Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloHigh export of nitrogen and dissolved organic carbon from an Alpine glacier (Indren Glacier, NW Italian Alps)
Anno di pubblicazione2019
Autore/iNicola Colombo, Daniele Bocchiola, Maria Martin, Gabriele Confortola, Franco Salerno, Danilo Godone, Michele Eugenio D'Amico, Michele Freppaz
Affiliazioni autoriDepartment of Agricultural, Forest and Food Sciences, University of Turin, Largo Paolo Braccini, 2, 10095 Grugliasco, Italy 2 Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo DA Vinci, 32, 20133 Milan, Italy 3 CNR-IRSA (National Research Council-Water Research Institute), Via del Mulino, 19, 20047 Brugherio, Italy 4 CNR-IRPI (National Research Council-Research Institute for Geo-Hydrological Protection), Strada delle Cacce, 73, 10135 Turin, Italy 5 Research Center on Natural Risk in Mountain and Hilly Environments, NatRisk, University of Turin, Largo Paolo Braccini, 2, 10095 Grugliasco, Italy
Autori CNR e affiliazioni
  • inglese
AbstractMountain glaciers can export large amounts of nitrogen (N) and carbon (C) to downstream aquatic ecosystems. To date, however, the number of studies that analysed concentrations and fluxes of N forms and dissolved organic carbon (DOC) from glaciers in the European Alps and worldwide is limited, given the high complexity of data gathering in harsh high-elevation environments. In this work, we rely upon new, unexploited data from field campaigns pursued during 2012-2015 at high elevations (> 3000 m a.s.l.) of the Indren Glacier (NW Italian Alps) to (1) develop glacio-hydrological modelling and stream flow estimates within a heavily glacier-fed catchment, (2) provide N forms and DOC concentrations and estimated fluxes in meltwater, and (3) provide possible explanations of cryospheric control upon water chemistry. Water and soil samples were also collected at two lower-elevation sites along the glacial stream to investigate the downstream variability of N forms and DOC. Nitrate-N, dissolved organic nitrogen, and DOC concentrations (0.21 ± 0.12, 0.19 ± 0.14, 1.16 ± 0.63 mg L-1, respectively) and yields (220, 210, 1279 kg km-2 year-1, respectively) were among the highest considering other glaciated areas of the globe, probably due to high atmospheric N and C depositions. Limited effect of soil on water characteristics was found and attributed to the reduced soil development in recently deglaciated areas (after the Little Ice Age), thus underlining the role of glacier melting in determining N and C dynamics in high-elevation, Alpine surface waters.
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RivistaAquatic sciences (Electron. ed.)
Attiva dal 1997
Editore: Birkhäuser - Basel
Paese di pubblicazione: Svizzera
Lingua: inglese
ISSN: 1420-9055
Titolo chiave: Aquatic sciences (Electron. ed.)
Titolo proprio: Aquatic sciences. (Electron. ed.)
Titolo abbreviato: Aquat. sci. (Electron. ed.)
Titolo alternativo: AS (Electron. ed.)
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Stato della pubblicazionePublished version
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Parole chiaveGlacier, Dissolved organic carbon, Nitrogen, Nitrate, Water chemistry, Soil
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Strutture CNR
  • IRPI — Istituto di ricerca per la protezione idrogeologica
  • IRSA — Istituto di ricerca sulle acque
Moduli/Attività/Sottoprogetti CNR
  • TA.P05.010.001 : Tecniche e tecnologie per il monitoraggio dei parametri che caratterizzano le evoluzioni morfologiche di alvei e versanti instabili.
  • DTA.AD003.141.001 : Sviluppo sistemi monitoraggio innovativi
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