A syntaxonomic revision of the holm-oak and cork-oak woods of Sardinia is here presented. The geological and phytoclimatic heterogeneity of the island and the wide ecological amplitude of the holm-oak, result in a large phytocoenotic diversity of the Sardinian holm-oak woods. These are referred to five associations: Pyro amygdaliformis-Quercetum ilicis, Prasio majoris-Quercetum ilicis ass. nova, Galio scabri-Quercetum ilicis, Saniculo europaeae-Quercetum ilicis ass. nova and Aceri monspessulani-Quercetum ilicis. From the phytogeographic point of view, in the subhumid-humid, meso-supramediterranean bioclimatic belts of Sardinia the presence of the association Galio scabri-Quercetum ilicis is found to be remarkable. As far as the cork-oak woods are concerned, the associations Galio scabri-Quercetum suberis and Violo dehnhardtii-Quercetum suberis ass. nova are here reported. The Sardinian-Corsican holm-oak and cork-oak woods define the western limit of the European central-Mediterranean alliance Fraxino orni-Quercion ilicis of which in Sardinia there are many characteristic and differential entities. In the Sardinian-Corsican holm-oak woods, however, there are endemic entities (Arum pictum ssp. pictum, Helleborus lividus ssp. corsicus, Digitalis purpurea var. gyspergerae, Quercus ichnusae and Paeonia morisii) and other western-centred entities with little or no spread on the Italian peninsula (Galium scabrum, Clematis cirrhosa and Teucrium scorodonia). These entities allow the proposal that within the alliance Fraxino orni-Quercion ilicis can be recognised the new Sardinian-Corsican suballiance Clematido cirrhosae-Quercenion ilicis (typus: Prasio majoris-Quercetum ilicis ass. nova), which is endemic to the Sardinian and Corsican sectors of the Italo-Tyrrhenian Province. Consequently, the suballiance Fraxino orni-Quercenion ilicis, which is the typical of the alliance Fraxino orni-Quercion ilicis, has also been proposed.
Contributo alla conoscenza dell’ordine Quercetalia ilicis Br.-Bl. ex Molinier 1934 della Sardegna. Viene presentata una revisione sintassonomica delle leccete e delle sugherete della Sardegna. L’eterogeneità geologica e fitoclimatica dell’isola e l’ampia valenza ecologica che vi presenta il leccio determinano la notevole diversità fitocenotica delle leccete sarde. Queste vengono riferite a 5 associazioni: Pyro amygdaliformis-Quercetum ilicis, Prasio majoris-Quercetum ilicis ass. nova, Galio scabri-Quercetum ilicis, Saniculo europaeae-Quercetum ilicis ass. nova e Aceri monspessulani- Quercetum ilicis. Dal punto di vista fitogeografico si ritiene importante la presenza, nel piano bioclimatico meso-supramediterraneo, subumidoumido della Sardegna, dell’associazione Galio scabri-Quercetum ilicis. Per le sugherete vengono riconosciute le associazioni: Galio scabri-Quercetum suberis e Violo dehnhardtii-Quercetum suberis ass. nova. Le leccete e le sugherete sardo-corse costituiscono la propaggine occidentale dell’alleanza centro-mediterranea europea Fraxino orni-Quercion ilicis della quale in Sardegna sono presenti numerose entità caratteristiche e differenziali. Nelle leccete sardo-corse tuttavia sono presenti entità endemiche (Arum pictum ssp. pictum, Helleborus lividus ssp. corsicus, Digitalis purpurea var. gyspergerae, Quercus ichnusae, Paeonia morisii) ed altre entità a baricentro occidentale poco o nulla diffuse nella penisola italiana (Galium scabrum, Clematis cirrhosa e Teucrium scorodonia) le quali consentono di proporre, nell’ambito dell’alleanza Fraxino orni-Quercion ilicis, la nuova suballeanza sardo-corsa Clematido cirrhosae-Quercenion ilicis (typus: Prasio majoris-Quercetum ilicis ass. nova) quale endemica dei settori sardo e corso della Provincia Italo-Tirrenica. Viene pertanto istituita anche la suballeanza Fraxino orni-Quercenion ilicis tipica dell’alleanza Fraxino orni-Quercion ilicis.
A contribution to the knowledge of the order Quercetalia ilicis Br.-Bl. ex Molinier 1934 of Sardinia / Bacchetta, G; Bagella, Simonetta; Biondi, E; Farris, Emmanuele; Filigheddu, Rossella Speranza; Mossa, L.. - In: FITOSOCIOLOGIA. - ISSN 1125-9078. - 41:1(2004), pp. 29-51.
A contribution to the knowledge of the order Quercetalia ilicis Br.-Bl. ex Molinier 1934 of Sardinia
BAGELLA, Simonetta;FARRIS, Emmanuele;FILIGHEDDU, Rossella Speranza;
2004-01-01
Abstract
A syntaxonomic revision of the holm-oak and cork-oak woods of Sardinia is here presented. The geological and phytoclimatic heterogeneity of the island and the wide ecological amplitude of the holm-oak, result in a large phytocoenotic diversity of the Sardinian holm-oak woods. These are referred to five associations: Pyro amygdaliformis-Quercetum ilicis, Prasio majoris-Quercetum ilicis ass. nova, Galio scabri-Quercetum ilicis, Saniculo europaeae-Quercetum ilicis ass. nova and Aceri monspessulani-Quercetum ilicis. From the phytogeographic point of view, in the subhumid-humid, meso-supramediterranean bioclimatic belts of Sardinia the presence of the association Galio scabri-Quercetum ilicis is found to be remarkable. As far as the cork-oak woods are concerned, the associations Galio scabri-Quercetum suberis and Violo dehnhardtii-Quercetum suberis ass. nova are here reported. The Sardinian-Corsican holm-oak and cork-oak woods define the western limit of the European central-Mediterranean alliance Fraxino orni-Quercion ilicis of which in Sardinia there are many characteristic and differential entities. In the Sardinian-Corsican holm-oak woods, however, there are endemic entities (Arum pictum ssp. pictum, Helleborus lividus ssp. corsicus, Digitalis purpurea var. gyspergerae, Quercus ichnusae and Paeonia morisii) and other western-centred entities with little or no spread on the Italian peninsula (Galium scabrum, Clematis cirrhosa and Teucrium scorodonia). These entities allow the proposal that within the alliance Fraxino orni-Quercion ilicis can be recognised the new Sardinian-Corsican suballiance Clematido cirrhosae-Quercenion ilicis (typus: Prasio majoris-Quercetum ilicis ass. nova), which is endemic to the Sardinian and Corsican sectors of the Italo-Tyrrhenian Province. Consequently, the suballiance Fraxino orni-Quercenion ilicis, which is the typical of the alliance Fraxino orni-Quercion ilicis, has also been proposed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.