Nitric oxide (NO) in the oxygen minimum zone off Peru

Hannah Lutterbeck, Damian L. Arevalo-Martinez, Carolin Löscher, Hermann W. Bange

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Nitric oxide (NO) is a short-lived compound of the marine nitrogen cycle. However, measurements of NO in seawater are analytically challenging and our knowledge about its oceanic distribution is, therefore, rudimentary. NO was measured in the oxygen minimum zone (OMZ) of the eastern tropical South Pacific Ocean (ETSP) off Peru during R/V Meteor cruise M93 in February/March 2013. NO concentrations ranged from close to or below the detection limit (0.5 nmol L−1) in the surface layer to 9.5 nmol L−1 in the OMZ. NO concentrations increased significantly when oxygen (O2) concentrations dropped below 1–2 µmol L−1. We found positive correlations between NO and NO2- as well as between NO and the abundance of archaeal amoA, a marker gene for archaeal nitrifiers. No trends between NO and nirS and hzo, marker genes for canonical denitrification and anammox, respectively, were found. To this end, we conclude that NO off Peru was mainly produced by archaeal nitrifier-denitrification at low O2 concentrations in the OMZ
Original languageEnglish
JournalDeep-Sea Research. Part 2: Topical Studies in Oceanography
Volume156
Pages (from-to)148-154
ISSN0967-0645
DOIs
Publication statusPublished - Oct 2018

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nitric oxide
oxygen
denitrification
nitrogen cycle
gene
meteor
surface layer
seawater

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Lutterbeck, Hannah ; Arevalo-Martinez, Damian L. ; Löscher, Carolin ; Bange, Hermann W. / Nitric oxide (NO) in the oxygen minimum zone off Peru. In: Deep-Sea Research. Part 2: Topical Studies in Oceanography. 2018 ; Vol. 156. pp. 148-154.
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title = "Nitric oxide (NO) in the oxygen minimum zone off Peru",
abstract = "Nitric oxide (NO) is a short-lived compound of the marine nitrogen cycle. However, measurements of NO in seawater are analytically challenging and our knowledge about its oceanic distribution is, therefore, rudimentary. NO was measured in the oxygen minimum zone (OMZ) of the eastern tropical South Pacific Ocean (ETSP) off Peru during R/V Meteor cruise M93 in February/March 2013. NO concentrations ranged from close to or below the detection limit (0.5 nmol L−1) in the surface layer to 9.5 nmol L−1 in the OMZ. NO concentrations increased significantly when oxygen (O2) concentrations dropped below 1–2 µmol L−1. We found positive correlations between NO and NO2- as well as between NO and the abundance of archaeal amoA, a marker gene for archaeal nitrifiers. No trends between NO and nirS and hzo, marker genes for canonical denitrification and anammox, respectively, were found. To this end, we conclude that NO off Peru was mainly produced by archaeal nitrifier-denitrification at low O2 concentrations in the OMZ",
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Nitric oxide (NO) in the oxygen minimum zone off Peru. / Lutterbeck, Hannah; Arevalo-Martinez, Damian L.; Löscher, Carolin; Bange, Hermann W.

In: Deep-Sea Research. Part 2: Topical Studies in Oceanography, Vol. 156, 10.2018, p. 148-154.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Nitric oxide (NO) in the oxygen minimum zone off Peru

AU - Lutterbeck, Hannah

AU - Arevalo-Martinez, Damian L.

AU - Löscher, Carolin

AU - Bange, Hermann W.

PY - 2018/10

Y1 - 2018/10

N2 - Nitric oxide (NO) is a short-lived compound of the marine nitrogen cycle. However, measurements of NO in seawater are analytically challenging and our knowledge about its oceanic distribution is, therefore, rudimentary. NO was measured in the oxygen minimum zone (OMZ) of the eastern tropical South Pacific Ocean (ETSP) off Peru during R/V Meteor cruise M93 in February/March 2013. NO concentrations ranged from close to or below the detection limit (0.5 nmol L−1) in the surface layer to 9.5 nmol L−1 in the OMZ. NO concentrations increased significantly when oxygen (O2) concentrations dropped below 1–2 µmol L−1. We found positive correlations between NO and NO2- as well as between NO and the abundance of archaeal amoA, a marker gene for archaeal nitrifiers. No trends between NO and nirS and hzo, marker genes for canonical denitrification and anammox, respectively, were found. To this end, we conclude that NO off Peru was mainly produced by archaeal nitrifier-denitrification at low O2 concentrations in the OMZ

AB - Nitric oxide (NO) is a short-lived compound of the marine nitrogen cycle. However, measurements of NO in seawater are analytically challenging and our knowledge about its oceanic distribution is, therefore, rudimentary. NO was measured in the oxygen minimum zone (OMZ) of the eastern tropical South Pacific Ocean (ETSP) off Peru during R/V Meteor cruise M93 in February/March 2013. NO concentrations ranged from close to or below the detection limit (0.5 nmol L−1) in the surface layer to 9.5 nmol L−1 in the OMZ. NO concentrations increased significantly when oxygen (O2) concentrations dropped below 1–2 µmol L−1. We found positive correlations between NO and NO2- as well as between NO and the abundance of archaeal amoA, a marker gene for archaeal nitrifiers. No trends between NO and nirS and hzo, marker genes for canonical denitrification and anammox, respectively, were found. To this end, we conclude that NO off Peru was mainly produced by archaeal nitrifier-denitrification at low O2 concentrations in the OMZ

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DO - 10.1016/j.dsr2.2017.12.023

M3 - Journal article

VL - 156

SP - 148

EP - 154

JO - Deep-Sea Research. Part 2: Topical Studies in Oceanography

JF - Deep-Sea Research. Part 2: Topical Studies in Oceanography

SN - 0967-0645

ER -