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Methane stimulates massive nitrogen loss from freshwater reservoirs in India

The fate of the enormous amount of reactive nitrogen released to the environment by human activities in India is unknown. Here we show occurrence of seasonal stratification and generally low concentrations of dissolved inorganic combined nitrogen, and high molecular nitrogen (N(2)) to argon ratio, t...

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Autores principales: Naqvi, S. Wajih A., Lam, Phyllis, Narvenkar, Gayatree, Sarkar, Amit, Naik, Hema, Pratihary, Anil, Shenoy, Damodar M., Gauns, Mangesh, Kurian, Siby, Damare, Samir, Duret, Manon, Lavik, Gaute, Kuypers, Marcel M. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5871758/
https://www.ncbi.nlm.nih.gov/pubmed/29593290
http://dx.doi.org/10.1038/s41467-018-03607-z
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author Naqvi, S. Wajih A.
Lam, Phyllis
Narvenkar, Gayatree
Sarkar, Amit
Naik, Hema
Pratihary, Anil
Shenoy, Damodar M.
Gauns, Mangesh
Kurian, Siby
Damare, Samir
Duret, Manon
Lavik, Gaute
Kuypers, Marcel M. M.
author_facet Naqvi, S. Wajih A.
Lam, Phyllis
Narvenkar, Gayatree
Sarkar, Amit
Naik, Hema
Pratihary, Anil
Shenoy, Damodar M.
Gauns, Mangesh
Kurian, Siby
Damare, Samir
Duret, Manon
Lavik, Gaute
Kuypers, Marcel M. M.
author_sort Naqvi, S. Wajih A.
collection PubMed
description The fate of the enormous amount of reactive nitrogen released to the environment by human activities in India is unknown. Here we show occurrence of seasonal stratification and generally low concentrations of dissolved inorganic combined nitrogen, and high molecular nitrogen (N(2)) to argon ratio, thus suggesting seasonal loss to N(2) in anoxic hypolimnia of several dam-reservoirs. However, (15)N-experiments yielded low rates of denitrification, anaerobic ammonium oxidation and dissimilatory nitrate reduction to ammonium—except in the presence of methane (CH(4)) that caused ~12-fold increase in denitrification. While nitrite-dependent anaerobic methanotrophs belonging to the NC10 phylum were present, previously considered aerobic methanotrophs were far more abundant (up to 13.9%) in anoxic hypolimnion. Methane accumulation in anoxic freshwater systems seems to facilitate rapid loss of reactive nitrogen, with generally low production of nitrous oxide (N(2)O), through widespread coupling between methanotrophy and denitrification, potentially mitigating eutrophication and emissions of CH(4) and N(2)O to the atmosphere.
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spelling pubmed-58717582018-03-29 Methane stimulates massive nitrogen loss from freshwater reservoirs in India Naqvi, S. Wajih A. Lam, Phyllis Narvenkar, Gayatree Sarkar, Amit Naik, Hema Pratihary, Anil Shenoy, Damodar M. Gauns, Mangesh Kurian, Siby Damare, Samir Duret, Manon Lavik, Gaute Kuypers, Marcel M. M. Nat Commun Article The fate of the enormous amount of reactive nitrogen released to the environment by human activities in India is unknown. Here we show occurrence of seasonal stratification and generally low concentrations of dissolved inorganic combined nitrogen, and high molecular nitrogen (N(2)) to argon ratio, thus suggesting seasonal loss to N(2) in anoxic hypolimnia of several dam-reservoirs. However, (15)N-experiments yielded low rates of denitrification, anaerobic ammonium oxidation and dissimilatory nitrate reduction to ammonium—except in the presence of methane (CH(4)) that caused ~12-fold increase in denitrification. While nitrite-dependent anaerobic methanotrophs belonging to the NC10 phylum were present, previously considered aerobic methanotrophs were far more abundant (up to 13.9%) in anoxic hypolimnion. Methane accumulation in anoxic freshwater systems seems to facilitate rapid loss of reactive nitrogen, with generally low production of nitrous oxide (N(2)O), through widespread coupling between methanotrophy and denitrification, potentially mitigating eutrophication and emissions of CH(4) and N(2)O to the atmosphere. Nature Publishing Group UK 2018-03-28 /pmc/articles/PMC5871758/ /pubmed/29593290 http://dx.doi.org/10.1038/s41467-018-03607-z Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Naqvi, S. Wajih A.
Lam, Phyllis
Narvenkar, Gayatree
Sarkar, Amit
Naik, Hema
Pratihary, Anil
Shenoy, Damodar M.
Gauns, Mangesh
Kurian, Siby
Damare, Samir
Duret, Manon
Lavik, Gaute
Kuypers, Marcel M. M.
Methane stimulates massive nitrogen loss from freshwater reservoirs in India
title Methane stimulates massive nitrogen loss from freshwater reservoirs in India
title_full Methane stimulates massive nitrogen loss from freshwater reservoirs in India
title_fullStr Methane stimulates massive nitrogen loss from freshwater reservoirs in India
title_full_unstemmed Methane stimulates massive nitrogen loss from freshwater reservoirs in India
title_short Methane stimulates massive nitrogen loss from freshwater reservoirs in India
title_sort methane stimulates massive nitrogen loss from freshwater reservoirs in india
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5871758/
https://www.ncbi.nlm.nih.gov/pubmed/29593290
http://dx.doi.org/10.1038/s41467-018-03607-z
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