Methane emissions partially offset “blue carbon” burial in mangroves | Zendy

Judith A. Rosentreter | Zendy; Damien T. Maher | Zendy; Dirk V. Erler | Zendy; Rachel Murray | Zendy; Bradley D. Eyre | Zendy

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Methane emissions partially offset “blue carbon” burial in mangroves

Author(s) -

Judith A. Rosentreter,

Damien T. Maher,

Dirk V. Erler,

Rachel Murray,

Bradley D. Eyre

Publication year - 2018

Publication title -

science advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.928

H-Index - 146

ISSN - 2375-2548

DOI - 10.1126/sciadv.aao4985

Subject(s) - mangrove , blue carbon , methane , environmental science , carbon offset , mangrove ecosystem , ecosystem , methane emissions , environmental chemistry , carbon fibers , offset (computer science) , sediment , carbon cycle , carbon dioxide , greenhouse gas , ecology , carbon sequestration , chemistry , geology , biology , materials science , paleontology , composite number , computer science , composite material , programming language

Organic matter burial in mangrove forests results in the removal and long-term storage of atmospheric CO, so-called "blue carbon." However, some of this organic matter is metabolized and returned to the atmosphere as CH. Because CH has a higher global warming potential than the CO fixed in the organic matter, it can offset the CO removed via carbon burial. We provide the first estimate of the global magnitude of this offset. Our results show that high CH evasion rates have the potential to partially offset blue carbon burial rates in mangrove sediments on average by 20% (sensitivity analysis offset range, 18 to 22%) using the 20-year global warming potential. Hence, mangrove sediment and water CH emissions should be accounted for in future blue carbon assessments.

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