NDLI: Testing indicators of sustainable forest management on understorey composition and diversity in southern Italy through variation partitioning

Content Provider	Springer Nature Link
Author	Burrasca, S. Sabatini, F. M. Blasi, C.
Copyright Year	2010
Abstract	Tree species composition and stand structural complexity are valuable indicators of sustainable forest management. This article aims to investigate the relative influence of forest overstorey composition and structural attributes on understorey composition and diversity, taking into account also site characteristics and broad-scale environmental variables. We sampled vascular plant species composition and forest structure in 132 plots in the Cilento and Vallo di Diano National Park (southern Italy). Spearman’s non-parametric correlation coefficients were calculated between overstorey and understorey diversity indices, beech percentage, and altitude and environmental indices. A complete partitioning of the variation in understorey composition was then performed through canonical correspondence analysis considering four sets of variables: (1) overstorey composition, (2) structural attributes, (3) topography, and (4) landscape abiotic variables. Finally, we constructed a regression tree analysis of understorey species richness using the same explanatory variables. Understorey diversity indices were positively correlated with overstorey diversity indices and with environmental indices (i.e., light and soil heterogeneity). Overstorey and understorey diversity indices were negatively correlated with both altitude and the dominance of beech in the overstorey. Compositional variation was due primarily to overstorey composition and secondarily to structural attributes. Regression tree analysis revealed that altitude, overstorey species richness, and structural attributes play an important role in determining understorey species richness. According to our results, understorey composition and diversity are strongly related to overstorey composition and structural attributes. Indeed, the latter proved to be effective indicators of understorey characteristics in the study area.
Starting Page	829
Ending Page	841
Page Count	13
File Format	PDF
ISSN	13850237
Journal	Plant Ecology
Volume Number	212
Issue Number	5
e-ISSN	15735052
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-12-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Vascular plants Forest structure Forest management Variation partitioning Regression tree Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science

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