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Pubblicazioni Scientifiche
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Pubblicazioni per anno
Multi-taxon and forest structure sampling for identification of indicators and monitoring of old-growth forest
Blasi
,
Carlo
,
Marchetti
,
Marco
,
Chiavetta
,
U.
,
Aleffi
,
Michele
,
Audisio
,
P. Aldo
,
Azzella
,
Mattia Martin
,
Brunialti
,
Giorgio
,
Capotorti
,
Giulia
,
Del Vico
,
Eva
,
Lattanzi
,
Edda
,
Persiani
,
Anna Maria
,
Ravera
,
Sonia
,
Tilia
,
Agnese
,
Burrascano
,
Sabina
structural attributes
multi-taxon species lists
species co-occurrence
structure-based indicators
taxon-based indicators
Mostra abstract
The most commonly used old-growth forest indicators are structural attributes; nevertheless, they do not necessarily represent the biodiversity value of old-growth forests. The aim of this study is to analyse the relationships between species richness data of different taxa and structural indicators of old-growth and to identify taxonomic/functional groups, species and structural attributes that may be used as indicators of old growth. To achieve this goal we sampled forest structure, vascular plants, lichens, bryophytes, fungi, saproxylic beetles and birds in mature and old-growth stands in southern Italy. We calculated Spearman's correlation coefficients between species richness data and structural attributes. Analyses of indicator species, co-occurrences and two-way clusters were performed on the multi-taxonomic list. The group of vascular plants most significantly correlated with other groups in terms of species richness; furthermore, it displays the highest proportion of between-group co-occurrences. The resulting multi-taxonomic list of potential indicators may serve as an effective means of detecting and monitoring forest ecosystems; however, for this goal, structure-based indicators, such as forest structural attributes and vascular plant species composition, are of primary importance. © 2010 Società Botanica Italiana.
Linking taxonomical and functional biodiversity of saproxylic fungi and beetles in broad-leaved forests in southern Italy with varying management histories
Persiani
,
Anna Maria
,
Audisio
,
P. Aldo
,
Lunghini
,
Dario
,
Maggi
,
Oriana
,
Granito
,
Vito Mario
,
Biscaccianti
,
Alessandro Bruno
,
Chiavetta
,
U.
,
Marchetti
,
Marco
beetles
coarse woody debris
fungi
old-growth forest
saproxylic communities
taxonomical and functional biodiversity
trophic guilds
Mostra abstract
The fundamental ecological significance of deadwood decomposition in forests has been highlighted in several reviews, some conclusions regarding silviculture being drawn. Old-growth forests are natural centres of biodiversity. Saproxylic fungi and beetles, which are vital components of these ecosystems, occupy a variety of spatial and trophic niches. Fungal and beetle diversity on coarse woody debris (CWD) was analysed in 36 forest sites in the Cilento and Vallo di Diano National Park, Italy. The data were analysed by DCA and Spearman's rank correlation. The results provide empirical evidence of the existence of a pattern of joint colonization of the woody substrate by fungi and beetles, which includes an assemblage of reciprocal trophic roles within fungal/beetle communities. These organisms act together to form a dynamic taxonomical and functional ecosystem component within the complex set of processes involved in wood decay. The variables most predictive of correlations between management-related structural attributes and fungal/beetle species richness and their trophic roles for old-growth forest are: number of logs, number of decay classes and CWD total volume. Deadwood spatiotemporal continuity should be the main objective of forest planning to stop the loss of saproxylic fungal and insect biodiversity. © 2010 Società Botanica Italiana.