Search results for "Lygeo-Stipetea"

A formal classification of the Lygeum spartum vegetation of the Mediterranean Region

2019

Aims: We examined all available literature and some unpublished data on the We examined all available literature and some unpublished data on the grasslands dominated by Lygeum spartum from Southern Europe and North Africa to produce a formalised classification of this vegetation and to identify the main factors determining its plant species composition. Location: Mediterranean Basin and Iberian Peninsula. Methods: We used a dataset of 728 releves, which were resampled to reduce unbalanced sampling effort, resulting in a dataset of 568 releves and 846 taxa. We classified the plots by TWINSPAN, interpreted the resulting pools, and used them to develop formal definitions of phytosociological …

Phytosociological notes on the Lygeum spartum grasslands from Crete.

2002

Lygeum spartum grasslands from Crete have been studied by the application of the phytosocological method. A new alliance, Scorzonero creticae-Lygeion sparti and three new associations and have been recognized. The first, Limonio hyssopifolii-Lygeetum sparti occurs on halomorphyc badlands in the Sitia territory (NE Crete); the second Erodio crassifolii-Lygeetum sparti grows on heavily eroded clayey outcrops close to Hyerapetra (SE Crete); the third Convolvulo oleifolii-Lygeetum sparti, substitutes the previous one some Km eastward from Hyerapetra, on stratified marls alternated to conglomerates. Within the last association, two subassociations have been recognized: limonietosum roridi (typic…

The Lygeo-Stipetea class in Sicily

2009

Phytosociological and distributional researches on the grasslands of the class Lygeo-Stipetea in western Sicily.

2009

The thermo and meso-xerophilous pseudo-steppic vegetation is widespread in the driest areas of the Mediterranean Region and is primarily referred at the class Lygeo-Stipetea. This sintaxon includes communities dominated by several hemicryptophytes, which are also associated to some geophytes and therophytes. In Sicily this vegetation is distributed from sea level to 1300-1400 m, on different substrates (limestone, gypsum, schists, calcarenites, conglomerates, etc.), within the thermo and mesomediterranean belt dry to subhumid. Principally, are secondary grasslands used for grazing, localized on previously deforested areas, where the periodic burnings play a fundamental role in maintaining t…

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…