scholarly journals Plant Communities of Travertine Outcrops of the Saturnia Area in Southern Tuscany (Central Italy)

Hacquetia ◽  
2013 ◽  
Vol 12 (1) ◽  
pp. 141-164
Author(s):  
Daniele Viciani ◽  
Barbara Maffei ◽  
Federico Selvi

Abstract A phytosociological survey was carried out in a poorly known travertine area of southern Tuscany harbouring a rich vegetation mosaic with chamaephytic garrigues, species-rich xerophytic grasslands, chasmophytic coenoses, annual species-dominated communities, shrublands and thermophilous deciduous forests. Field sampling and data analysis allowed to identify and characterize several community types, some of which of significant interest due to their ecological specificity and rarity in peninsular Italy. In particular, our data confirm the associations Pistacio terebinthi-Paliuretum spinosae and Pistacio terebinthi-Quercetum pubescentis, respectively a shrub and forest community type previously unknown for Tuscany. In addition, a new therophytic association of travertine debris named Sedetum hispanico-caespitosi and placed in the Hypochoerion achyrophori alliance (Brachypodietalia distachyi order, Tuberarietea class) is also described. Finally, dynamic relationships between the vegetation types are highlighted and the presence of conservation priority habitats in the area are pointed out.

1977 ◽  
Vol 7 (2) ◽  
pp. 217-225 ◽  
Author(s):  
Roger Del Moral ◽  
James N. Long

Vegetation of the Cedar River watershed, located in the Cascade Mountains of western Washington, was analyzed by an agglomerative clustering method followed by discriminant analysis. Stepwise mutliple discriminant analysis provided a means to reallocate stands and assists in the production of a classification scheme and a key to the vegetation types. Ten types are recognized, six from upper-elevation older-growth stands, and four seral types from lower elevation stands logged since 1900. Each type can be identified in the field with a simple key based on cover percentage. The key provides a means for large-scale vegetation mapping with a limited amount of effort.


2016 ◽  
Vol 46 (1) ◽  
pp. 49-68 ◽  
Author(s):  
Vladimir Stupar ◽  
Jugoslav Brujić ◽  
Željko Škvorc ◽  
Andraž Črni

2021 ◽  
Vol 39 ◽  
pp. 01008
Author(s):  
V.P. Naumkin ◽  
N.A. Lopachev ◽  
V.T. Lobkov

The honey flora of the forest plant community is an important forage resource for the development of beekeeping. That’s why it is desirable to assess species composition and total number of honey plants and to determine the honey reserve of the area of the forest community plant. The forest cover of the Orel region is 9.3%, and this cover is distributed on its territory very irregularly. 257 species out of the total number of honey plants in the region are found in the forests. Deciduous forests are dominant in the Orel region including oak, ash, linden, birch and aspen. The results of studies of flowering plants in the forest plant community showed that there is a sufficient number of honey plants in the forest to provide bee families with nectar from spring to late autumn due to the natural flower-nectar conveyor. The assessment of the honey stock of this community shows that the stock equals 4,872 tons from 203 thousand hectares of forest. And bees can sip only about 30% (1,626 tons). It proves that significant honey reserves are concentrated in the forest plant community of the Orel region. The rational use of these reserves will help to solve the problem of reproduction of new bee families of the aboriginal Central Russian breed and to organize a long honey gathering by bees that provide people of the region with honey.


2020 ◽  
Vol 57 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Marta Latini ◽  
Emanuele Fanfarillo ◽  
Elisa De Luca ◽  
Mauro Iberite ◽  
Giovanna Abbate

The weed vegetation of the bean “Fagiolo Cannellino di Atina” (Phaseolus vulgaris L.) and the red pepper “Peperone di Pontecorvo” (Capsicum annuum L.) PDO (Protected Designation of Origin) crops was surveyed by means of 16 relevés, sampled in four farms of southern Latium during July 2019. The relevés were subjected to multivariate analysis, which revealed that the two crops are weeded by vegetation types referable to two different subassociations of Panico-Polygonetum persicariae (Spergulo-Erodion, Eragrostietalia, Digitario-Eragrostietea). Namely, communities colonizing bean fields, which are more mesophilous and richer in Eurasian taxa, are ascribable to the subassociation sorghetosum halepensis. Communities colonizing red pepper fields, which are more thermophilous and richer in Mediterranean taxa, are ascribable to the subassociation cyperetosum rotundi. Floristic, structural, and chorological features of the communities are discussed in relation to environmental factors and agricultural management.


Bothalia ◽  
1975 ◽  
Vol 11 (4) ◽  
pp. 561-580 ◽  
Author(s):  
B. J. Coetzee

I he vegetation of the Rustenburg Nature Reserve, situated on the Magaliesberg in Acocks’s (1953) Sour Bushveld veld Type ot South Africa, is classified by the Braun-Blanquet Method. Five major vegetation types, including mam subtypes, basic community types, variations and sub-variations are described floristically, physiognomically and in terms of habitat features. The vegetation is mapped at community tvpe and variation level, at a scale of 1 : 30 000.


1982 ◽  
Vol 12 (4) ◽  
pp. 835-847 ◽  
Author(s):  
L. Oosterhuis ◽  
R. A. A. Oldeman ◽  
T. L. Sharik

The architectural approach to the analysis of forest structure and dynamics, which originated in the tropics, has increasingly been applied to temperate forests during recent years, especially in Europe. However, few examples are available for this continent. To test the usefulness in North American temperate deciduous forests, an architectural analysis was conducted in a series of Appalachian oak forest stands. Central to the analysis are profile diagrams and plans of forest sample plots, five of which are presented here in detail. The interpretation of the diagrams focuses on the growth and development of the individual tree as well as the forest community, and thereby reveals certain phenomena which may not be detected by traditional plot sampling techniques. The architectural approach adds a new dimension to the existing array of research methods and its application is expected to be of great value in basic and applied studies of forest ecology.


2015 ◽  
Vol 8 (3) ◽  
pp. 279-286 ◽  
Author(s):  
M Landi ◽  
E Salerni ◽  
E Ambrosio ◽  
M D’Aguanno ◽  
A Nucci ◽  
...  

1988 ◽  
Vol 66 (4) ◽  
pp. 793-804 ◽  
Author(s):  
Claude St-Jacques ◽  
Daniel Gagnon

The forest vegetation of the north-west section of the St. Lawrence Valley in Quebec was sampled within 68 quadrats. The location of the quadrats was selected by means of a stratified random sampling plan. Ordination (detrended correspondence analysis) and cluster analysis (TWINSPAN) allowed the identification of 11 forest community types. The ecological factors most closely associated with the distribution of these communities are soil drainage and richness. These two factors are strongly related to the types of surface deposits. Communities dominated by Acer saccharum are found on well drained and nutrient-rich moraines. On the contrary, communities dominated by Acer rubrum and the majority of coniferous forests are found on poorly drained and nutrient-poor soils. Two floristically distinct community types, the Fraxinus – Tilia americana forests and the Tsuga canadensis – Acer saccharum forests, are found on poorly drained marine deposits with edaphically identical lower horizons. However, the pH and major cation concentrations of the upper soil horizons are much lower under the cover of the hemlock forests than under the cover of the ash – basswood forests.


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