Search results for "WOOD"
showing 10 items of 818 documents
Soil aggregate stability under different Mediterranean vegetation types
1998
The influence of vegetation type on soil erodibility was studied by means of aggregate stability measurements using the Modified Emerson Water Dispersion Test (MEWDT), water-drop impacts (CND and TDI) and Ultrasonic Disruption (UD) methods on soils from north-facing slopes of the mountain range of La Serra Grossa in the eastern Iberian Peninsula. Soils with similar characteristics but covered by the main plant species at the study area were selected. Quercus ilex woodland showed the most resistant soil aggregates followed by Q. coccifera and Pistacea lentiscus scrubland, Brachypodium retusum grassland and Pinus halepensis woodland. Aggregates developed beneath dwarf shrubs like Rosmarinus o…
THE CLASS QUERCO-FAGETEA SYLVATICAE IN SICILY: AN EXAMPLE OF BOREO-TEMPERATE VEGETATION IN THE CENTRAL MEDITERRANEAN REGION
2012
A syntaxonomical revision of the class Querco-Fagetea sylvaticae in Sicily, based on literature data and unpublished relevés, is presented. This class groups the mesophilous woods characterized by the dominance of deciduous trees (e.g. Fagus sylvatica, Quercus sp. pl., Acer sp. pl.), and more rarely by conifers (Taxus baccata, Pinus nigra subsp. calabrica), as well as by other broadleaved trees, such as Betula aetnensis, Populus tremula, Castanea sativa. In Sicily, these woody communities are widespread in the northern and north-eastern districts of the island, chiefly on the highest peaks (Madonie, Nebrodi, Peloritani, and Etna). This class is represented in Sicily by two, both flor…
Wood-inhabiting fungal communities : Opportunities for integration of empirical and theoretical community ecology
2022
Publisher Copyright: © 2021 The Author The interest in studying wood-inhabiting fungal communities has grown in recent years. This interest has mainly been motivated by the important roles of wood-inhabiting fungi in ecosystem functioning (e.g. nutrient cycling) and conservation biology (e.g. their sensitivity to forest management). In this paper, I argue that another important, but yet largely unexplored motivation for studying wood-inhabiting fungal communities, is their potential to advance fundamental community ecology. One major advantage of wood-inhabiting fungi as model systems is that they are organized as spatially well-defined metacommunities, thus conforming to the assumptions of…
Comparison of the Fungistatic Activity of Selected Essential Oils Relative to
2018
The aim of the study was to determine the chemical composition of lemon, rosewood, geranium and rosemary oils, and compare their effect on the sensitivity of Fusarium graminearum ZALF 24 and Fusarium graminearum ZALF 339 isolated from infected cereals. The tested oils were added to Potato Dextrose Agar (PDA) medium at concentrations of 0.125%, 0.25%, 0.5%, 1.0% and 2.0%. The activity of the oils on inhibition of the linear growth of mycelium was evaluated by measuring the growth of fungal colonies (growth index), while the fungistatic activity was evaluated on the basis of the percentage growth inhibition of a fungal colony and calculated according to Abbott’s formula. The sensitivity of th…
Characterization of lignin dissolved during alkaline pretreatment of softwood and hardwood
2015
Various alkaline pretreatments were applied to Scots pine (Pinus sylvestris) and silver/white birch (Betula pendula/pubescens) wood chips and the characterization of sulfur-free lignin dissolved was performed. The behavior of lignin during these pretreatments (alkali charge 1–8% NaOH, time 30–120 minutes, and temperature 130–150°C) was studied mainly in terms of lignin removal efficiency and molar mass distribution of dissolved lignin. The amount of lignin in pretreatment liquors increased along with an increase in the alkali charge of 0.8–4.4% and 0.6–3.4% of o.d. pine and birch wood, respectively. The most significant parameter affecting the molar mass of the dissolved lignin was shown to…
Morphometrics of the wood mouse (Apodemus sylvaticus, Mammalia, Rodentia) in the Mediterranean
1995
Abstract Sexual dimorphism, ontogenetic variation and allometric shape changes related to variation in size were considered and eliminated before performing discriminant analyses on geographic variation of Apodemus sylvaticus in central Mediterranean areas. Preliminary multivariate analyses of A. sylvaticus populations showed influences of sex and age in the ordination results. Giantism, i.e. size increase and shape‐related change, was more pronounced on islands like Pantelleria and Marettimo. By principal component analysis, we found an allometric factor which proved statistically correlated to insularity parameters (area, distance from mainland, and altitude) but not to the number of pred…
Study of students' motivation to perform learning tasks using the educational virtual environment Silva Numerica
2022
This document presents the modalities of realization and the results of two experiments of the use of the EVE Silva Numerica with students of 1st technological STAV. It shows the impact of different scenarios of use of this EVE with regard to a scenario using a video resource on the regulation of student motivation during a teaching/learning session concerning concepts relating to forest development (environment and competition). It is based on the model developed by the self-determination theory - SDT (Deci and Ryan, 1971, 1975, 1985, 1991) and reworked by Vallerand et al. (1989) in the context of the development of the educational motivation scale (EMS), a tool on which we based our data …
Driving forces affecting the adoption of certifications in the forest-based industry: a systematic literature review
2021
Several forest certification schemes have become increasingly popular over the last few decades as voluntary mechanisms to tack sustainability in the forest-based industry to an environmental, social, and economic paradigm. This study aims to systematically review the economic literature on the main motivational factors affecting the adoption of Forest Stewardship Council (FSC) and Programme for the Endorsement of Forest Certification (PEFC) certifications in order to perform a broadly theoretical assessment of this research field and identify the most relevant driving forces affecting the adoption of third-party certification in the forest-based industry. Results reveal that the most relev…
A multi-disciplinary investigation of the "Tavolette fuori posto" of the "Hall of Barons" wooden ceiling of the "Steri" (Palermo, Italy)
2016
Abstract Four painted slabs, called “Tavolette fuori posto” (Slabs out of place), of Galleria Interdisciplinare Regionale della Sicilia — Palazzo Abatellis (Palermo, Italy) were investigated with multi-techniques approach by using noninvasive and micro-destructive techniques. The slabs presumably belong to the decoration of the wooden ceiling of the “Hall of Barons” of the Palazzo Chiaramonte, said Steri, in Palermo (Italy). The aim of this study was to investigate the kind of materials used by the artist, the executive technique and the state of conservation. Pigments, binders and trace of previous restorations were identified. The results were used to properly plan the restoration interve…
Sospeso fra due mondi. Appunti per ina biografia di Erich Wolfgang Korngold
2011
Il saggio traccia un breve profilo biografico di E.W. Korngold (1897-1957), con particolare riferimento alle opere del "periodo americano" e alla sua 'attività nell'ambito del cinema hollywoodiano.