All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone
<p>Oxygen minimum zones (OMZs), due to their large volumes of perennially deoxygenated waters, are critical regions for understanding how the interplay between anaerobic and aerobic nitrogen (<span class="inline-formula">N</span>) cycling microbial pathways affects the ma...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2023-06-01
|
| Series: | Biogeosciences |
| Online Access: | https://bg.copernicus.org/articles/20/2499/2023/bg-20-2499-2023.pdf |
| _version_ | 1797791496313765888 |
|---|---|
| author | J. C. Tracey J. C. Tracey A. R. Babbin E. Wallace X. Sun X. Sun K. L. DuRussel K. L. DuRussel C. Frey C. Frey D. E. Martocello III T. Tamasi S. Oleynik B. B. Ward |
| author_facet | J. C. Tracey J. C. Tracey A. R. Babbin E. Wallace X. Sun X. Sun K. L. DuRussel K. L. DuRussel C. Frey C. Frey D. E. Martocello III T. Tamasi S. Oleynik B. B. Ward |
| author_sort | J. C. Tracey |
| collection | DOAJ |
| description | <p>Oxygen minimum zones (OMZs), due to their large volumes of perennially deoxygenated waters, are critical regions for understanding how the interplay between anaerobic and aerobic nitrogen (<span class="inline-formula">N</span>) cycling microbial pathways affects the marine <span class="inline-formula">N</span> budget. Here, we present a suite of measurements of the most significant OMZ <span class="inline-formula">N</span> cycling rates, which all involve nitrite (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="dd9770d6620662f8636cc16fd90758f2"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00001.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00001.png"/></svg:svg></span></span>) as a product, reactant, or intermediate, in the eastern tropical North Pacific (ETNP) OMZ. These measurements and comparisons to data from previously published OMZ cruises
present additional evidence that <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="91b2e19ca239409a7665981c17575147"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00002.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00002.png"/></svg:svg></span></span> reduction is the predominant OMZ <span class="inline-formula">N</span> flux, followed by <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="5437eb9d658a57482749982e166d9cca"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00003.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00003.png"/></svg:svg></span></span> oxidation back to <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M8" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="8a872e45f44a0fc3c08e466e371cfb3a"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00004.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00004.png"/></svg:svg></span></span>. The combined rates of both of these <span class="inline-formula">N</span> recycling processes were observed to be much greater (up to nearly 200 times) than
the combined rates of the <span class="inline-formula">N</span> loss processes of anammox and denitrification, especially in waters near the anoxic–oxic interface. We also show
that <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M11" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="57110407e23879950960c6f561b96366"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00005.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00005.png"/></svg:svg></span></span> oxidation can occur when <span class="inline-formula">O<sub>2</sub></span> is maintained near 1 <span class="inline-formula">nM</span> by a continuous-purge system, <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M14" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="03b6852a356c49e6d8252ab141f4b6ac"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00006.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00006.png"/></svg:svg></span></span>
oxidation and <span class="inline-formula">O<sub>2</sub></span> measurements that further strengthen the case for truly anaerobic <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M16" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="27e568876ed278ec5c17db65eed8f3ba"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00007.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00007.png"/></svg:svg></span></span> oxidation. We also evaluate the
possibility that <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M17" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="3e662158e7d6a0c69e79cdad3103a280"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00008.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00008.png"/></svg:svg></span></span> dismutation provides the oxidative power for anaerobic <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M18" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="af0a8140822a727076a64a0cd661cca4"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00009.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00009.png"/></svg:svg></span></span> oxidation. The partitioning of
<span class="inline-formula">N</span> loss between anammox and denitrification differed widely from stoichiometric predictions of at most 29 % anammox; in fact,
<span class="inline-formula">N</span> loss rates at many depths were entirely due to anammox. Our new <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M21" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="8a28d0a06c83cc478fcb3953dfc5e6ea"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00010.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00010.png"/></svg:svg></span></span> reduction, <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M22" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="57d92df6ed78c83b450a25437527dccc"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00011.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00011.png"/></svg:svg></span></span> oxidation, dismutation, and
<span class="inline-formula">N</span> loss data shed light on many open questions in OMZ <span class="inline-formula">N</span> cycling research, especially the possibility of truly anaerobic
<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M25" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a399470398826b493bc1c535577f0bf6"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00012.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00012.png"/></svg:svg></span></span> oxidation.</p> |
| first_indexed | 2024-03-13T02:20:41Z |
| format | Article |
| id | doaj.art-124d729e364d4abf963f410a4c2390df |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-03-13T02:20:41Z |
| publishDate | 2023-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-124d729e364d4abf963f410a4c2390df2023-06-30T09:50:12ZengCopernicus PublicationsBiogeosciences1726-41701726-41892023-06-01202499252310.5194/bg-20-2499-2023All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zoneJ. C. Tracey0J. C. Tracey1A. R. Babbin2E. Wallace3X. Sun4X. Sun5K. L. DuRussel6K. L. DuRussel7C. Frey8C. Frey9D. E. Martocello III10T. Tamasi11S. Oleynik12B. B. Ward13Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA Department of Biology and Paleo Environment, Lamont–Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USADepartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02138, USADepartment of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USADepartment of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL 60208, USA Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA Department of Environmental Sciences, University of Basel, Bernoullistrasse 30, 4056 Basel, SwitzerlandDepartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02138, USADepartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02138, USADepartment of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, USA <p>Oxygen minimum zones (OMZs), due to their large volumes of perennially deoxygenated waters, are critical regions for understanding how the interplay between anaerobic and aerobic nitrogen (<span class="inline-formula">N</span>) cycling microbial pathways affects the marine <span class="inline-formula">N</span> budget. Here, we present a suite of measurements of the most significant OMZ <span class="inline-formula">N</span> cycling rates, which all involve nitrite (<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="dd9770d6620662f8636cc16fd90758f2"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00001.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00001.png"/></svg:svg></span></span>) as a product, reactant, or intermediate, in the eastern tropical North Pacific (ETNP) OMZ. These measurements and comparisons to data from previously published OMZ cruises present additional evidence that <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="91b2e19ca239409a7665981c17575147"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00002.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00002.png"/></svg:svg></span></span> reduction is the predominant OMZ <span class="inline-formula">N</span> flux, followed by <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="5437eb9d658a57482749982e166d9cca"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00003.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00003.png"/></svg:svg></span></span> oxidation back to <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M8" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="8a872e45f44a0fc3c08e466e371cfb3a"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00004.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00004.png"/></svg:svg></span></span>. The combined rates of both of these <span class="inline-formula">N</span> recycling processes were observed to be much greater (up to nearly 200 times) than the combined rates of the <span class="inline-formula">N</span> loss processes of anammox and denitrification, especially in waters near the anoxic–oxic interface. We also show that <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M11" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="57110407e23879950960c6f561b96366"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00005.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00005.png"/></svg:svg></span></span> oxidation can occur when <span class="inline-formula">O<sub>2</sub></span> is maintained near 1 <span class="inline-formula">nM</span> by a continuous-purge system, <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M14" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="03b6852a356c49e6d8252ab141f4b6ac"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00006.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00006.png"/></svg:svg></span></span> oxidation and <span class="inline-formula">O<sub>2</sub></span> measurements that further strengthen the case for truly anaerobic <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M16" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="27e568876ed278ec5c17db65eed8f3ba"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00007.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00007.png"/></svg:svg></span></span> oxidation. We also evaluate the possibility that <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M17" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="3e662158e7d6a0c69e79cdad3103a280"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00008.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00008.png"/></svg:svg></span></span> dismutation provides the oxidative power for anaerobic <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M18" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="af0a8140822a727076a64a0cd661cca4"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00009.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00009.png"/></svg:svg></span></span> oxidation. The partitioning of <span class="inline-formula">N</span> loss between anammox and denitrification differed widely from stoichiometric predictions of at most 29 % anammox; in fact, <span class="inline-formula">N</span> loss rates at many depths were entirely due to anammox. Our new <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M21" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="8a28d0a06c83cc478fcb3953dfc5e6ea"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00010.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00010.png"/></svg:svg></span></span> reduction, <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M22" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="57d92df6ed78c83b450a25437527dccc"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00011.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00011.png"/></svg:svg></span></span> oxidation, dismutation, and <span class="inline-formula">N</span> loss data shed light on many open questions in OMZ <span class="inline-formula">N</span> cycling research, especially the possibility of truly anaerobic <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M25" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msubsup><mi mathvariant="normal">NO</mi><mn mathvariant="normal">2</mn><mo>-</mo></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="a399470398826b493bc1c535577f0bf6"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-2499-2023-ie00012.svg" width="25pt" height="16pt" src="bg-20-2499-2023-ie00012.png"/></svg:svg></span></span> oxidation.</p>https://bg.copernicus.org/articles/20/2499/2023/bg-20-2499-2023.pdf |
| spellingShingle | J. C. Tracey J. C. Tracey A. R. Babbin E. Wallace X. Sun X. Sun K. L. DuRussel K. L. DuRussel C. Frey C. Frey D. E. Martocello III T. Tamasi S. Oleynik B. B. Ward All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone Biogeosciences |
| title | All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone |
| title_full | All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone |
| title_fullStr | All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone |
| title_full_unstemmed | All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone |
| title_short | All about nitrite: exploring nitrite sources and sinks in the eastern tropical North Pacific oxygen minimum zone |
| title_sort | all about nitrite exploring nitrite sources and sinks in the eastern tropical north pacific oxygen minimum zone |
| url | https://bg.copernicus.org/articles/20/2499/2023/bg-20-2499-2023.pdf |
| work_keys_str_mv | AT jctracey allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT jctracey allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT arbabbin allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT ewallace allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT xsun allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT xsun allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT kldurussel allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT kldurussel allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT cfrey allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT cfrey allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT demartocelloiii allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT ttamasi allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT soleynik allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone AT bbward allaboutnitriteexploringnitritesourcesandsinksintheeasterntropicalnorthpacificoxygenminimumzone |