The Olea europaea L. var. sylvestris (Mill.) Lehr. forests in the Mediterranean area

This paper examines the forest communities dominated by Olea europaea L. var. sylvestris (Mill.) Lehr. that have been described up until now in the Mediterranean Region (including other isolated extrazonal areas in the northwestern Iberian Peninsula and in Northern Turkey) as more or less evolved aspects of woods, microwoods and high maquis that principally tend to make up climacic and edapho-climacic “series heads”. These forma- tions maintain a significant large-scale distributive potential within the infra- and thermomediterranean bioclimate belts (with a few penetrations into the mesomediterranean) with a dry-subhumid (and sometimes humid) ombrotype; however, they are currently quite rare and fragmented in the wake of large-scale deforestation and the impoverishment of old-growth communities dominated by a species known to live for millennia. The study was conducted through the analysis of phytosociological data taken from the scientific literature and other unpublished data regarding North-Africa (Morocco, Algeria), the Iberian Peninsula, the Balearic Islands as well as other islands from the Tyrrhenian area (Sardinia, Corsica, Sicily and its minor islands), the Italian Peninsula, the Balkan Peninsula, the Aegean region, Turkey and the southern Anatolian coast. A comparison between the different communities has shown a high floristic and physiognomic-structural homogeneity that justifies their categorization in the Quercetea ilicis class. The biogeographic and ecologic vicariance shown by the same formations within the large Mediterranean distribution range makes it pos- sible to subdivide them into the following orders and alliances: 1) Pistacio-Rhamnetalia alaterni [A) all. Tetraclini articulatae-Pistacion atlanticae (suball. Pistacienion atlanticae); B) all. Asparago albi-Rhamnion oleoidis; C) all. Oleo sylvestris-Ceratonion siliquae]; 2) Quercetalia calliprini [D) all. Ceratonio-Pistacion lentisci]; 3) Quercetalia ilicis [E) all. Querco rotundifoliae-Oleion sylvestris; F) all. Fraxino orni-Quercion ilicis; G) all. Erico arboreae-Quercion ilicis; H) all. Arbuto unedonis-Laurion nobilis (suball. Arbuto-Laurenion nobilis)]. Regarding the syntaxonomical aspect: (i) two new associations are described [Hippocrepido emeroidis-Oleetum sylvestris and Junipero foetidissimae-Oleetum sylvestris]; (ii) two new associations [Phillyreo latifoliae-Oleetum sylvestris Barbero, Quézel & Rivas-Martínez ex Gianguzzi & Bazan ass. nova and Calicotomo intermediae-Oleetum sylvestris Quézel, Barbero, Benabid, Loisel & Rivas-Martínez 1988 ex Gianguzzi & Bazan ass. nova] and a new subassocia- tion [Aro neglecti-Oleetum sylvestris Rivas-Martínez & Cantò 2002 corr. Rivas-Martínez & Cantò fraxinetosum angustifoliae Pérez Latorre, Galán de Mera, Deil & Cabezudo ex Gianguzzi & Bazan subass. nova] are leptotypified; (iii) a nomen novum of the association is redefined [Rhamno laderoi-Oleastretum sylvestris (Cantò, Ladero, Perez-Chiscano & Rivas-Martínez 2011) Gianguzzi & Bazan nom. nov.]

The new “Vegetation map of Sicily (Italy)”: a synthetic overview of the distribution of European habitats on the territory.

The new "Vegetation map of Sicily (Italy)", recently published (Gianguzzi, Papini & Cusimano, 2015), shows also a synthetic overview of the distribution of European habitats in the territory; the study area has been extended to small islands circum-Sicilian (archipelago of the Aeolian; Aegadian, Pelagie Ustica and Pantelleria islands), for a total area of 25,703 km2. Our work allowed to resume the knowledge status of the phytosociological studies on vegetation carried out and to identify the actual plant landscape of the region; the map was compiled in a Geographical Information Systems (GIS) environment, in order to produce a cartographic representation in 1:10,000 scale (reduced to a 1:250,000 scale). At the reference scale 36 phytocoenotic types are represented, 16 of which related to European habitats of zonal vegetation (Mediterranean maquis, Quercus ilex woods, Quercus suber woods, Castanea sativa woods, Quercus pubescens deciduous woods, mesophilous deciduous woods, Fagus sylvatica woods, Betula aetnensis woods, woods dominated by woody gymnosperms, forest edge shrubs, orophilous pulvinate shrubs, shrublands and garrigues on substrates of carbonate nature and on substrates of siliceous nature, Ampelodesmos mauritanicus grasslands, mesophilous and sub-hygrophilous grasslands and pastures), 11 related to azonal vegetation (riparian vegetation, psammophilous herbaceous vegetation, chasmo-halophitic vegetation, etc.) and 9 related to anthropogenic vegetation (arable lands and extensive herbaceous crops, vineyards, olive groves and dry cultivation mosaics, hazelnut groves, irrigated citrus groves and orchards, greenhouses, built-up areas). Gianguzzi L., Papini F., Cusimano D., 2015 – Phytosociological survey vegetation map of Sicily (Mediterranean region). – Journal of Maps:1-7 (http://dx.doi.org/10.1080/17445647.2015.1094969)

First record of Ribes uva-crispa L. (Grossulariaceae) from the Madonie Mts., a new species of the Sicilian flora.

In this study, a first record of Ribes uva-crispa L. (Grossulariaceae) – a new species of the Sicilian flora – from the Madonie Mts. is reported. The autochthonous and relict new population of Ribes uva-crispa L. (Grossulariaceae) is found on Mount Carbonara (Madonie Mts., North-Central Sicily), which is several hundred kilometers away from the Central Apenninic and the South Mediterranean locations of its distribution range. R. uva-crispa shows a distribution similar to other taxa extending from the Euro-Asiatic area to the mountains of North Africa with disjunct populations on the main Sicilian reliefs (Madonie and Nebrodi Mts.), testifying ancient phytogeographical connections. This noteworthy record adds a new species – as well as a new genus and new family – to the vascular flora of Sicily. Based on the morphological characters, the population found is to be referred to Ribes uva-crispa L. subsp. austro-europaeum (Bornm.) Bech var. glanduligerum (Lindberg) Maire

Phytosociological survey vegetation map of Sicily (Mediterranean region)

We present the results of a study aimed at developing a vegetation map of Sicily (Italy) including the smaller circum-Sicilian islands, for an area of approximately 25,703 km2. The work is a synthesis of studies carried out in accordance with the survey methodology of phytosociology in the last 40 years over the whole study area. The vegetation map of Sicily was compiled in a Geographical Information Systems (GIS) environment, in order to produce a cartographic representation at a scale of 1:10,000 (reduced to a scale of 1:250,000). The physiognomic-structural characteristics of the plant landscape of Sicily are analyzed, providing a general and, at the same time, detailed overview of the phytocoenotic aspects represented on the territory, as well as of the relative bibliographic references. At the reference scale, 36 types are represented, 16 of which are related to zonal vegetation (Mediterranean maquis, Quercus ilex woods, Quercus suber woods, Castanea sativa woods, Quercus pubescens deciduous woods, mesophilous deciduous woods, Fagus sylvatica woods, Betula aetnensis woods, woods dominated by woody gymnosperms, forest edge shrubs, orophilous pulvinate shrubs, shrublands and garrigues, Ampelodesmos mauritanicus grasslands, mesophilous and sub-hygrophilous grasslands and pastures), 11 are related to azonal vegetation (riparian, psammophilous herbaceous, chasmo-halophitic, etc.) and 9 are related to anthropogenic vegetation (arable lands and extensive herbaceous crops, vineyards, olive groves and dry cultivation mosaics, hazelnut groves, irrigated citrus groves and orchards, greenhouses, built-up areas)

Contribution to the phytosociological characterization of the forest vegetation of the Sicani Mountains (inland of north-western Sicily).

The results of a phytosociological survey on the main forest vegetation aspects of the Sicani Mountains (inland of north-western Sicily), in turn included in the homonymous Regional Park recently established, are presented. This expansive territory (43,687 hectares), located between the Agrigento and Palermo provinces, is mainly composed by carbonate and silico-carbonate formations of the Sicani Units, whose highest peaks are represented by Mount Cammarata (1578 m a.s.l.), Mount delle Rose (1436 m), Pizzo Cangialoso (1420 m) and Mount Pernice (1393 m). Under the bioclimatic aspect, the area falls within the thermo- and supramediterranean belts, with ombrotype ranging from upper dry (annual average rainfall of about 550 mm) in the southern and western slopes, to upper subhumid (annual average rainfall of 800-1000 mm) – sometimes tending towards the wet – in the cacuminal part of the aforecited elevations. Many plant communities were identified and surveyed, several of which are described as new syntaxa; in particular they are some maquis associations [1) Rhamno alaterni-Euphorbietum dendroidis Géhu & Biondi 1997, with the subassociations typicum, phlomidetosum fruticosae (Brullo & Marcenò 1985) comb. nov., rhamnetosum oleoidis (Brullo & Marcenò 1985) comb. nov., celtidetosum aetnensis (Brullo & Marcenò 1985) comb. nov., euphorbietosum bivonae (Gianguzzi, Ilardi & Raimondo 1996) comb. nov.; 2) Ampelodesmo mauritanici-Juniperetum turbinatae Gianguzzi et al. 2012, with the subass. cistetosum cretici Gianguzzi et al. 2012; 3) Asparago albi-Artemisietum arborescentis ass. nova; 4) Euphorbio characiae-Anagyridetum phoetidis ass. nova, with the subass. asparagetosum albae subass.nova and loniceretosum implexae subass. nova; 5) Pistacio terebinthi-Celtidetum aetnensis Gianguzzi, Cusimano & Romano 2014, subass. typicum and phlomidetosum fruticosae Gianguzzi, Cusimano & Romano 2014)], a laurel oak community [Acantho mollis-Lauretum nobilis Gianguzzi, D’Amico & Romano 2010], some holm oak communities [7) Ampelodesmo mauritanici-Quercetum ilicis ass. nova hoc loco, with the subass.typicum subass. nova and viburnetosum tini subass. nova); 8) Sorbo torminalis-Quercetum ilicis ass. nova], some deciduous oak communities with Quercus virgiliana [9) Oleo oleaster-Quercetum virgilianae Brullo 1984; 10) Sorbo torminalis-Quercetum virgilianae Brullo, Minissale, Signorello & Spampinato 1996], a maple community with Acer pseudoplatanus [11) Sorbo graecae-Aceretum pseudoplatani Gianguzzi & La Mantia 2004], a riparian community with Salix sp. pl. [12) Salicetum albo-pedicellatae Brullo & Spampinato 1990] and some shrubby mantles [13) Hyperico majoris-Rubetum ulmifolii ass. nova; 14) Roso corymbiferae-Rubetum ulmifolii ass. nova; 15) Euphorbio characiae-Prunetum spinosae ass. nova; 16) Roso siculae-Prunetum spinosae ass. nova; 17) Crataegetum laciniatae Brullo & Marcenò in Brullo 1984]. A new alliance with a Tyrrhenian centre of gravitation (Asparago acutifolii-Laurion nobilis, in turn ascribed to the class Quercetea ilicis and to the order Quercetalia ilicis), within which the Laurus nobilis microwoods gravitating in the Italo-Tyrrhenian biogeographical Province are framed, is also proposed

A multivariate morphometric analysis of diagnostic traits in southern Italy and Sicily pubescent oaks

Species identification within the species complex of Q. pubescens is a well-known taxonomic challenge among European botanists. Some of the specific pubescent oak binomials currently accepted in various European floras and checklistswere originally described in Sicily and southern Calabria. As a consequence, several species belonging to the pubescent oaks group (Q. pubescens, Q. amplifolia, Q. congesta, Q. dalechampii, Q. leptobalana and Q. virgiliana) are reported in the taxonomic and phytosociological literature. To verify whether it was possible to associate a diverse set of morphological characters with each of these different taxa, thirteen natural populations of pubescent oak from Sicily and southern Calabria were sampled. A total of 391 trees, 3,887 leaves and 1,047 fruits were collected. Overall, 28 morphological characters of oak leaves and fruits were statistically analysed using univariate and multivariate procedures. The results showed that neither the groups of morphological diversity identified by cluster analysis, nor those obtained by our expert identification through the use of analytical keys, matched with the current taxonomical frameworks as proposed by the most recent floras and checklists. Nearly all of the morphological characters considered displayed a more or less continuous trend of variation, both within and among populations. In the light of these findings it seems unlikely that more than one biological species of pubescent oak occurs in Sicily and southern Calabria