The cycle of nitrogen in river systems: sources, transformation, and flux

X Xia, S Zhang, S Li, L Zhang, G Wang… - … science: Processes & …, 2018 - pubs.rsc.org
Nitrogen is a requisite and highly demanded element for living organisms on Earth.
However, increasing human activities have greatly altered the global nitrogen cycle …

Processes and microorganisms involved in the marine nitrogen cycle: knowledge and gaps

S Pajares, R Ramos - Frontiers in Marine Science, 2019 - frontiersin.org
Nitrogen (N) is a key element for life in the oceans. It controls primary productivity in many
parts of the global ocean, consequently playing a crucial role in the uptake of atmospheric …

Influence of organic carbon and nitrate loading on partitioning between dissimilatory nitrate reduction to ammonium (DNRA) and N2 production

AK Hardison, CK Algar, AE Giblin, JJ Rich - Geochimica et Cosmochimica …, 2015 - Elsevier
Biologically available nitrogen is removed from ecosystems through the microbial processes
of anaerobic ammonium oxidation (anammox) or denitrification, while dissimilatory nitrate …

Cyanobacteria and cyanophage contributions to carbon and nitrogen cycling in an oligotrophic oxygen-deficient zone

CA Fuchsman, HI Palevsky, B Widner, M Duffy… - The ISME …, 2019 - academic.oup.com
Up to half of marine N losses occur in oxygen-deficient zones (ODZs). Organic matter flux
from productive surface waters is considered a primary control on N2 production. Here we …

Regulation of nitrous oxide production in low-oxygen waters off the coast of Peru

C Frey, HW Bange, EP Achterberg, A Jayakumar… - …, 2020 - bg.copernicus.org
Oxygen-deficient zones (ODZs) are major sites of net natural nitrous oxide (N 2 O)
production and emissions. In order to understand changes in the magnitude of N 2 O …

Niche partitioning of the N cycling microbial community of an offshore oxygen deficient zone

CA Fuchsman, AH Devol, JK Saunders… - Frontiers in …, 2017 - frontiersin.org
Microbial communities in marine oxygen deficient zones (ODZs) are responsible for up to
half of marine N loss through conversion of nutrients to N2O and N2. This N loss is …

A multiproxy approach to understanding the" enhanced" flux of organic matter through the oxygen-deficient waters of the Arabian Sea

RG Keil, JA Neibauer, C Biladeau, K van der Elst… - …, 2016 - bg.copernicus.org
Free-drifting sediment net traps were deployed 14 times at depths between 80 and 500 m for
1–3 days each during the late monsoon–intermonsoon transition in the central Arabian Sea …

Chromophoric and fluorescent dissolved organic matter in and above the oxygen minimum zone off P eru

AN Loginova, S Thomsen… - Journal of Geophysical …, 2016 - Wiley Online Library
As a result of nutrient upwelling, the Peruvian coastal system is one of the most productive
regions in the ocean. Sluggish ventilation of intermediate waters, characteristic for the …

A source of isotopically light organic carbon in a low-pH anoxic marine zone

CA Vargas, SI Cantarero, J Sepúlveda, A Galán… - Nature …, 2021 - nature.com
Geochemical and stable isotope measurements in the anoxic marine zone (AMZ) off
northern Chile during periods of contrasting oceanographic conditions indicate that …

Extreme N2O accumulation in the coastal oxygen minimum zone off Peru

A Kock, DL Arévalo-Martínez, CR Löscher… - …, 2016 - bg.copernicus.org
Depth profiles of nitrous oxide (N 2 O) were measured during six cruises to the upwelling
area and oxygen minimum zone (OMZ) off Peru in 2009 and 2012/2013, covering both the …