The Importance of Dissimilatory Nitrate Reduction to Ammonium (DNRA) in the Nitrogen Cycle of Coastal Ecosystems
Anne E. Giblin,Craig R. Tobias,Bongkeun Song,Nathaniel B. Weston,Gary Thomas Banta,Victor H. Rivera-Monroy +5 more
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The Oceanography 26, no. 3 (2013): 124-131, doi:10.5670/oceanog.2013.54.1 as discussed by the authors, was published by The Oceanography Society.Abstract:
Author Posting. © The Oceanography Society, 2013. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 26, no. 3 (2013): 124–131, doi:10.5670/oceanog.2013.54.read more
Citations
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Effects of experimental warming and carbon addition on nitrate reduction and respiration in coastal sediments
TL;DR: In this paper, the authors conducted a microcosm experiment to explore effects of warming and carbon availability on nitrate reduction pathways in marine sediments and found that combined warming and C addition had the strongest effect on the nitrate flux across the sediment water interface, with a complete switch early in the experiment from influx to sustained efflux.
Journal ArticleDOI
Oxygenation of an anoxic fjord basin strongly stimulates benthic denitrification and DNRA
Loreto De Brabandere,Loreto De Brabandere,Stefano Bonaglia,Mikhail Kononets,Lena Viktorsson,Lena Viktorsson,Anders Stigebrandt,Bo Thamdrup,Per O. J. Hall +8 more
TL;DR: In this article, the functional response of benthic nitrate-reducing processes to a long-term engineered oxygenation effort in a density-stratified fjord with euxinic bottom waters was investigated.
Journal ArticleDOI
Isotope signatures of N2O emitted from vegetable soil: Ammonia oxidation drives N2O production in NH4(+)-fertilized soil of North China
TL;DR: The results show that ammonia oxidation is the predominant process under high water content (70% water-filled pore space), and nitrifier denitrification contribution increases with increasing N content.
Journal ArticleDOI
Capping with activated carbon reduces nutrient fluxes, denitrification and meiofauna in contaminated sediments.
Stefano Bonaglia,Robert Rämö,Ugo Marzocchi,Léonie Le Bouille,Martine Leermakers,Francisco J. A. Nascimento,Jonas S. Gunnarsson +6 more
TL;DR: It is demonstrated that capping with powdered AC produces significant effects on benthic biogeochemical fluxes, microbial processes and meiofauna abundances, which are likely due to an increase in porewater pH and to the sequestration of natural, sedimentary organic matter by AC particles.
Journal ArticleDOI
Distribution patterns of nitrogen micro-cycle functional genes and their quantitative coupling relationships with nitrogen transformation rates in a biotrickling filter.
TL;DR: The presence of DNRA, nitrification, and denitrification was determined to be a pivotal pathway that contributed to the nitrate accumulation in the biofilter.
References
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The evolution and future of earth's nitrogen cycle
TL;DR: Humans must modify their behavior or risk causing irreversible changes to life on Earth, as the damage done by humans to the nitrogen economy of the planet will persist for decades, possibly centuries, if active intervention and careful management strategies are not initiated.
Journal ArticleDOI
Have we overemphasized the role of denitrification in aquatic ecosystems? A review of nitrate removal pathways
TL;DR: The removal of nitrogen in aquatic ecosystems is of great interest because excessive nitrate in groundwater and surface water is a growing problem and is linked to eutrophication and harmful algal blooms, especially in coastal marine waters.
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Denitrification: ecological niches, competition and survival
TL;DR: It is suggested that organic carbon is more important than oxygen status in determining denitrifying enzyme content of habitats, and Michaelis-Menten theoretical models suggest the conditions required to achieve changes in partitioning between the two fates of nitrate.
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Eutrophication in shallow coastal bays and lagoons: the role of plants in the coastal filter
TL;DR: In this article, the authors focus on one type of biotic feedback that influences eu- trophication patterns in coastal bays, and discuss the 2 aspects of plant-mediated nutrient cycling as eutrophica- tion induces a shift in primary producer dominance.
Journal ArticleDOI
Unexpected nondenitrifier nitrous oxide reductase gene diversity and abundance in soils
Robert A. Sanford,Darlene D. Wagner,Qingzhong Wu,Joanne C. Chee-Sanford,Sara H. Thomas,Claribel Cruz-García,Gina P. Rodriguez,Gina P. Rodriguez,Arturo Massol-Deyá,Kishore Kumar Krishnani,Kirsti M. Ritalahti,Kirsti M. Ritalahti,Silke Nissen,Silke Nissen,Konstantinos T. Konstantinidis,Frank E. Löffler,Frank E. Löffler +16 more
TL;DR: It is demonstrated that diverse microbial taxa possess divergent nos clusters with genes that are related yet evolutionarily distinct from the typical nos genes of denitirifers, and that nondenitrifying populations with a broad range of metabolisms and habitats are potentially significant contributors to N2O consumption.
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