Search results for "phytosociology"
showing 10 items of 85 documents
Osservazioni fitosociologiche su aspetti di vegetazione a Quercus ilex di Monte Sparagio (Trapani)
2010
Phytosociological observation on some aspect of Quercus ilex vegetation located on the Monte Sparagio (Trapani- N-NW Sicily) – The study of some Quercus ilex residual formations occurring on the Monte Sparagio in the Trapani district (NW Sicily) is presented here. These formations testify that in the past thermophilous Quercus ilex woods were widespread along the littoral mountains facing to Tyrrhenian sea. They are assigned to the Rhamno alaterni-Quercetum ilicis pistacietosum terebinthi.
Biodiversity of the orophilous communities of Pino-Juniperetea class in the Central and Eastern Mediterranean area.
2000
The authors examine the orophilous communities, occuring in the Central and Eastern Mediterranean area, characterized by the dominance of trees and shrubs belonging to the genera Juniperus, Abies and Pinus. These communities are localized in the supra- and oromediterranean belt and show a relict role. From the structural point of view, this kind of vegetation is usually bistratified, with a low dense shrubby layer and spaced tree layer; sometime the latter one is absent. This vegetation is floristically poor and characterized by prevalence of Coniferous, such as Juniperus sabina, J. foetidissima, J. excelsa, J. oxycedrus. J. hemisphaerica, J. communis, J. nana, Abies nebrodensis, A. alba, A…
The orophilous dwarf-shrub vegetation of Mt. Troodos (Cyprus).
2005
A phytosociological survey on the orophilous dwarf-shrub vegetation of Mt. Troodos (Cyprus) is presented. Four associations are described, the first three being linked to the upper supramediterranean bioclimatic belt: Nepeto troodi-Hypericetum stenobotryos, dwelling the summit plateaux on ultramaphic sediments, Salvietum willeanae, substituting the previous one in hollow sites, where the snow-cover lasts longer, Onosmo troodi-Astragaletum chionistrae, colonizing eroded soils on steep, windy slopes, Alysso cyprici-Genistetum crudelis replacing the Nepeto troodi-Hypericetum stenobotryos at lower altitudes, within the lower supramediterranean belt. Due to the noteworthy floristic autonomy of t…
A survey of the weedy communities of Sicily
2007
As Sicily has been a central crossroads of human activity for thousands of years, it offers a major perspective on the Mediterranean weedy plant communities. This syntaxonomical survey of the Sicilian weedy vegetation groups together for the first time 30 plant associations, that have been described from the main and neighboring island in the last three decades. The surveyed vegetation is ascribed to the classes Papaveretea rhoeadis and Stellarietea mediae, whose floristic autonomy is here discussed, and to the orders Aperetalia spicae-venti and Papaveretalia rhoeadis for the former, Polygono-Chenopodietalia polispermi, Solano-Polygonetalia convolvuli, Thero-Brometalia and Urtico-Scrophular…
Flora e vegetazione della Riserva Naturale Orientata "Laghetti di Marinello" (Sicilia nord-orientale)
2011
Flora and vegetation of Natural Reserve “Laghetti di Marinello” (North-Eastern Sicily) - Flora and vegetation of the Natural Reserve “Laghetti di Marinello” (Patti, NE Sicily) are examined. in this area extending 414 hectares, different environmental aspects enabled the emergence of various types of vegetation. The plant-communities are represented by halophilous communities (Juncetea maritimi), riverine hygrophilous communities (Phragmito-Magnocaricetea), psammophilous coenoses (Ammophiletea, Cakiletea maritimae), chasmophytic coenoses (Asplenietea trichomanis), woody and nanophanerophytic coenoses (Quercetea ilicis), and steppic prairies (Lygeo-Stipetea). The floristic analysis testifies …
La vegetazione psammofila della Sicilia settentrionale
2010
Coastal sand dune vegetation of Northern Sicily from Termini Imerese (Palermo) to Capo Peloro (Messina) was examined. The study revealed the presence of low dunes whose evolution and development is biased either by the local coast mophogenetic processes or due to the high anthropogenic pressure. Several associations referred to the classes Cakiletea and Ammophiletea were found, and, in particular: Salsolo kali- Cakiletum maritimae, Cakilo maritimae-Xanthietum italici, Salsolo kali-Euphorbietum peplis, Glaucio flavi-Matthioletum tricuspidatae, Sporoboletum arenarii, Cypero capitati-Agropyretum juncei, Medicagini marinae-Ammophiletum australis and Centaureo sphaerocephalae-Ononidetum ramosiss…
La classe Parietarietea judaicae Oberd. 1977 in Italia.
2002
The class Parietarietea judaicae Oberd. 1977 in Italy. On the basis of literature and unpublished data, a synthesis on the synanthropic chasmophilous perennial vegetation occurring in the Italian territories has been carried out. These plant communities are linked to masonry walls and rocky faces heavily disturbed by man, and are dominated by hemicryptophytes, chamaephytes and bryophytes. From the syntaxonomical point of view, in accordance with the majority of the authors who studied the matter, the wall vegetation should be ascribed to a well-distinguished class, Parietarietea judaicae Oberd. 1977, rather than to the Asplenietea trichomanis class, as proposed by other authors. Within the …
The Lygeo-Stipetea class in Sicily
2010
Basing on literature data and unpublished relevés from Sicily, a survey of the syntaxa belonging to the class Lygeo-Stipetea Rivas-Martínez 1978 is presented. This perennial vegetation is characterized by the dominance of big caespitose hemicryptophytes, and it is widely distributed in Sicily from the sea level up to 1500 m a.s.l. The class is represented in Sicily by two orders, floristically and ecologically well differentiated: Lygeo-Stipetalia, including the sole alliance Moricandio-Lygeion exclusively of clayey substrates, and Hyparrhenietalia hirtae, including five alliances (Hyparrhenion hirtae, Avenulo cincinnatae-Ampelodesmion mauritanici, Thero-Brachypodion ramosi, B…
The Querco-Fagetea class in Sicily: an example of boreal temperate vegetation in the central Mediterranean area
2011
Datos sobre las tiledas ibéricas (Tilio-Acerion Klika 1955)
2008
Se aportan datos sobre las tiledas ibéricas, que se agrupan en tres asociaciones fitosociológicas dentro de la alianza Tilio-Acerion: Hedero-Tilietum platyphylli (pirenaica y prepirenaica), Helleboro occidentalis-Tilietum platyphylli (orocantábrica) y Ononido aragonensis-Tilietum platyphylli (oroibérica). En el seno de la primera se proponen dos nuevas subasociaciones: la típica, fraxinetosum excelsioris (pirenaica, silicícola, con estratos arbóreo y herbáceo muy ricos), y festucetosum gautieri (prepirenaica, calcícola y más pobre florísticamente), que pretenden explicar algunas variaciones observadas en su área de distribución. El nombre Ononido-Tilietum se propone como nuevo para remplaza…