| Abstract | Nitrogen deficit or excess within ecosystems imply different problems. The shortage of this key nutrient strongly affects agricultural productions while its abundance ("too much of a good thing") determines water eutrophication and associated setbacks. At the beginning of 2014 a national initiative was launched to researchers dealing with nitrogen, including limnologists, ecologists, biologists, agronomists and hydrogeologists. The initiative (INN, Italian Nitrogen Network) consists in sharing a common methodology to evaluate the nitrogen budget at the watershed level. Specific meetings were organized to share and discuss a common method for data collection and budget calculation. Most necessary data can be free downloaded from national statistical databases and have the municipality resolution. They include agricultural productions in terms of surfaces, typologies and amounts of farmed animals. All input data are converted into nitrogen units by means of site-specific, appropriate coefficients. An inventory of input (n associated to manure, synthetic fertilizers deposition, biological fixation) and output terms (crop uptake, ammonia volatilization, denitrification in soils) is produced and a net budget is calculated across the agricultural lands. As for most Italian rivers water flows and hydrochemical data at the closing sections are available, N export from each basin can be computed and compared to the budget. This, together with detailed knowledge of accessory information (e.g. population density, land use, slopes, presence of wetlands, soil permeability) allows to infer about the system capacity to metabolize N loads and its relevance in planning appropriate management actions. At present some budgets are already available (Oglio, Mincio, Volano, Agogna, Parma, Secchia, Adda, Panaro), while others are in progress (Adige, Reno, Tevere, Scrivia, Alento, Lambro, Olona, Ticino, Enza, Crostolo, Arborea Plain, Venice Lagoon Basin). We present here the initiative, the aims, material and methods, the investigated watersheds and the perspectives. |
| Text | 319734 2014 Nitrogen Italian lakes INN Cross comparison of nitrogen sources, sinks and transport within river basins the Italian Nitrogen Network initiative INN Marco Bartoli; Elisa Soana; Alex Laini; Daniele Nizzoli; Monica Pinardi; Erica Racchetti; Ciro Gardi; Pierluigi Viaroli; Marco Acutis; Francesca Salmaso; Silvia Quadroni; Giuseppe Crosa; Alessandra De Marco; C. Demurtas; Pier Paolo Roggero; Elisa Sacchi; Nico Salmaso; Adriano Boscaini; Michela Rogora; Marco Trevisan; Luisa Stellato; Alessandro Spagni; Marco Vignudelli; Francesca Ventura; Paola Rossi; Micol Mastrocicco; Marco Petitta; Bruna Gumiero; Bruna Grizzetti; B. Boz; Elisa Anna Fano; Giuseppe Castaldelli Bartoli, Marco Department of Life Sciences, University of Parma, Italy; Soana, Elisa Department of Life Sciences, University of Parma, Italy; Laini, Alex Department of Life Sciences, University of Parma, Italy; Nizzoli, Daniele Department of Life Sciences, University of Parma, Italy; Pinardi, Monica Department of Life Sciences, University of Parma, Italy; Racchetti, Erica Department of Life Sciences, University of Parma, Italy; Gardi, Ciro Department of Life Sciences, University of Parma, Italy; Viaroli, Pierluigi Department of Life Sciences, University of Parma, Italy; Acutis, Marco Department of Plant Production, University of Milan, Italy; Salmaso, Francesca Department of theoretical and applied Sciences, University of Insubria, Italy; Quadroni, Silvia Department of theoretical and applied Sciences, University of Insubria, Italy; Crosa, Giuseppe Department of theoretical and applied Sciences, University of Insubria, Italy; De Marco, Alessandra ENEA Rome, Italy; Demurtas, C. Faculty of Agronomy, University of Sassari, Italy; Roggero, Pier Paolo Faculty of Agronomy, University of Sassari, Italy; Sacchi, Elisa Department of Earth and Environment Sciences, University of Pavia, Italy; Samlaso, Nico Associazione Edmund Mach FEM San Michele all Adige; Boscaini, Adriano Associazione Edmund Mach FEM San Michele all Adige; Rogora, Michela CNR ISE, Pallanza Verbania; Trevisan, Marco Faculty of Agronomical, food and environmental Sciences, Catholic University of Milan/Piacenza, Italy; Stellato, Luisa Department of physics and mathematics, second University of Naples, Italy; Spagni, Alessandro ENEA Bologna, Italy; Vignudelli, Marco Department of Agronomical Sciences, University of Bologna, Italy; Ventura, Francesca Department of Agronomical Sciences, University of Bologna, Italy; Rossi, Paola Department of Agronomical Sciences, University of Bologna, Italy; Mastrocicco, Micol Univerdsity of Ferrara, Italy; Petitta, Marco Department of Earth Sciences, University La Sapienza, Rome, Italy; Gumiero, Bruna Dept of Biological, Geological and Environmental Science BiGeA , University of Bologna, Italy; Grizzetti, Bruna JRC, Joint research Centre, Ispra, Italy; Boz, B. Freelance consultant, Feltre, Belluno, Italy; Fano, Elisa Anna Department of Life Sciences and Biotechnology, University of Ferrara, Italy; Castaldelli, Giuseppe Department of Life Sciences and Biotechnology, University of Ferrara, Italy Published version IP_PUMA cnr.ise/2014 B6 009. Acronimo titolo evento S.It.E. Pubblicato da Universita degli Studi di Ferrara S.It.E. XXIV Congresso della Societa Italiana di Ecologia L Ecologia oggi Responsabilita e Governance Ferrara 15 17 settembre 2014 Nazionale Contributo Nitrogen deficit or excess within ecosystems imply different problems. The shortage of this key nutrient strongly affects agricultural productions while its abundance too much of a good thing determines water eutrophication and associated setbacks. At the beginning of 2014 a national initiative was launched to researchers dealing with nitrogen, including limnologists, ecologists, biologists, agronomists and hydrogeologists. The initiative INN, Italian Nitrogen Network consists in sharing a common methodology to evaluate the nitrogen budget at the watershed level. Specific meetings were organized to share and discuss a common method for data collection and budget calculation. Most necessary data can be free downloaded from national statistical databases and have the municipality resolution. They include agricultural productions in terms of surfaces, typologies and amounts of farmed animals. All input data are converted into nitrogen units by means of site specific, appropriate coefficients. An inventory of input n associated to manure, synthetic fertilizers deposition, biological fixation and output terms crop uptake, ammonia volatilization, denitrification in soils is produced and a net budget is calculated across the agricultural lands. As for most Italian rivers water flows and hydrochemical data at the closing sections are available, N export from each basin can be computed and compared to the budget. This, together with detailed knowledge of accessory information e.g. population density, land use, slopes, presence of wetlands, soil permeability allows to infer about the system capacity to metabolize N loads and its relevance in planning appropriate management actions. At present some budgets are already available Oglio, Mincio, Volano, Agogna, Parma, Secchia, Adda, Panaro , while others are in progress Adige, Reno, Tevere, Scrivia, Alento, Lambro, Olona, Ticino, Enza, Crostolo, Arborea Plain, Venice Lagoon Basin . We present here the initiative, the aims, material and methods, the investigated watersheds and the perspectives. Cross comparison of nitrogen sources, sinks and transport within river basins the Italian Nitrogen Network initiative INN 2014_B6_009.pdf Abstract in atti di convegno michela.rogora ROGORA MICHELA TA.P02.014.002 Impatto dei cambiamenti globali sugli ecosistemi acquatici |
