Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Nitrate concentrations and source identification in a Mediterranean river system |
| Abstract | As most of the rural areas inMediterraneanRegion, the Celone river basin (Apulia, Italy) is characterized by diffuse pollution from agriculture. Nutrient export from terrestrial ecosystem to the river is controlled by hydrological processes and nutrient input frompoint and non-point sources. In the present paper, anthropogenic nitrogen input and the riverine export of nitrate-N (N-NO3) were quantified through several survey campaigns, continuousmeasures of streamflow and discrete determinations of concentrations. A different frequency for water sampling was used, respectively, during floods and during normal- or low-flow state. Nitrate-N concentrations in surface waters were found to vary considerably across the seasons. The riverine N-NO3 export was estimated to be about 14 kg N ha-1 year-1. Major N inputs derived from fertilizers and animal manure correspond to 68.2 and 24 kg N ha-1 year-1, respectively. Nitrate-N fluxes in streamduring flood events (21 days) accounted for about 63% of the annual loading. This study clearly demonstrates the importance of flood event contributions to the annual nutrient loading delivered to the reservoir and that more efficient fertilizers and management practices are needed to reduce N input. |
| Source | Rendiconti lincei. Scienze fisiche e naturali 28, pp. 1–11 |
| Keywords | Anthropogenic activities Temporary river Nitrate-N concentrations Nitrate load estimation |
| Journal | Rendiconti lincei. Scienze fisiche e naturali |
| Editor | Springer Verlag Italia, Milano, Italia |
| Year | 2017 |
| Type | Articolo in rivista |
| DOI | 10.1007/s12210-016-0593-8 |
| Authors | de Girolamo A.M.; D'Ambrosio E.; Pappagallo G.; Rulli M.C.; Lo Porto A. |
| Text | 370899 2017 10.1007/s12210 016 0593 8 Scopus 2 s2.0 85009167991 Anthropogenic activities Temporary river Nitrate N concentrations Nitrate load estimation Nitrate concentrations and source identification in a Mediterranean river system de Girolamo A.M.; D Ambrosio E.; Pappagallo G.; Rulli M.C.; Lo Porto A. Water Research Institute, National Research Council, CNR IRSA, Viale F. De Blasio N. 5, Bari, 70132, Italy; Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza L. Da Vinci, 32, Milan, 20133, Italy As most of the rural areas inMediterraneanRegion, the Celone river basin Apulia, Italy is characterized by diffuse pollution from agriculture. Nutrient export from terrestrial ecosystem to the river is controlled by hydrological processes and nutrient input frompoint and non point sources. In the present paper, anthropogenic nitrogen input and the riverine export of nitrate N N NO3 were quantified through several survey campaigns, continuousmeasures of streamflow and discrete determinations of concentrations. A different frequency for water sampling was used, respectively, during floods and during normal or low flow state. Nitrate N concentrations in surface waters were found to vary considerably across the seasons. The riverine N NO3 export was estimated to be about 14 kg N ha 1 year 1. Major N inputs derived from fertilizers and animal manure correspond to 68.2 and 24 kg N ha 1 year 1, respectively. Nitrate N fluxes in streamduring flood events 21 days accounted for about 63% of the annual loading. This study clearly demonstrates the importance of flood event contributions to the annual nutrient loading delivered to the reservoir and that more efficient fertilizers and management practices are needed to reduce N input. 28 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85009167991 origin=inward Nitrate concentrations and source identification in a Mediterranean river system ex_Art Accademia Lincei.pdf Articolo in rivista Springer Verlag Italia 2037 4631 Rendiconti lincei. Scienze fisiche e naturali Rendiconti lincei. Scienze fisiche e naturali Rend. lincei, Sci. fis. nat. Rendiconti lincei. Scienze fisiche e naturali. Rendiconti lincei ersiliadambrosio D AMBROSIO ERSILIA antonio.loporto LO PORTO ANTONIO annamaria.degirolamo DE GIROLAMO ANNA MARIA giuseppe.pappagallo PAPPAGALLO GIUSEPPE |