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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
A mangrove nitrous oxide sink attenuates methane climate impacts
Limnology and oceanography letters, Vol.10(3), pp.298-307
06/2025
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Abstract
We resolve mangrove nitrous oxide (N 2 O), methane (CH 4 ), and carbon dioxide (CO 2 ) vertical exchange with the atmosphere and lateral exchange with the ocean. Our new observations in Brazil were combined with literature data to reassess the overall mangrove carbon sequestration potential. The pristine mangrove creek was a source of CO 2 and CH 4 , and a sink for N 2 O. The CO 2 ‐equivalent N 2 O uptake offset up to 71% of local CH 4 emissions. Global mangrove N 2 O sinks offset 34% of water–air CH 4 emissions, potentially absorbing 0.6 Tg CO 2 equivalents per year. Overlooking lateral exchange led to a large underestimation of mangrove N 2 O and CH 4 fluxes. Previous observations in mangroves receiving nitrogen‐rich freshwater may have misattributed N 2 O sources. Pristine seawater‐dominated mangroves typically act as N 2 O sinks while those influenced by anthropogenic inputs are sources. Overall, the observed N 2 O sink further enhances the net climate benefit of mangroves.
Details
- Title
- A mangrove nitrous oxide sink attenuates methane climate impacts
- Creators
- Alex Cabral - University of GothenburgJuliana Hayden - Universidade Federal de Santa CatarinaBárbara Viana - Universidade Federal de Santa CatarinaMarcos de Almeida - Federal University of BahiaTiago Passos - University of SydneyRoberto Barcellos - Universidade Federal de PernambucoStefano Bonaglia - University of GothenburgVanessa Hatje - Universidade Federal da BahiaIsaac R. Santos - University of Gothenburg
- Publication Details
- Limnology and oceanography letters, Vol.10(3), pp.298-307
- Publisher
- Wiley
- Number of pages
- 10
- Grant note
- Government of the Principality of Monaco 2019-03930; 2020-00457; 2022-04710 / Vetenskapsrdet; Swedish Research Council Swedish Research Council
- Identifiers
- 991013274175502368
- Copyright
- © 2025 The Author(s). Limnology and Oceanography Letters published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre
- Language
- English
- Resource Type
- Journal article