http://http://dspace.unitus.it:80 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. 2013-06-20T09:22:50Z http://hdl.handle.net/2067/2114 Title: ForestBIOTA data on deadwood monitoring in Europe Authors: Travaglini, Davide; Barbati, Anna; Chirici, Gherardo; Lombardi, Fabio; Marchetti, Marco; Corona, Piermaria Abstract: Deadwood is a key ecological factor in forest ecosystems. Its occurrence is fundamental since it represents a microhabitat for hundreds of species of invertebrates, fungi, bryophytes, lichens, amphibians, small mammals and birds. In recent years, deadwood has been recognized as a relevant indicator for the assessment and monitoring of forest biodiversity. In this paper the methodology for surveying woody necromass proposed by the ForestBIOTA project under Regulation (EC) No 2152/ 2003 (Forest Focus) is described. The amount of deadwood found on 91 Intensive Monitoring Level II plot of the EU and ICP Forest condition monitoring programme range from 0 to 258 m3 ha71. In the examined areas, total deadwood volume does not differ significantly among forest types, due to the high intra-type variability. On the other hand, its distribution between coarse and fine necromass and among necromass components is highly dependent on forest types. Description: L'articolo è disponibile sul sito dell'editore www.tandf.co.uk/journals/ 2006-12-31T23:00:00Z http://hdl.handle.net/2067/1902 Title: Deadwood in forest stands close to old-growthness under Mediterranean conditions in the Italian Peninsula Authors: Corona, Piermaria; Lombardi, Fabio; Chirici, Gherardo; Marchetti, Marco; Tognetti, Roberto; Lasserre, Bruno; Barbati, Anna; Ferrari, Barbara; Di Paolo, Silvia; Giuliarelli, Diego; Iovino, Francesco; Nicolaci, Antonino; Bianchi, Livio; Maltoni, Alberto; Travaglini, Davide Abstract: Considering that indicators of old-growth features can vary across the European ecoregions, this paper provides some results to identify the distinctive traits of old-growth forests in the Mediterranean ecoregion. Deadwood occurrence as indicator of naturalness is investigated in some remote forest areas that have developed in absence of anthropogenic disturbance over the past few decades. Eleven study sites across the Italian peninsula were elected and records of deadwood were carried out in 1-ha size plots. Deadwood volume, deadwood types and decay stages were inventoried in the selected sites. The amounts of deadwood indicate a large variability among the investigated forest stands: the total volume ranged between 2 and 143 m3ha-1, with an average of 60 m3ha-1. Lying deadwood is the most abundant component of deadwood in the investigated forests, due to the natural mortality occurring in the stands in relation to the processes established in the last decades. On the contrary, stumps are the less represented type of deadwood in almost all the study areas. All the decay classes are present in each study site. The amount of deadwood in Southern Europe, even if lower than that reported for North and Central European countries, could have a different meaning due to the faster decay occurring in Mediterranean forest ecosystems. For this reason, old-growth features and the characteristics of each indicator should be framed and referred to well-defined climatic and biogeographic contexts. Distinctively, under the conditions here investigated, three main deadwood features prove to characterize forest stands close to old-growthness: a ratio of dead to living wood not lower than 10%; lying deadwood much more abundant than the standing one; large range of deadwood size and decay classes across all the deadwood components. 2009-12-31T23:00:00Z http://hdl.handle.net/2067/2138 Title: Aspects of biological diversity in the CONECOFOR plots. V. Deadwood surveying experiments in alpine and mediterranean forest ecosystems Authors: Travaglini, Davide; Mason, Franco; Lopresti, Massimo; Lombardi, Fabio; Marchetti, Marco; Chirici, Gherardo; Corona, Piermaria Abstract: In recent years, deadwood has become more and more considered as indicator in the assessment of the biodiversity and naturalness of forest ecosystems. Its occurrence, in an appropriate proportion according to forest use, is fundamental for the maintenance of biological diversity, since it represents a microhabitat for hundred of species of invertebrates, fungi, bryophytes, lichens, amphibians, small mammals and birds. Having acknowledged its importance in forest coenoses, quantification of deadwood components in a given habitat, in relation to forest type and type of management, becomes essential. In our study, different survey designs were tested and compared for assessing deadwood components: stumps, lying coarse wood pieces and lying fine wood pieces. As expected, the experiments carried out show that sample-based estimates of ground necromass tend to be more accurate as the quantity of necromass present within the area to be surveyed and the size of the sampling units increase. The adoption of four 7-m-radius subplots in a systematic configuration has proved to be a good compromise between accuracy and survey costs for volume estimation of stumps and lying wood pieces within the examined experimental forest stand plot.; Esperienze sperimentali di rilevamento della necromassa legnosa in cenosi forestali alpine e mediterranee. Negli ultimi anni, il legno morto è sempre più considerato un indicatore per valutare la biodiversità e la naturalità di un sistema forestale. La sua presenza, nelle opportune proporzioni commisurate anche alle finalità di coltivazione della foresta, è fondamentale per il mantenimento della diversità biologica, rappresentando il microhabitat per centinaia di specie di invertebrati, funghi, briofite, licheni, anfibi, piccoli mammiferi ed uccelli. Riconosciuta l’importanza della necromassa legnosa nelle cenosi forestali, diviene fondamentale la sua quantificazione in un determinato ambiente, distinguendone la presenza in funzione dei tipi forestali e delle forme di gestione. A tal fine, in questo studio sono state sperimentate e valutate comparativamente differenti strategie di rilievo di alcune componenti della necromassa legnosa a terra: ceppaie, rami grossi e rami fini. Come atteso, la sperimentazione mostra che la stima della necromassa grossolana e fine a terra tende ad essere più accurata all’aumentare della quantità di legno morto presente e all’aumentare delle dimensioni della superficie di rilevamento. Nelle condizioni esaminate, l’adozione di quattro subplots di 7 m di raggio in configurazione sistematica è risultato un buon compromesso tra accuratezza e costi di indagine per la stima del volume delle ceppaie e del legno morto a terra. 2005-12-31T23:00:00Z http://hdl.handle.net/2067/2213 Title: Stand structure attributes in potential Old-Growth Forests in the Apennines, Italy Authors: Calamini, Gianfranco; Maltoni, Alberto; Travaglini, Davide; Iovino, Francesco; Nicolaci, Antonino; Menguzzato, Giuliano; Corona, Piermaria; Ferrari, Barbara; Di Santo, Daniele; Chirici, Gherardo; Lombardi, Fabio Abstract: The aim of this paper is to provide early feedback on stand structure attributes in Italian Apennines forests that could be considered Old Growth Forests in the Mediterranean Eco-Region. Few data are nowadays available relating to this Region. 10 forest reserves across the Apennines were selected and a census of trees and structural parameters was conducted in permanent plots (0.16-1.0 ha), one plot for each selected forest stand. Dimensional and structural characters indicate a large variability among the investigated forest stands. The considered parameters are compared with those reported for other European countries. Old growth features and characteristics of each indicator should be revised and referred to the particular climatic and biogeographic context. The chosen forest study sites are to be considered old if related to common Apennine stands but, in some cases, their development stage is not so close to “truly” Old Growth Forest. Permanent plots allow future investigations on dynamic processes leading to real Old Growth Mediterranean Forests in Italian Apennines. 2010-12-31T23:00:00Z http://hdl.handle.net/2067/2294 Title: Stima dei flussi di carbonio degli ecosistemi forestali italiani attraverso dati telerilevati ed ancillari Authors: Chirici, Gherardo; Chiesi, Marta; Pasqui, Massimiliano; Corona, Piermaria; Salvati, Riccardo; Barbati, Anna; Lombardi, Fabio; Maselli, Fabio Abstract: Le foreste rivestono un ruolo fondamentale nell’ambito dei cicli bio-geo-chimici di molti elementi quali, tra gli altri, azoto e carbonio. In particolare possono svolgere l’importante funzione di assorbitori di carbonio, sottraendo CO2 dall’atmosfera. Per questo, ed in vista dei cambiamenti climatici in atto sul nostro pianeta, un obiettivo importante è quello di quantificare l’effettivo accumulo di carbonio stoccato nelle foreste italiane. A questo ambisce il progetto FIRB C_FORSAT finanziato dal MIUR fino al 2013. Tra le metodologie proposte per raggiungere tale scopo (tecniche di eddy covariance, immagini da satellite e modelli bio-geochimici), quelle basate sull’impiego di modelli di simulazione dell’ecosistema unite all’utilizzo di dati telerilevati risultano le più promettenti. Esse infatti uniscono la possibilità offerta dai modelli di stimare tutti i processi dell’ecosistema (GPP, NPP ed NEE) basandosi sulla conoscenza delle specie analizzate e dell’ambiente in cui si trovano con quella di ottenere informazioni su vasta scala spaziale e con alto grado di ripetizione grazie all’uso di dati tele rilevati. A questo scopo il modello bio-geochimico BIOME-BGC opportunamente calibrato e validato per le principali classi forestali italiane appare particolarmente utile. L’utilizzo del modello in forma spazializzata su base nazionale richiede però la disponibilità di una vasta disponibilità di strati informativi. Tra questi i dati meteorologici giornalieri sono particolarmente critici, in quanto non risultano ancora disponibili sul territorio nazionale. Il contributo richiama brevemente la metodologia utilizzata nel progetto e si sofferma in particolare sull’approccio individuato per la generazione della banca dati meteo spazializzata ed il suo utilizzo per simulare il comportamento della macchia mediterranea.; Forests play an important role within numerous bio-geo-chemical cycles among which those of nitrogen and carbon. In particular, forests can behave as carbon sink by removing CO2 from the atmosphere. For this reason, and in view of global climate changes, it is important to quantify the amount of carbon stocked within Italian forest ecosystems. This is the objective of the FIRB project C_FORSAT financed by MIUR up to 2013. Among the available methodologies (eddy-covariance, remote sensing and bio-geo-chemical models), those based on the combined use of ecosystem simulation model and remotely sensed data are the most promising. They in fact enable to estimate all ecosystem processes (GPP, NPP and NEE) based on the knowledge of the species and the environment in which these live. Moreover, they offer the possibility to obtain spatial information with a high temporal frequency. The model BIOME-BGC is particularly useful to this aim after proper calibration and validation for the main Italian forest types. It requires numerous data layers, among which daily meteorological data are the most difficult to obtain for the whole national territory. This contribution summirezes the main methodological steps and focuses on the creation of a daily meteorological database, which is utilized to drive the simulation of Mediterranean macchia. Description: La pubblicazione è disponibile all'indirizzo http://www.attiasita.it/ASITA2011/indice_atti.html 2010-12-31T23:00:00Z