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Flora and vegetation of Rio Torto area in Brasimone ENEA Centre, Bologna; Flora e vegetazione dell'area Rio Torto nel centro ENEA del Brasimone, Bologna

Abstract

The Rio Torto area, on the northern slope of the Tosco-Emiliano Apennine, in the C.R. Enea Brasimone property, has been the object of a research study on flora and vegetation to delineate the vegetal coverage and to evaluate the vegetal population changes. The study on vegetation has been carried out using the Braun-Blanquet method, a flora-statistical approach based on an accurate analysis of the flora and on statistical sampling of the studied object. Data has been analysed using the SYN-TAX-Multivariate Data Analysis software package, in order to get out a classification and, therefore, some syn-taxonomic levels in vegetation. Result is a dendogram with clusters connected by transverse lines and organised in a Hierarchical Clustering system. The dominant species in the Rio Torto area is beech; elements of the Arrhenatheretalia association are well-represented at the lower edge of the wood, while a broad glade characterised by Pteridium aquilinum (L.) Kuhn, by Prunus spinosa L. and by Crataegus monogyna Jacq is at the upper edge. Grassy undergrowth is dominated by Eurasian and boreal elements and, from a physiognomic-structural point of view, is quite rich. The biological spectrum analysis points up the particularly high value of the hemicryptophytes: this result couldn't be justified  More>>
Authors:
De Mei, M; Varriale, A [1] 
  1. ENEA, Centro Ricerche Casaccia, Rome (Italy). Dipt. Ambiente
Publication Date:
Jul 01, 1999
Product Type:
Technical Report
Report Number:
ENEA-RT-AMB-99-20
Reference Number:
EDB-01:022345
Resource Relation:
Other Information: PBD: 1999
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ITALY; PLANTS; LAND RESOURCES; LAND USE; SILVICULTURE; SITE CHARACTERIZATION; SPECIES DIVERSITY; ECOSYSTEMS
OSTI ID:
20107850
Research Organizations:
ENEA, Centro Ricerche Casaccia, Dipt. Ambiente, Rome (Italy)
Country of Origin:
Italy
Language:
Italian
Other Identifying Numbers:
Other: ISSN 1120-5555; TRN: IT0001184
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20107850
Submitting Site:
ITA
Size:
35 pages
Announcement Date:
Mar 11, 2001

Citation Formats

De Mei, M, and Varriale, A. Flora and vegetation of Rio Torto area in Brasimone ENEA Centre, Bologna; Flora e vegetazione dell'area Rio Torto nel centro ENEA del Brasimone, Bologna. Italy: N. p., 1999. Web.
De Mei, M, & Varriale, A. Flora and vegetation of Rio Torto area in Brasimone ENEA Centre, Bologna; Flora e vegetazione dell'area Rio Torto nel centro ENEA del Brasimone, Bologna. Italy.
De Mei, M, and Varriale, A. 1999. "Flora and vegetation of Rio Torto area in Brasimone ENEA Centre, Bologna; Flora e vegetazione dell'area Rio Torto nel centro ENEA del Brasimone, Bologna." Italy.
@misc{etde_20107850,
title = {Flora and vegetation of Rio Torto area in Brasimone ENEA Centre, Bologna; Flora e vegetazione dell'area Rio Torto nel centro ENEA del Brasimone, Bologna}
author = {De Mei, M, and Varriale, A}
abstractNote = {The Rio Torto area, on the northern slope of the Tosco-Emiliano Apennine, in the C.R. Enea Brasimone property, has been the object of a research study on flora and vegetation to delineate the vegetal coverage and to evaluate the vegetal population changes. The study on vegetation has been carried out using the Braun-Blanquet method, a flora-statistical approach based on an accurate analysis of the flora and on statistical sampling of the studied object. Data has been analysed using the SYN-TAX-Multivariate Data Analysis software package, in order to get out a classification and, therefore, some syn-taxonomic levels in vegetation. Result is a dendogram with clusters connected by transverse lines and organised in a Hierarchical Clustering system. The dominant species in the Rio Torto area is beech; elements of the Arrhenatheretalia association are well-represented at the lower edge of the wood, while a broad glade characterised by Pteridium aquilinum (L.) Kuhn, by Prunus spinosa L. and by Crataegus monogyna Jacq is at the upper edge. Grassy undergrowth is dominated by Eurasian and boreal elements and, from a physiognomic-structural point of view, is quite rich. The biological spectrum analysis points up the particularly high value of the hemicryptophytes: this result couldn't be justified by the mountainous nature of the zone but it could be considered a sign of stress. From the vegetation and phytosociological study, a classification of the beech population on the basis of the complex of characteristics is gained; in this classification, the beech population is fitted in the order Fagetalia Pawl, 1928 (Ubaldi and Speranza, 1985) and in the alliance Fagion Sylvaticae medioeuropeo (Luquet 1926) Tx and Diemont 1936. No particular association has been identified within the alliance, because is not possible to detect a species well-defined contingent. Ecologically more demanding species absence and non-characteristic entities intrusion is linked to the general state of degradation of this vegetation: it's due, above all, to the intense sylviculture practised in the area and to the severe climatic conditions. Although the human intervention on the wood coming down, effects are still visible and represented by a not easy to classify vegetational disorder. Beechwood has been cutting periodically for a long time, causing a complex structural situation; in fact, seedlings and tillers have different diameters but similar height. Both analysis of flora and vegetational and phytosociological study represent respectively a qualitative and qualitative-quantitative approach for vegetational valuation. [Italian] L'are Rio Torto, situata sul versante settentrionale dell'Appennino tosco-emiliano nella proprieta' del C.R. Enea Brasimone, e' stata oggetto di uno studio floristico e vegetazionale al fine di delineare le condizioni della copertura vegetale e di valutare le variazioni delle caratteristiche del popolamento vegetazionale. Per lo studio della vegetazione e' stato adottato il metodo di Brau-Blanquet, basato sull'accurata analisi della flora e sul campionamento statistico. L'elaborazione dei rilievi e' stata realizzata con il software SYN-TAX. Il faggio e' la specie dominante dell'area; al margine inferiore della faggeta sono ben rappresentati gli elementi dell'associazione Arrhenatheretalia mentre al margine superiore si estende una ampia radura caratterizzata da Pteridium aquilinum, da Prunus spinosa e da Crataegus monogyna. Il sottobosco erbaceo si presenta discretamente ricco dal punto di vista fisionomico-strutturale e dominato da elementi euroasiatici e boreali. Lo spettro biologico che ne deriva indica un valore alto per le emicriptofite e questo e' da considerare un indice di stress. I risultati ottenuti dall'indagine vegetazionale e fitosociologica hanno permesso di inquadrare i popolamenti di faggio nell'Ordine Fagetalia e nell'alleanza Fagionsylvaticae medioeuropeo. Nessuna particolare associazione e' stata identificata all'interno dell'alleanza poiche' non si individua un contingente di specie ben definito. La mancanza di specie ecologicamente piu' esigenti e l'intrusione di entita' poco caratteristiche sono indice di un generale stato di degradazione della vegetazione, dovuto soprattutto all'intensa attivita' selvicolturale effettuata nell'area e alle severe condizioni climatiche. Nonostante l'attuale diminuzione dell'intervento umano, il riflesso dei danni causati e' ancora rappresentato da un apparente disordine vegetazionale non facilemente classificabile.}
place = {Italy}
year = {1999}
month = {Jul}
}