Coarse woody debris, forest structure and regeneration in the Valbona Forest Reserve, Paneveggio, Italian Alps

Motta, Renzo; Berretti, Roberta; Lingua, Emanuele; Piussi, P.

doi:10.1016/j.foreco.2006.08.007

Cited by 128 publications

(121 citation statements)

References 54 publications

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“…At each plot, forest and vegetation structure was described by measuring: species and diameter at 130 cm height (DBH) of all living trees with DBH > 2.5 cm; diameter, length and decay class (Motta et al, 2006) of all standing dead trees (snags) with DBH > 2.5 cm; length and decay class of logs (diameter > 5 cm, length > 100 cm) and stumps (diameter at the ground level > 2.5 cm, height < 130 cm); and, canopy cover by means of two hemispherical photographs taken from the plot center at a height of 80 cm from the ground (digital camera set at 400 ISO and F8). The images were masked for terrain and automatically thresholded (Nobis and Hunziker, 2005).…”

Section: Sampling Designmentioning

confidence: 99%

Effects of forest management on ground beetle diversity in alpine beech ( Fagus sylvatica L.) stands

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Vacchiano

Berretti

et al. 2014

Forest Ecology and Management

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Section: Sampling Designmentioning

confidence: 99%

Effects of forest management on ground beetle diversity in alpine beech ( Fagus sylvatica L.) stands

Negro

Vacchiano

Berretti

et al. 2014

Forest Ecology and Management

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“…Un altro aspetto importante da valutare è il grado di decomposizione del legno morto che sembra, infatti, influenzare le funzioni svolte e i tipi di organismi ospitati dalla necromassa (Motta et al, 2006). In particolare, la presenza contestuale di più classi di decomposizione all'interno del bosco è espressione dell'assenza prolungata di disturbi e questo parametro risulta strettamente correlato alla struttura specifica delle formazioni forestali vetuste (Burrascano et al, 2008).…”

Section: L'importanza Del Legno Mortounclassified

The role of monumental trees and old-growth forests in biodiversity conservation

Santo¹

2015

ifm

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1. INTRODUZIONE Da milioni di anni gli alberi svolgono funzioni fondamentali quali principali costituenti di ecosistemi terrestri, naturali e semi-naturali, caratterizzati da diversi gradi di complessità. Fra le numerose funzioni, nelle numerose strutture che compongono, come foreste, praterie arborate, filari, vegetazioni ripariali, ecc. essi offrono habitat diversificati, e rivestono quindi un ruolo chiave come riserve di biodiversità a tutti i livelli (Rajora e Mosseler, 2001; Giannini e Susmel, 2006). Oltre ad essere fondamentali "tasselli" di sistemi organizzati, alcuni individui arborei, specialmente quelli di dimensioni eccezionali e particolari condizioni vegetative, possono trasformarsi essi stessi in veri e propri ecosistemi. Negli apparati epigei ed ipogei di tali individui si caratterizzano sistemi di nicchie ecologiche, funzionali alla presenza, allo sviluppo e alla riproduzione di moltissime comunità e specie biologiche (Keddy e Drummond, 1996).Sono innumerevoli le interazioni ecologiche che possono instaurarsi nella sfera di influenza di quello che può essere considerato, a tutti gli effetti, "l'ecosistema albero". Non è peraltro possibile in questo contesto, esaminare in maniera specifica tutti i gruppi di organismi che "gravitano" dentro e intorno a questo

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“…The separation of snags from logs was established at a 45 • angle. Volumes for non-broken snags were calculated according to methods described in Motta, Berretti et al (2006). The decay stage (Tab.…”

Section: Cwd (Coarse Woody Debris)mentioning

confidence: 99%

Stand and coarse woody debris dynamics in subalpine Norway spruce forests withdrawn from regular management

et al. 2010

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Abstract• We studied structural characteristics, amount and quality of coarse woody debris (CWD), intensity of competition and mortality in two subalpine Norway spruce stands withdrawn from regular management. The stands, that we measured twice (in 1993 and 2005), have similar age and structure, but a different time has elapsed since the last silvicultural treatments (respectively 22 and about 55 y).• The main purposes were to analyze the current stage of development as compared to the old-growth one and to highlight the legacies of past management.• Although relatively old, the first plot (Valbona 1) was at the end of the pole stage. CWD was low in volume and was mainly of man-made origin (stumps). A recent thinning from below has reduced density-dependent competition and delayed the development of old-growth characteristics. The second plot (Valbona 2a) was at the beginning of the transition stage, with density-dependent and allogenic mortality both active at the same time. CWD volume was higher in plot Valbona 2a than in Valbona 1, but neither was comparable yet to the reference old-growth sites from Central Europe, both in quantity and in quality (e.g., decay rate continuity).• The effects of the past management were: (1) reducing the quality and quantity of the CWD, (2) alleviating competition, (3) increasing resistance to minor disturbances and, as a consequence, (4) delaying the development processes.• In mature or overmature subalpine Norway spruce stands withdrawn from regular management many decades are necessary to develop old-growth characteristics and a longer period of time is necessary to reach a true old-growth stage.

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Coarse woody debris, forest structure and regeneration in the Valbona Forest Reserve, Paneveggio, Italian Alps

Cited by 128 publications

References 54 publications

Effects of forest management on ground beetle diversity in alpine beech ( Fagus sylvatica L.) stands

Effects of forest management on ground beetle diversity in alpine beech ( Fagus sylvatica L.) stands

The role of monumental trees and old-growth forests in biodiversity conservation

Stand and coarse woody debris dynamics in subalpine Norway spruce forests withdrawn from regular management

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