First basin-wide experimental results on N2 fixation in the open Mediterranean Sea (Articolo in rivista)

Type
Label
  • First basin-wide experimental results on N2 fixation in the open Mediterranean Sea (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1029/2009GL041635 (literal)
Alternative label
  • Ibello V. (1); Cantoni C. (2); Cozzi S. (2); Civitarese G. (1) (2010)
    First basin-wide experimental results on N2 fixation in the open Mediterranean Sea
    in Geophysical research letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ibello V. (1); Cantoni C. (2); Cozzi S. (2); Civitarese G. (1) (literal)
Pagina inizio
  • L03608 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • doi:10.1029/2009GL041635 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.agu.org/journals/gl/ (literal)
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  • 37 (literal)
Rivista
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  • 5 (literal)
Note
  • Google Scholar (literal)
  • ISI Web of Science (WOS) (literal)
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  • (1) Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Trieste, Italy (2) Istituto di Scienze Marine, Consiglio Nazionale delle Ricerche, Trieste, Italy (literal)
Titolo
  • First basin-wide experimental results on N2 fixation in the open Mediterranean Sea (literal)
Abstract
  • The Mediterranean Sea presents several biogeochemical anomalies compared to the global ocean. An unbalanced N budget, high nitrate/phosphate ratios in subsurface waters and low 15N/14N ratios in particulate and dissolved nitrogen suggest a significant occurrence of N2 fixation. This study presents, for the first time, a basin-wide overview of direct measurements of N2 fixation, with values in the North Atlantic for comparison, during late spring 2007. Very low N2 fixation rates (0.052 ± 0.031 nmols N l-1d-1) were observed in all sub-regions of the Mediterranean, in contrast to the higher values measured in the North Atlantic (0.300 ± 0.115 nmols N l-1d-1). Higher phosphorus (inorganic or organic) concentrations were not associated with higher N2 fixation rates. Low 15N/14N ratios in particulate organic nitrogen (from -2.10 to +4.11?), associated with low N2 fixation rates, suggest that other N sources, such as atmospheric inputs, fuel the Mediterranean ecosystem. Citation: Ibello, V., C. Cantoni, S. Cozzi, and G. Civitarese (2010), First basin-wide experimental results on N2 fixation in the open Mediterranean Sea, Geophys. Res. Lett., 37, L03608, doi:10.1029/2009GL041635. (literal)
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