Increasing quantities of atmospheric anthropogenic fixed nitrogen entering the open ocean could account for up to about a third of the ocean's external (nonrecycled) nitrogen supply and up to ~3% of the annual new marine biological production, ~0.3 petagram of carbon per year. This input could account for the production of up to ~1.6 teragrams of nitrous oxide (N2O) per year.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/impacts-atmospheric-anthropogenic-nitrogen-open-ocean
[2] http://admin.indiaenvironmentportal.org.in/category/author/r-duce
[3] http://admin.indiaenvironmentportal.org.in/category/author/j-laroche
[4] http://admin.indiaenvironmentportal.org.in/category/author/k-altieri-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere-and-ozone-layer
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oceans-and-seas
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oxides-nitrogen-nox
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chemical-fertilisers
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/eutrophication
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-pollution