Search results for "Botanica"
showing 10 items of 1665 documents
New records of Malus crescimannoi (Rosaceae) in Sicily
2016
New findings for Malus crescimmanoi, originally known from the mountain area near Floresta (Nebrodi Mts.). The new sites fall in Madonie Mts., where the species is found at the edge of Quercus petraea (Matt.) Liebl. and Fagus sylvatica woods, growing on quartzarenitic substratum at 1200-1800 m of elevation. These new localities are placed at the south-western limit of Fagus sylvatica distribution area, on both north-facing [Contrada Sempria (Castelbuono) and slopes of Madonna dell’Alto (Castellana Sicula)], and south-facing slopes [Locality Prato (Polizzi Generosa)].
Notulae to the Italian native vascular flora: 14
2022
In this contribution, new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, confirmations, and status changes to the Italian administrative regions. Nomenclatural and distribution updates, published elsewhere, and corrigenda are provided as Suppl. material 1.
Notulae to the Italian native vascular flora: 13
2022
In this contribution, new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, confirmations, exclusions, and status changes to the Italian administrative regions. Two new combinations are proposed. Nomenclatural and distribution updates, published elsewhere, and corrigenda are provided as Suppl. material 1. In this contribution, new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, confirmations, and exclusions to the Italian administrative regions. Nomenclatural and distribution updates, published elsewhere, and corrigenda are provided as Suppl. material 1.
Notulae to the Italian native vascular flora: 9
2020
In this contribution, new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, confirmations, exclusions, and status changes to the Italian administrative regions. Two new combinations are proposed. Nomenclatural and distribution updates, published elsewhere, and corrigenda are provided as Suppl. material 1.
Typification of the name Asperula rupestris (Rubiaceae)
2021
Asperula rupestris Tineo (1827: 276) is a species endemic to Sicily, southern Italy. It is a chasmophyte growing on northexposed calcareous rocks and cliffs of the main promontories of NW Sicily and the islands of Favignana and Marettimo, Egadi Islands, NW of Siciliy (see e.g., Giardina et al. 2007).A nomenclatural study of Asperula rupestris (Rubiaceae, tribe Rubieae) revealed that this name has not yet been typified (Peruzzi et al. 2015). The present paper is part of ongoing research on the names of vascular plants described using specimens collected in Sicily (e.g., Di Gristina et al. 2012, 2016, 2017, 2020; Domina et al. 2014, 2016, 2017a, 2017b; Scafidi & Domina 2019; Scafidi et al…
From ethnobotany to experimental research: the therapeutic properties of Sicilian hellebore
2018
In Sicily, the genus Helleborus (Ranuculaceae) is only represented by H. bocconei subsp. siculus (= H. bocconei subsp. intermedius). In some mountain areas of the Island, the rhizomes of this plant, harvested in a particular month of the year (May) and dried, are used in traditional veterinary practice for treating pneumonia in domestic animals, cattle and horses in particular. The same usage – with rhizomes of other Helleborus species or subspecies – is reported from various other areas of Mediterranean Europe. Phytochemical tests have permitted the isolation and characterization of new biologically active molecules. The extracts of rhizomes and aerial parts of the plant were shown antibac…
Some European green roof norms and guidelines through the lens of biodiversity : do ecoregions and plant traits also matter?
2018
Abstract Green infrastructure and in particular green roofs are crucial to meet the challenge of sustainable urbanisation fostered by the current European Research and Innovation agenda. Several documents were issued in the last decades in Europe for regulating the design, construction and up-keep of roof greening. In particular, the actual German guidelines have been widely adopted as a reference basis for green roof design and regulation worldwide, because of its exhaustiveness and proven building- and landscaping tradition. With the aim to assess the effectiveness of green roof guidelines and norms in supporting plant and soil biodiversity in different ecoregions, and particularly of the…
Iron enrichment from hypoxic hypolimnion supports the blooming of Raphidiopsis raciborskii in a tropical reservoir.
2022
Occurring worldwide, blooms of Raphidiopsis raciborskii threaten the use of water resources especially in tropical and subtropical waterbodies. Its high flexibility in the uses of light and macronutrients (C, N, P) frustrates any bloom prediction and control based on macronutrients regulation. To identify the critical factors promoting periodic blooms of R. raciborskii, the trends of meteorological, hydrodynamic, physical, and chemical variables (including macro- and micronutrients: N, P, Fe) were analyzed in a Chinese tropical large reservoir (Dashahe reservoir) over five years. It was hypothesized that Fe availability, mediated by the mixing pattern of the reservoir, played a crucial role…
Plant communities, synusiae and the arithmetic of a sustainable classification
2022
We propose an equation to evaluate the efficiency of a classification as a function of the effort required and the population size of data collectors. The formula postulates a “classification efficiency coefficient”, which relates not only to the complexity of the object to be classified, but also to the data availability and representativeness. When applied to the classification of phytocoenoses, the equation suggests that a classification system based on vascular plants offers the best compromise between sampling effort, resolution power and data availability. We discuss the possibility of basing a vegetation classification on plot records for all macroscopic photoautotrophic organisms co…
Biodiversità vegetale degli stagni temporanei della Sicilia
2009
Gli ambienti umidi effimeri ospitano comunità vegetali specializzate e sono sede esclusiva di rare microterofite nonché autentiche stazioni di rifugio per molte specie a ciclo effimero. Per l’interesse bio-ecologico, Braun-Blanquet ha definito queste fitocenosi un gioiello floristico. Anche la Comunità Europea, con la direttiva Habitat 92/43/CEE, riconosce agli stagni temporanei mediterranei una notevole importanza e li individua come habitat prioritario (3170*). Questi ambienti, essendo stagionali, di modesta estensione, spazialmente dispersi e difficilmente cartografabili, spesso vengono trascurati negli studi a scala di paesaggio. Tali habitat, invece, rappresentano veri e propri micro-h…