanche centaurina Bertol. (Orobanchaceae) deposited in BOLO, a forgotten species described from Massa (Central Italy) parasitizing Centaurea paniculata L., and compared it with the type of O. kochii F.W. Schultz and with the types of others taxa actually considered synonyms of this, we concluded that the name of Bertoloni is the correct one for this species. Orobanche centaurina Bertol., nombre correcto para O. kochii F.W. Schultz (Orobanchaceae). Después de estudiar el material original de Orobanche centaurina Bertol. (Orobanchaceae) depo sitado en BOLO, una olvidada especie descrita de Massa (Italia central) parásita de Centaurea paniculata L…

Are Red Lists really useful for plant conservation? The New Red List of the Italian Flora in the perspective of national conservation policies

2013

La nuova Lista Rossa della flora Italiana comprende tutte le "policy" specie italiane e altre specie di nota conservazione e comprende 400 taxa di cui il 65% sono minacciate di estinzione. La Lista Rossa si basa su un enorme data-set georeferenziato utile per gli scopi di conservazione. - The New Red List of the Italian Flora includes all the Italian policy species and other species of known conservation concerns for a total of 400 taxa, 65% of which are threatened with extinction. The Red List is based on a huge georeferenced data-set useful for conservation purposes. -