| Abstract | Concern about the potential effects of Nitrogen deposition on forests embraces almost all the forest ecosystem's compartments, including vegetation, soil biota, soil and soil solution, and run-off. Much emphasis was put on the role of N as a (i) factor stimulating growth, thus enhancing Carbon uptake; (ii) as a possible cause of nutritional imbalance, thus causing possible problems with tree health because of altered susceptibility to pests and disease; and (iii) as a factor altering the composition and richness of ground vegetation. In the frame of the Italian monitoring programme CONECOFOR, a study was undertaken to investigate the effect of actual N deposition and exceedance of N Critical Load (CL) on the forest vegetation at selected forest ecosystems spread across a range of environmental condition and deposition leads. At these plots atmospheric deposition have been measured over the past 15 years together with a suite of other variables, including meteorology, ozone, soil- and foliar nutrition, species diversity, tree health and growth. The study was conducted ad follows: firstly, the Simple Mass Balance (SMB) method was used to estimate CL and calculate exceedance with respect to the actual deposition lead; secondly, a set of predictors and response variables was identified. Thirdly, sub-sets of predictors were used to investigate effects of N deposition on the nutritional status of the plots and to model the response variable of interest; finally, the model's residuals (modeled-measured) were evaluated, in order to detect relationships between the response and the N deposition and CL exceedances. Results of this study will be presented and in terms of N deposition, CL exceedances, and estimated effects on tree health, growth and species diversity. |
| Authors | Marchetto, Aldo; Ferretti, Marco; Arisci, Silvia; Bussotti, Filippo; Calderisi, Marco; Canullo, Roberto; Carnicelli, Stefano; Cecchini, Giuseppe; Fabbio, Gianfranco; Matteucci, Giorgio; Pompei, Enrico; Salvati, Luca |
| Text | 221001 2012 Nitrogen deposition CONECOFOR Forest Carbon uptake Nitrogen deposition in forest sites in Italy effects on health, growth and diversity of forest vegetation in Italy Marchetto, Aldo; Ferretti, Marco; Arisci, Silvia; Bussotti, Filippo; Calderisi, Marco; Canullo, Roberto; Carnicelli, Stefano; Cecchini, Giuseppe; Fabbio, Gianfranco; Matteucci, Giorgio; Pompei, Enrico; Salvati, Luca CNR ISE, Pallanza Verbani; TerraData environmetrics, Via L. Bardelloni 19, 58025 Monterotondo Marittimo GR , Italia CNR ISE, Pallanza Verbania; Dipartimento di Biotecnologie Agrarie, Universita` degli Studi di Firenze, Piazzale delle Cascine 24, 50144 Firenze; TerraData environmetrics, Via L. Bardelloni 19, 58025 Monterotondo Marittimo GR , Italia; Dipartimento di Scienze Ambientali, sezione Botanica ed Ecologia, Laboratorio di ecologia delle popolazioni vegetali, Universita degli Studi di Camerino, Via Pontoni 5, 62032 Camerino MC , Italia; Dipartimento delle Scienze delle Produzioni Vegetali del Suolo e dell Ambiente Agroforestale, Sezione di Scienze del Suolo e Nutrizione della Pianta, Universita di Firenze, Piazzale Cascine 14, 500144 Firenze, Italy; Dipartimento delle Scienze delle Produzioni Vegetali del Suolo e dell Ambiente Agroforestale, Sezione di Scienze del Suolo e Nutrizione della Pianta, Universita di Firenze, Piazzale Cascine 14, 500144 Firenze, Italy; CRA Centro di ricerca per la selvicoltura, Viale Santa Margherita 80, 52100 Arezzo, Italia; CNR ISAFoM, Cosenza; Corpo Forestale dello Stato Divisione 6a, Via Carducci 5, 00187 Roma, Italia; CRA Centro di Ricerca per lo Studio delle relazioni fra pianta e suolo, Via della Navicella 2 4, 00184 Roma, Italia ID_PUMA cnr.ise/2012 B6 003 XXII Congresso della Societa Italiana di Ecologia Ecologia e gestione ambientale S.It.E. Alessandria 10 13 Settembre 2012 Nazionale Concern about the potential effects of Nitrogen deposition on forests embraces almost all the forest ecosystem s compartments, including vegetation, soil biota, soil and soil solution, and run off. Much emphasis was put on the role of N as a i factor stimulating growth, thus enhancing Carbon uptake; ii as a possible cause of nutritional imbalance, thus causing possible problems with tree health because of altered susceptibility to pests and disease; and iii as a factor altering the composition and richness of ground vegetation. In the frame of the Italian monitoring programme CONECOFOR, a study was undertaken to investigate the effect of actual N deposition and exceedance of N Critical Load CL on the forest vegetation at selected forest ecosystems spread across a range of environmental condition and deposition leads. At these plots atmospheric deposition have been measured over the past 15 years together with a suite of other variables, including meteorology, ozone, soil and foliar nutrition, species diversity, tree health and growth. The study was conducted ad follows firstly, the Simple Mass Balance SMB method was used to estimate CL and calculate exceedance with respect to the actual deposition lead; secondly, a set of predictors and response variables was identified. Thirdly, sub sets of predictors were used to investigate effects of N deposition on the nutritional status of the plots and to model the response variable of interest; finally, the model s residuals modeled measured were evaluated, in order to detect relationships between the response and the N deposition and CL exceedances. Results of this study will be presented and in terms of N deposition, CL exceedances, and estimated effects on tree health, growth and species diversity. Nitrogen deposition in forest sites in Italy ISE_2012_B6_003_Puma.pdf Abstract in atti di convegno ARISCI SILVIA aldo.marchetto MARCHETTO ALDO giorgio.matteucci MATTEUCCI GIORGIO TA.P02.014.002 Impatto dei cambiamenti globali sugli ecosistemi acquatici |
