publication . Other literature type . Article . 2016

Ammonium and nitrite oxidation at nanomolar oxygen concentrations in oxygen minimum zone waters

Bristow, Laura A.; Dalsgaard, Tage; Tiano, Laura; Mills, Daniel B.; Bertagnolli, Anthony D.; Wright, Jody J.; Hallam, Steven J.; Ulloa, Osvaldo; Canfield, Donald E.; Revsbech, Niels Peter; ...
Open Access English
  • Published: 06 Sep 2016
  • Publisher: National Academy of Sciences
  • Country: Philippines
Abstract
<jats:p>A major percentage of fixed nitrogen (N) loss in the oceans occurs within nitrite-rich oxygen minimum zones (OMZs) via denitrification and anammox. It remains unclear to what extent ammonium and nitrite oxidation co-occur, either supplying or competing for substrates involved in nitrogen loss in the OMZ core. Assessment of the oxygen (O<jats:sub>2</jats:sub>) sensitivity of these processes down to the O<jats:sub>2</jats:sub> concentrations present in the OMZ core (&lt;10 nmol⋅L<jats:sup>−1</jats:sup>) is therefore essential for understanding and modeling nitrogen loss in OMZs. We determined rates of ammonium and nitrite oxidation in the seasonal OMZ off ...
Subjects
free text keywords: Biological Sciences, Multidisciplinary, Nitrogen fixation, Anammox, Chemistry, Oxygen, chemistry.chemical_element, Ammonium, chemistry.chemical_compound, Denitrification, Inorganic chemistry, Nitrogen, Environmental chemistry, Nitrite, Oxygen minimum zone
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