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Floristic richness and phytogeography of the “Torrente Trasubbie” nature reserve in southern Tuscany (Italy)
No full textThe vascular flora of Monte Penna Natural Reserve (Grosseto, Southern Tuscany) [La Flora vascolare della Riserva Naturale "Monte Penna" (Grosseto, Toscana meridionale)]
No full textThis paper presents the results of floristic researches in the "Monte Penna" Natural Reserve, a mountain area located south of Monte Amiata. The area (about 1110 hectares) is one of the fossil islands of southern Tuscany. After a brief description of the geomorphological, climatic and vegetation features of the area, the list of the vascular flora is given, which was made out through floristic field researches, bibliography and herbarium specimens (SIENA, Herb. Selvi, Herb. Frignani). The checklist includes 640 native species belonging to 87 families and 323 genera, plus 13 introduced species. The life-form spectrum shows the dominance of hemicryptophytes (43.4%) over therophytes (26.6%) and geophytes (15.8%), while the chorological analysis highlights the codominance of the Eurosiberian and Mediterranean elements with an important contribution of Boreal and Apenninic species. Floristic similarity with respect to the other calcareous fossil islands in Southern Tuscany is analysed. Although only two narrow-ranged endemics (Cerastium arvense ssp. arvense var. etruscum and Ornithogalum etruscum) are found in the area, the presence of rare or noteworthy plants such as Delphinium fissum, Silene muscipula, Prunus mahaleb, Anchusella cret-ica, Centaurea scabiosa, Sternbergia colchiciflora and others underscores the phytogeographical relevance of the Reserve and its role as a regional hot-spot for the conservation of plant diversity
Abundance of Orchids on Calcareous Grasslands in Relation to Community Species, Environmental, and Vegetational Conditions
No full textThe abundance of Orchidaceae on three calcareous grasslands is studied in relation to floristic
composition, environmental and vegetational factors and plant traits (ecological and life forms). The aims
are: (i) to identify a group of species that is significantly correlated with the abundance of Orchidaceae or with
individual species of orchids on calcareous grasslands; (ii) to study the relationship between traits associated
with habitat specialisation, community life forms and the abundance of orchids; (iii) to identify the main
environmental and vegetational predictors of the abundance of orchids. A shortlist of species is found to be
significantly correlated with the abundance of total orchids, Orchis pauciflora and O. morio. The life forms of
the community species do not show any correlation with the orchids, with the exception of Orchis pauciflora,
which tends to increase in communities rich in hemicryptophytes and poor in annual species. Analyses of
Orchis morio seem to suggest that it has a high level of ecological tolerance. The most important predictors of
the abundance of orchids are the substrate reaction (basic) and arid grassland with low herbaceous vegetation
cover (i.e. high soil reaction and luminosity values, positive correlation with the cover of lichens and rocki
ness, negative correlation with tree cover and herbaceous layer). The least favourable sites were the least basic
and most superficial and arid sites
Vascular flora of "Scodella" Nature Reserve (Arezzo, Eastern Tuscany) [Flora vascolare della Riserva Naturale Biogenetica "Scodella" (Arezzo, Toscana orientale)]
No full textWe report the results of floristic research carried out in the "Scodella" Nature Reserve. Firstly, a brief description of the geomorphological, climatical and vegetational features of the area is given. Secondly, the list of the vascular flora is given, which was made out through floristic field researches, bibliography and herbarium specimens. This list includes 286 species belonging to 72 families and to 186 genera; 6 of them are introduced species. The biological spectrum shows that hemicryptophytes outnumber therophytes here - 54,1% against 8,5% - suggesting the dominance of subcontinental subclimate. This is also confirmed by the chorological analysis, which reveals the abundance of Eurosiberian elements and numerous connections with the oroipsophylous subdominion. There are 6 endemic species and a number of interesting species from a phytogeographical and conservational viewpoint: Aconitum lycoctonum, Arisarum proboscideum, Lilium martagon, Paris quadrifolia, Sedum monregalense, Senecio brachychaetus. The presence of rare or noteworthy plants underscores the role of the Reserve as a local hotspot for the conservation of plant diversity into the "Foreste Casentinesi" National Park. © 2009, Informatore Botanico Italiano
LA FLORA VASCOLARE DELLA RISERVA NATURALE “LA PIETRA” (TOSCANA MERIDIONALE)
No full textVengono presentati i risultati dell’indagine floristica condotta all’interno della
Riserva Naturale Provinciale “La Pietra”. La flora risulta costituita da 549 specie alle quali
vanno aggiunte 3 specie esotiche. Gli endemiti stenocori sono soltanto tre, mentre le endemiche
s.l. sono in totale 8. La Riserva presenta una flora vascolare piuttosto diversificata
con molte entità importanti dal punto di vista fitogeografico e/o conservazionistico quali
Lupinus graecus, Asplenium septentrionale, Crocus etruscus, Erythronium dens-canis,
Euphorbia nicaeensis, Malus florentina. In particolare, sullo sperone roccioso sommitale
di diaspro, si rinvengono gli habitat più ricchi di specie rare in Toscana. Viene riportato
inoltre il confronto con studi analoghi in altre aree protette della Toscana meridionale
Flora e vegetazione di interesse conservazionistico: studi in ambienti dulciacquicoli della Toscana Meridionale
No full textThe riverbed vegetation of the Regional Importance Site Trasubbie stream (Grosseto, Southern Tuscany) [La vegetazione dell'alveo fluviale del Sito d'Importanza Regionale Torrente Trasubbie (Grosseto, Toscana Meridionale)]
No full textThe vegetation of the Regional Importance Site Trasubbie stream has been studied. The survey has been made for means of 104 phytosociological reléves compared with the available bibliographic data. The phytosociologic study has allowed to describe the following classes: Phragmito-Magnocaricetea, Isoëto-Nanojuncetea, Bidentetea tripartitae, Salicetea purpureae, Artemisietea vulgaris, Stellarietea mediae, Rosmarinetea officinalis, Rhamno-Prunetea, Quercetea ilicis, Querco-Fagetea. Finally some considerations on dynamics and vegetation series are expressed. © 2005, Societa Toscana di Scienze Naturali. All rights reserved
Aquatic and hygrophilous plants of ponds in the "Riserva Naturale di Cornocchia" and "La Selva" (catchment area of the river Feccia, Tuscany) [Le piante acquatiche e igrofile negli stagni della Riserva Naturale di Cornocchia e del complesso demaniale “La Selva” (Bacino del fiume Feccia, Toscana)]
No full textIn this paper, we present the richness and composition of aquatic (hydrophytes) and hygrophilous species of 37 artificial ponds, located in forest and grassland pastures within a protected area of Tuscany (central italy). after about 50 years from their creation, they have shown a high frequency of these species and the presence of interesting plants as Alisma lanceolatum, Groenlandia densa, Juncus bulbosus, Potamogeton trichoides and Zannichellia palustris. The hydrophytic and hygrophilous exotic species are absent. The ponds are habitat of Community interest “Codice 3140” - Hard oligo-mesotrophic waters with benthic vegetation of Chara spp.” for the frequency of occurrence of Chara hispida, meso-oligotrophic species and chemical characteristics
Contribution to the knowledge of the vegetation of «Monte Penna» Natural Reserve (Grosseto, southern Tuscany) [Contributo alla conoscenza della vegetazione della Riserva naturale provinciale "Monte Penna" (Grosseto, Toscana meridionale)]
No full textNel presente lavoro viene esaminata la vegetazione della Riserva Naturale Provinciale del «Monte Penna». L’area è caratterizzata da un complesso di rilievi montuosi con quote comprese tra 600 e 1000 m s.l.m. e da un clima umido, mesotermico con modesto deficit idrico estivo. Tramite 38 rilievi fitosociologici originali comparati con i dati bibliografici disponibili sono state individuate le principali formazioni vegetali, inquadrabili nelle seguenti classi: Stellarietea mediae, Koelerio-Corynephoretea, Molinio-Arrhenatheretea, Festuco-Brometea, Rhamno-Prunetea, Querco-Fagetea. Sei sono gli habitat considerati di interesse regionale e/o comunitario:
1) pratelli rupicoli calcicoli o basofili dell’Alysso-Sedion albi; 2) praterie aride seminaturali e facies arbustive dei substrati calcarei (Festuco-Brometea); 3) praterie magre da fieno del piano montano e subalpino; 4) boschi a dominanza di faggio su substrato basico dell’Europa temperata; 5) boschi misti di latifoglie mesofile dei macereti e dei valloni su substrato calcareo (Tilio-Acerion); 6) boschi a dominanza di faggio degli Appennini con Abies alba (Fagion). Viene presentata anche una carta della vegetazione dell’area
Flora and vegetation in the catchment area of the stream "La Bolza" in the Merse valley (Siena, southern Tuscany)
No full textThis study illustrates the results of a floristic and phytosociological study conducted in a small portion (375
ha) of the Merse valley. Following a brief description of the geomorphologic and climatic aspects, the bryological and
vascular flora is presented, obtained through floristic field studies and bibliographic data. The bryological flora includes
25 moss species including Sphagnum subnitens and S. capillifolium, which are of interest from a conservationist viewpoint,
and 5 liverworts; the vascular flora comprises 252 species (belonging to 68 families and 186 genera); there are
only three endemic entities but many species considered as rare or of interest, including Anagallis minima, Blechnum spicant,
Carex viridula, Dryopteris dilatata, Erythronium dens-canis, Juncus bulbosus, Osmunda regalis and Radiola linoides,
thus highlighting the phytogeographical relevance of this biotope. Chorological analysis highlighted the dominance of
eurosiberian and boreal elements. The principal vegetation types sampled can be ascribed to the following alliances: Cicendio
filiformis-Solenopsion laurentiae (Isoetetalia, Isoeto-Nanojuncetea), Osmundo-Alnion and Alnion incanae (Populetalia
albae, Querco-Fagetea), Erythronio dens-canis-Quercion petraeae and Teucrio siculi-Quercion cerridis (Quercetalia-pubescenti-
petraeae, Querco-Fagetea), Sarothamnion scoparii (Cytisetalia scopario-striati, Cytisetea scopario-striati). There are three
habitats of Community interest: alluvial forests with Alnus glutinosa (code 91EO), woods of Castanea sativa (code 9260)
and rare short-lived small coenoses of Isoeto-Nanojuncetea (code 3130)
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