1,721,013 research outputs found
Analisi eco-paesistica finalizzata alla gestione multifunzionale del bosco nella Toscana meridionale
No full textRole of the public and private sectors in restoring forest landscapes Italian experiences
No full textECOSISTEMI FORESTALI NEL PAESAGGIO. RIFLESSIONI SULL'IMPORTANZA DEL "CONTESTO", TRA ECOLOGIA, DETERMINANTI DI CAMBIAMENTO, POLITICA E STRUMENTI NORMATIVI
No full textSome considerations are drawn on the need to consider
forest ecosystems within the landscape ecological context,
with the purpose to create, also in the mind of many forest
technicians and public administrators, a reference
framework for the science and the art of Sylviculture,
which would represent the “expert” mode through which
the objectives of forest management, defined in a wider
process of landscape governance, can be accomplished.
Such considerations, are not extraneous to the lesson of
the Italian School of Forest Ecology, and spring, on the one
hand, from the problem of the "lack of well defined
objectives" (with respect to both Sylviculture and
management) for the implementation of interventions
financed on EU funds (Motta 2007) and, on the other, from
the, relatively recent and rather variegate, demonstration of
interest for landscape ecological issues in the Italian
forestry literature.
They make reference to the system of values, behaviors,
perceptions, demands of human communities that
influence accelerated dynamics of the present landscapes,
and they recall the undersigned appointments through the
European Convention of the Landscape, as well as the
legal commitments deriving from the Directive 92/43/CEE.
Finally, they are based on research experiences carried
out within the ample stream of the ecological research at
the landscape scale, aimed at the investigation of the
implications (from the ecological, planning and
management perspectives) of complex ecological systems
hierarchical nature
II. Selvicoltura dei cedui e conservazione biologica: la costruzione di scenari ipotetici
No full textISI Master list(http://scientific.thomsonreuters.com/)
Periodico a diffusione europea ed extraeuropea
Argomenti trattati: selvicoltura, ecologia forestale, gestione forestale sostenibile, genetica forestale.
REFEREE
III. Ipotesi sugli esiti a medio-lungo termine della gestione forestale attuale sulla conservazione della biodiversità
No full textStarting from the
consideration emerged form the previous phases (MAIROTA et al. and MAIROTA and PIUSSI this volume) a posterior landscape ecological
analysis was carried out in order to assess the consequences of an actual forest management plan. The same set of spatial scale was
adopted, even though the focus was on the lower three levels of the hierarchy of the patchiness, birds were again used as bioindicators
and a GIS was created on purpose for the management estate studied. The analysis was extended in time up to the year 2042 when
the interventions, as scheduled and implemented by 2005, are likely to infl uence both the single stand and the resultant spatial mosaic.
Landscape confi guration change was examined at the three levels of the hierarchy using data at the patch to compute a few landscape
pattern indices. To compare the ex ante and the ex post situations descriptive statistics applied. Effects on biodiversity were qualitatively
assessed by means of the verifi cation of the fulfi lment of the habitat needs, in terms of habitat availability, of a set of bird species
specialised or dependent on forest habitat types, in both situations. A higher degree of landscape heterogeneity (due to the increase of
both aggregation and contrast) at the management level is to be expected by the implementation of the forest management plan. As
the management level is crucial for habitat selection for birds, speaking in general terms, such effects do not appear as detrimental for
conservation purposes. However it has to be taken into an account that the implementation of this very management plan is also likely to
produce a relatively homogeneous pattern as far as age of forest stands is concerned which does not seem to favour the viability of local
populations of a few among the bird species considered. It is suggested that these and other issues emerging from this analysis are taken
into an account when a new plan will be compiled in order to both avoid management anomalies and to better harmonise silviculture and
conservation instances. The approach adopted is consistent with both the principles of “wise forest management in Europe” (ANDERSSON
2003) and of “adaptative management” (FEMAT)
Long-term investigations in a strict forest reserve in the eastern Italian Alps: spatio-temporal origin and development in two multi-layered subalpine stands
No full text1 Part of the forest reserve established in Paneveggio Forest (Trento, Italy) in 1992 has been allowed to evolve without human intervention. Inside this reserve, two 1-ha long-term monitoring plots were established in subalpine multi-layered forest stands.
2 To investigate the origin, spatio-temporal development and disturbance history of these plots, the present study combined dendroecological tree ring analysis with historical evidence.
3 One stand (VB3) had an uneven-aged population in which the oldest trees were more than 400 years old. Regeneration has been continuous both in time and space over the last three centuries, during which time the stand has been affected regularly by disturbances. This supports the information from historical documents, suggesting that a selection system was carried out in this area.
4 The second stand (BDO) also had an uneven-aged population, with trees up to 397 years old. Although this plot too had been affected quite regularly by disturbances, massive regeneration occurred only after 1920, suggesting that the land might previously have been exploited as pasture.
5 Despite their relatively similar structures, the two plots developed in entirely different ways. Our study confirmed that biological data can be used to identify the occurrence and intensity of prior localized disturbances in forest stands, but the precise causes of the disturbances can be determined only by comparing biological data and historical records
Relatioships between bird distribution and landscape patterns at scales relevant to forest management
No full textStructure and stand development in four subalpine forest stand in the Eastern Italian Alps (Paneveggio, TN)
No full textGESTIONE DEL BOSCO E CONSERVAZIONE DELLA BIODIVERSITA': L'ANALISI ECOPAESISTICA APPLICATA A TERRITORI BOSCATI DELLA TOSCANA MERIDIONALE
Full text linkThis research, developed for a wooded area of Southern Toscana with both the evergreen and deciduous broadleaves woods, aims to
show the consequences of coppice management on biodiversity and to suggest a methodology useful to foster biological conservation.
An analysis of landscape spatial confi guration was carried out according to principles of landscape ecology and using birds as indicators,
by means of already available data describing this territory. The connection between the territory and biodiversity has been analysed at
different spatial scales to understand if the perception limits of wooded land and their changes, caused by implementation of forestry
strategies by a forest technician can be analogous to that of birds. Scenarios were built according to different constrains applied to management
to estimate the impact of different utilisation criteria on resources spatial pattern and therefore on biodiversity. These criteria
were then tested in a public estate managed according to a forest management plan. The most relevant conclusions of this research can
be summarised as follows:
1. at a regional level the Colline Metallifere territory is important for establishing ecological continuity. Forestry and ecological planning
should always approach the territory at different scales;
2. structural heterogeneity, for this case study, affects biodiversity in an apparently contradictory way. The management criteria adopted
favour bird species linked to high forest environment but are disadvantageous to species linked to open ground. Forest policy of past
decades leading to reforestation of former fi elds and pastures, rural depopulation inducing the secondary succession on abandonedfarmland and longer coppice rotations resulted in a strong reduction of open areas. These are important habitats for birds, which all
over the Mediterranean area are menaced;
3. growth processes cause structural changes at the stand level and therefore mosaics originated by different stand structures can be
considered as “fragile”. Changes in the landscape due to these processes increase homogeneity and therefore may act on biodiversity
in a negative way;
4. several limitations adopted in building the scenarios correspond to rules already adopted in standard management plans, which do
not take biodiversity specifi cally into consideration;
5. empirical data on biodiversity collected in coppices, which could support or reject these hypotheses, are lacking; fi eld research is
mostly needed;
6. different behaviour of various bird species in the coppice habitat show the need to adopt strict and clear concepts regarding indicator
species or umbrella species and to avoid generic statements about “fauna”, “birds” or “habitat” to evaluate biodiversity
- …
