INORGANIC NITROGEN STIMULATES METHANE OXIDATION IN COASTAL LAGOON SEDIMENTS

Authors

  • Alex Enrich-Prast Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Biogas Research Center and Department of Thematic Studies – Environmental Change, Linköping University, Linkoping SE-581 83, Sweden Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil. https://orcid.org/0000-0003-3561-0936
  • Viviane Figueiredo Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil. https://orcid.org/0000-0001-7497-1537
  • Fausto Machado-Silva Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil. https://orcid.org/0000-0002-2165-3284
  • Roberta Bittencourt Peixoto Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil. https://orcid.org/0000-0002-8053-2730
  • Leonardo Amora-Nogueira Fluminense Federal University (UFF); Ecosystems and Global Change Laboratory (LEMG-UFF); Physical Geography Laboratory (LAGEF-UFF), Graduate Program in Geosciences (Environmental Geochemistry-UFF); Department of Geography, Graduate Program in Geography, (UFF), Av. Gal. Milton Tavares de Souza, s/n°, Niterói, RJ, Brazil, 24210-346 https://orcid.org/0000-0002-4864-5110
  • Gabriela Cugler Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil. https://orcid.org/0000-0003-0321-9377
  • Maria Carolina Barroso-Santos Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.
  • João Paulo de Sá Felizardo Laboratory of Radioecology and Environmental Changes, Institute of Physics, Federal Fluminense University (UFF), Avenida Gal. Milton Tavares de Souza. 24210-346 Niterói, RJ, Brazil. https://orcid.org/0000-0001-6579-7071
  • Juliana Valle Helmholtz Zentrum Munich, German Research Center for Environmental Health, Neuherberg, Germany. https://orcid.org/0000-0002-2387-227X
  • Davi Pedroni Barreto Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Luciene Valladares Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Laís Rodrigues Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Ana Lúcia Santoro Instituto de Pesquisas Jardim Botânico do Rio de Janeiro. Rua Jardim Botânico, nº 1008, Jardim Botânico, Rio de Janeiro, RJ, Brazil.
  • Luana Queiroz Pinho Rio de Janeiro State University, Department of Chemical Oceanography, Rua São Francisco Xavier, 524 – Rio de Janeiro - RJ - CEP 20550-900, Pavilhão João Lyra Filho, 4º andar, sala 4008 Bloco E https://orcid.org/0000-0002-7116-2221
  • Camila Negrão Signori Instituto Oceanográfico, Universidade de São Paulo (USP). Praça do Oceanográfico, 191. Cidade Universitária, São Paulo, SP, Brazil, 05508-120. https://orcid.org/0000-0001-5259-9332
  • Ricardo Pollery Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Eliane Silva Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.
  • Humberto Marotta Fluminense Federal University (UFF); Ecosystems and Global Change Laboratory (LEMG-UFF); Physical Geography Laboratory (LAGEF-UFF), Graduate Program in Geosciences (Environmental Geochemistry-UFF); Department of Geography, Graduate Program in Geography, (UFF), Av. Gal. Milton Tavares de Souza, s/n°, Niterói, RJ, Brazil, 24210-346 https://orcid.org/0000-0002-2828-6595

Keywords:

CH4, greenhouse gas, NH4 , NO3-, methanotrophy

Abstract

 Methane (CH4) oxidation is a critical process to reduce CH4 emissions from aquatic environments to the atmosphere. Considering the continuous increase in nitrogen in rivers, lakes, and lagoons from human sources, we re-evaluated the still controversial potential effect of inorganic nitrogen on CH4 oxidation. Here, we approached three shallow coastal lagoons that represent great environmental heterogeneity and used slurry sediments as a model system. The addition of ammonium chloride (NH4Cl) and potassium nitrate (KNO3) significantly stimulated CH4 oxidation in the sediments of all studied lagoons, indicating the potential limitation of nitrogen for the growth of CH4 oxidizing bacteria. Our findings contrast to some previous reports, where ammonium and nitrate inhibited CH4 oxidation in sediments. Indeed, our experiment was performed in a more realistic range in relation to natural concentrations of inorganic nitrogen in aquatic systems (0.5 to 1 mM) and was opposed to extreme concentrations previously used (2 to 50 mM). Our results point to the need to further assess the connection between nitrogen inputs and CH4 budgets in aquatic sediments, considering the potential fuel for CH4 oxidation that may affect the global greenhouse gas balance.

Author Biographies

Alex Enrich-Prast, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Biogas Research Center and Department of Thematic Studies – Environmental Change, Linköping University, Linkoping SE-581 83, Sweden Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.

Environmental Change, Biogeochemistry

Viviane Figueiredo, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.

Geosciencies, Biogeochemistry

Fausto Machado-Silva, Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.

Geosciencies, Biogeochemistry

Roberta Bittencourt Peixoto, Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.

Geosciencies, Biogeochemistry

Leonardo Amora-Nogueira, Fluminense Federal University (UFF); Ecosystems and Global Change Laboratory (LEMG-UFF); Physical Geography Laboratory (LAGEF-UFF), Graduate Program in Geosciences (Environmental Geochemistry-UFF); Department of Geography, Graduate Program in Geography, (UFF), Av. Gal. Milton Tavares de Souza, s/n°, Niterói, RJ, Brazil, 24210-346

Geography, Geosciences

Gabriela Cugler, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.

Geosciences, Biogeochemistry

Maria Carolina Barroso-Santos, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil. Program in Geosciences – Environmental Geochemistry, Chemistry Institute, Fluminense Federal University, 24020-141, Niteroi, Brazil.

Geosciences, Biogeochemistry

João Paulo de Sá Felizardo, Laboratory of Radioecology and Environmental Changes, Institute of Physics, Federal Fluminense University (UFF), Avenida Gal. Milton Tavares de Souza. 24210-346 Niterói, RJ, Brazil.

Physicis, Environmental changes

Juliana Valle, Helmholtz Zentrum Munich, German Research Center for Environmental Health, Neuherberg, Germany.

Environmental Health, Biogeochemistry

Davi Pedroni Barreto, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.

Microbiology, Biogeochemistry

Luciene Valladares, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.

Ecology, Biogeochemistry

Laís Rodrigues, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.

Geosciences, Biogeochemistry

Ana Lúcia Santoro, Instituto de Pesquisas Jardim Botânico do Rio de Janeiro. Rua Jardim Botânico, nº 1008, Jardim Botânico, Rio de Janeiro, RJ, Brazil.

Ecology

Luana Queiroz Pinho, Rio de Janeiro State University, Department of Chemical Oceanography, Rua São Francisco Xavier, 524 – Rio de Janeiro - RJ - CEP 20550-900, Pavilhão João Lyra Filho, 4º andar, sala 4008 Bloco E

Chemical Oceanography

Camila Negrão Signori, Instituto Oceanográfico, Universidade de São Paulo (USP). Praça do Oceanográfico, 191. Cidade Universitária, São Paulo, SP, Brazil, 05508-120.

Oceanography

Ricardo Pollery, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.

Environmental Analysis

Eliane Silva, Multiuser Unit of Environmental Analysis, University Federal of Rio de Janeiro, Rio de Janeiro, Brazil.

Environmental Analysis

Humberto Marotta, Fluminense Federal University (UFF); Ecosystems and Global Change Laboratory (LEMG-UFF); Physical Geography Laboratory (LAGEF-UFF), Graduate Program in Geosciences (Environmental Geochemistry-UFF); Department of Geography, Graduate Program in Geography, (UFF), Av. Gal. Milton Tavares de Souza, s/n°, Niterói, RJ, Brazil, 24210-346

Geography, Ecosystem and Global Change

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2022-07-08

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Vol. 26 No. 2 (2022): Limnologia no Brasil: Um tributo ao Prof. Francisco de Assis Esteves

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