Plant Sociology 45 (2) 2018

G. Sburlino¹, M. Tomasella², G. Oriolo², L. Poldini³ & F. Bracco ⁴

¹Dipartimento di Scienze Ambientali, Campo Celestia 2737b, I-30122 Venezia; e-mail: sburlino@unive.it

²Via Marziale 28, I-34074 Monfalcone (GO); e-mail: michela.tomasella@gmail.com, giuseppe.oriolo@gmail.com

³Dipartimento di Biologia, Università di Trieste, via L. Giorgieri 10, I-34127 Trieste; e-mail: poldini@univ.trieste.it

⁴Dipartimento di Ecologia del territorio, Università degli Studi di Pavia, via S. Epifanio 14, I-27100 Pavia; e-mail: francesco.bracco@unipv.it

Aquatic and marsh vegetation of the north-eastern Italy. 2 – The class Potametea Klika in Klika et V. Novák 1941. The rhizophytic vegetation belonging to Potametea in north-eastern Italy is described. Eighteen associations and ten plant communities have been identified, belonging to four alliances (Ranunculion fluitantis, Potamion, Ranunculion aquatilis, Nymphaeion albae) and one order (Potametalia). Two associations are described as new: Potametum prolixi and Sparganio-Vallisnerietum spiralis. For each community, information about the floristic composition, syntaxonomy, synphysionomy, synecology and synchorology is provided. The study pointed out the progressive reduction or disappearance in many localities of the most precious typologies, as a result of environmental modifications and of the eutrophication of water bodies.

A. Catorci¹, A. Vitanzi¹, B. Paura³, M. Iocchi² & S. Ballelli¹

¹Dipartimento di Scienze Ambientali, Sezione di Botanica ed Ecologia, Università di Camerino, via Pontoni 5, I-62032 Camerino (MC); e-mail: andrea.catorci@unicam.it

²Dipartimento di Biologia, Università degli Studi di “Roma Tre”, Viale Marconi 446, 00146, Roma (RM); e-mail: marco.iocchi@gmail.com

³Dipartimento S.A.V.A., Università degli Studi del Molise, via De Sanctis, I -86100 Campobasso (CB); e-mail: fobos@unimol.it

The forest vegetation on the sandstone bedrock in the Val d’Aso (Marche, Italy). Results of a phytosociological study on the wood on the sandstone bedrock are here presented. The studied area is located in the southern part of Marche Region, Ascoli Piceno Province, under the influence of temperate climate (lower/higher mesotemperate and lower supratemperate bioclimatic belts). The vegetation study has been performed throught 119 phytosociological relevés. All data were submitted to multivariate statistical analysis. The phytosociology analysis has permitted to characterize 6 associations, whereof 2 news: Erico arboreae-Quercetum pubescentis ericetosum arboreae and Hieracio murori-Ostryetum carpinifoliae hieracietosum murori. Chorological and synecological datas were described in the paper, compared to the corresponding associations of the limestones bedrock of the neighbouring area.

M. Laribi¹, A. Derridj¹ & M. Acherar ²

¹Département de Biologie, Faculté des Sciences Agronomiques & biologiques, Université Mouloud Mammeri de Tizi-Ouzou, Algérie 15000; e-mail: mlahmoud2000@yahoo.fr

²Conservatoire des Espaces Naturels du Languedoc-Roussillon, Montpellier, France

Phytosociology of decidious forest zeen oak (Quercus canariensis Willd.) in the Ath Ghobri-Akfadou mountain (Grande Kabylie, Algeria). The authors undertake a phytosocilogical analysis of the zeen oak (Quercus canariensis Willd.) forest in the Ath Ghobri-Akfadou mountain. A better floristic knowledge allowed to describe a new subassociation: Rubo incanescentis-Quercetum canariensis Quézel 1956 em. Aimé et al. 1986 aceretosum obtusati subass.nov. revealing the best kept aspect of the supramediterranean zeen oak forest. It follows the mesomediterranean zeen oak forest: Chrysanthemo fontanesii-Quercetum canariensis ass.nov. of mid and low altitudes.
The affinities and analogies of these two zeen oak forests of Grande Kabylia together with numidian even north-african zeen oak forests have been apprehended.

E. Biondi, S. Casavecchia & N. Biscotti

Dipartimento di Scienze Ambientali e delle produzioni vegetali, Università Politecnica delle Marche, Ancona I-60131; e-mail: e.biondi@univpm.it, s.casavecchia@univpm.it, nellobiscotti@fastwebnet.it

Here we present a phytosociological analysis of the forest biodiversity of the Gargano Peninsula, located in the eastern part of the Italian peninsula. As well as presenting all of the woods described and classified in terms of their phytosociology to date, we present the following plant associations that are mainly distributed in the low supratemperate and upper mesotemperate bioclimatic belts: Carici halleranae-Ostryetum carpinifoliae ass. nova; Polysticho setiferi-Ostryetum carpinifoliae ass. nova; Rubio peregrinae-Aceretum campestris; Physospermo verticillati-Quercetum cerris; Doronico orientalis-Carpinetum betuli; Pulmonario apenninae-Aceretum neapolitani ass. nova; Teucrio siculi-Aceretum campestris ass. nova; Festuco exaltatae-Tilietum platyphylli ass. nova; Phyllitido scolopendri-Lauretum nobilis ass. nova and Aremonio agrimonioidis-Fagetum sylvaticae ass. nova. For these, subassociations and variants are described. The syntaxonomic classification allows the description of two new syntaxa at the heirarchical level of alliances: Physospermo verticillati-Quercion cerris, all. nova, the southern Italian substitute for the alliance Erythronio-Carpinion, which includes the southern mesophilous Turkey oak, European hornbeam, Neapolitan maple and field maple woods; Lauro nobilis-Tilion platyphylliTilio platyphylli-Acerion pseudoplatani.