1,720,994 research outputs found
Habitat 2130*, 6150, 6170, 6230*, 6410, 6420, 6510, 6520, 91E0*, 9420.
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Il paesaggio vegetale; vegetazione dei litorali; habitat dei litorali; valore floristico-vegetazionale dei litorali
No full textA novel insight into the remnants of hygrophilous forests and scrubs of the Po Plain biogeographical transition area (Northern Italy)
Full text linkHygrophilous forests and scrubs are ecotonal habitats providing essential ecosystem services, especially in human-modified landscapes; nevertheless, they are among the most threatened habitats worldwide. A sound knowledge of waterside woody vegetation provides a valuable basis for interventions of renaturation of waterbodies. This paper focuses on peculiar communities that occur in riparian and swamp areas of the Po Plain, a broad ecotonal area between the Mediterranean and Temperate regions. The study allowed the description of six new associations. Moreover, it provides a detailed picture of Dioscoreo communis-Populetum nigrae (Populetalia albae) and Amorpho fruticosae-Salicetum albae (Salicetalia purpureae), an overview of Salicetum triandrae (Salicetalia purpureae) at the national and European level, and an update of the alliance Dioscoreo-Ulmion minoris, which is better characterized, classified in Populetalia albae and enlarged to include five associations of elm-oak-rich forests of the Po Plain lowlands and the Karst. Dioscoreo-Ulmion includes, besides Lamio orvalae-Ulmetum minoris, also Polygonato-Quercetum roboris and three new associations: Vinco minoris-Ulmetum minoris and Salvio glutinosae-Quercetum roboris from Po Plain rivers and the karstic lakeshore Rhamno catharticae-Ulmetum minoris. The new arrangement of Dioscoreo-Ulmion results from an analysis of Po Plain elm-rich forests including stands so far attributed to the critical alliance Alnion incanae; the presence of Querco-Ulmetum minoris in Italy is discussed. Two new associations are attributed to Prunetalia spinosae: Salici eleagni-Juniperetum communis and Ulmo minoris-Paliuretum spinae-christi. Stands from the Rivers Isonzo and Tagliamento referred to Veratro nigri-Fraxinetum excelsioris and to the new association Carici albae-Fraxinetum excelsioris represent the outermost expressions of the Ostryo-Tilion ravine forests extending towards the High Plain. A Salix alba swamp forest, Galio palustris-Salicetum albae, is reported for the first time in Italy and attributed to Alnetea glutinosae
La vegetazione acquatica e palustre dell’Italia nord-orientale. 2 – La Classe Potametea Klika in Klika et V. Novák 1941
No full textViene descritta la vegetazione acquatica rizofitica riferibile alla classe Potametea nell'Italia nord-orientale. Complessivamente vengono riconosciute diciotto associazioni e dieci aggruppamenti, afferenti a quattro alleanze (Ranunculion fluitantis, Potamion, Ranunculion aquatilis, Nymphaeion albae) nell'ambito di un unico ordine (Potametalia). Due associazioni sono descritte come nuove: Potametum prolixi e Sparganio-Vallisnerietum spiralis. Per ciascuna comunità vengono riportate informazioni su composizione floristica, sintassonomia, sinfisionomia, sinecologia e sincorologia. L'analisi ha anche evidenziato la progressiva contrazione o scomparsa in molti dei tipi di maggior pregio a seguito dei porcessi di modificazione ambientale e di eutrofizzazione delle acque
La vegetazione acquatica e palustre dell’Italia nord-orientale. 1 – La classe Lemnetea Tüxen ex O. Bolòs et Masclans 1955.
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The phytosociological information and the management of the upspring vegetation of Sile River Regional Park (Venetian Plain - Northern Italy).
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