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High Fire-derived Nitrogen Deposition On Central African Forests

Title: High Fire-derived Nitrogen Deposition On Central African Forests.
Name(s): Bauters, Marijn, author
Drake, Travis W., author
Verbeeck, Hans, author
Bode, Samuel, author
Herve-Fernandez, Pedro, author
Zito, Phoebe, author
Podgorski, David C., author
Boyemba, Faustin, author
Makelele, Isaac, author
Ntaboba, Landry Cizungu, author
Spencer, Robert G. M., author
Boeckx, Pascal, author
Type of Resource: text
Genre: Journal Article
Journal Article
Date Issued: 2018-01-16
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Atmospheric nitrogen (N) deposition is an important determinant of N availability for natural ecosystems worldwide. Increased anthropogenic N deposition shifts the stoichiometric equilibrium of ecosystems, with direct and indirect impacts on ecosystem functioning and biogeochemical cycles. Current simulation data suggest that remote tropical forests still receive low atmospheric N deposition due to a lack of proximate industry, low rates of fossil fuel combustion, and absence of intensive agriculture. We present field-based N deposition data for forests of the central Congo Basin, and use ultrahigh-resolution mass spectrometry to characterize the organic N fraction. Additionally, we use satellite data and modeling for atmospheric N source apportionment. Our results indicate that these forests receive 18.2 kg N hectare(-1) years(-1) as wet deposition, with dry deposition via canopy interception adding considerably to this flux. We also show that roughly half of the N deposition is organic, which is often ignored in N deposition measurements and simulations. The source of atmospheric N is predominantly derived from intensive seasonal burning of biomass on the continent. This high N deposition has important implications for the ecology of the Congo Basin and for global biogeochemical cycles more broadly.
Identifier: FSU_libsubv1_wos_000423091400050 (IID), 10.1073/pnas.1714597115 (DOI)
Keywords: system, climate, phosphorus, dissolved organic-matter, ecosystems, ft-icr-ms, carbon-cycle, biomass burning, central Africa, Congo Basin, dry deposition, global assessment, nitrogen deposition, productivity, tropical forests
Publication Note: The publisher's version of record is available at
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Host Institution: FSU
Is Part Of: Proceedings of the National Academy of Sciences of the United States of America.
Issue: iss. 3, vol. 115

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Bauters, M., Drake, T. W., Verbeeck, H., Bode, S., Herve-Fernandez, P., Zito, P., … Boeckx, P. (2018). High Fire-derived Nitrogen Deposition On Central African Forests. Proceedings Of The National Academy Of Sciences Of The United States Of America. Retrieved from