气候变化领域集成服务门户(CCPortal): Methane oxidation minimizes emissions and offsets to carbon burial in mangroves

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DOI	10.1038/s41558-024-01927-1
	Methane oxidation minimizes emissions and offsets to carbon burial in mangroves
	Cotovicz Jr, Luiz C.; Abril, Gwenael; Sanders, Christian J.; Tait, Douglas R.; Maher, Damien T.; Sippo, James Z.; Holloway, Ceylena; Yau, Yvonne Y. Y.; Santos, Isaac R.
发表日期	2024
ISSN	1758-678X
EISSN	1758-6798
英文摘要	Maximizing carbon sequestration in mangroves is part of the global effort to combat the climate crisis. However, methane (CH4) emissions can partially offset carbon sequestration in mangroves. Previous estimates have suggested that CH4 emissions offset organic carbon burial by 20% in mangroves with substantial freshwater inputs and/or in highly impacted mangroves. Here we resolve the magnitude and drivers of the mangrove CH4 offset using multiple isotopic tracers across a latitudinal gradient. CH4 emission offsets were smaller in high-salinity (similar to 7%) than in freshwater-influenced (similar to 27%) mangroves. Carbon sequestration was disproportionally high compared with CH4 emissions in understudied tropical areas. Low CH4 emissions were explained by minor freshwater inputs minimizing CH4 production in saline, high-sulfate conditions and intense CH4 oxidation in porewaters and surface waters. CH4 oxidation in mangrove surface waters reduced potential aquatic CH4 emissions by 10-33%. Overall, carbon sequestration through mangrove preservation and restoration is less affected by CH4 emissions than previously thought.
英文关键词	DISSOLVED INORGANIC CARBON; ORGANIC-CARBON; GAS-EXCHANGE; FRESH-WATER; ANAEROBIC OXIDATION; CH4 EMISSIONS; RANDERS FJORD; CO2; DIOXIDE; DYNAMICS
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001159137800001
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282271
作者单位	Leibniz Institut fur Ostseeforschung Warnemunde; Universidade Federal do Ceara; Centre National de la Recherche Scientifique (CNRS); Institut de Recherche pour le Developpement (IRD); Museum National d'Histoire Naturelle (MNHN); Sorbonne Universite; Universidade Federal Fluminense; Southern Cross University; Southern Cross University; University of Gothenburg
推荐引用方式 GB/T 7714	Cotovicz Jr, Luiz C.,Abril, Gwenael,Sanders, Christian J.,et al. Methane oxidation minimizes emissions and offsets to carbon burial in mangroves[J],2024.
APA	Cotovicz Jr, Luiz C..,Abril, Gwenael.,Sanders, Christian J..,Tait, Douglas R..,Maher, Damien T..,...&Santos, Isaac R..(2024).Methane oxidation minimizes emissions and offsets to carbon burial in mangroves.Nature Climate Change.
MLA	Cotovicz Jr, Luiz C.,et al."Methane oxidation minimizes emissions and offsets to carbon burial in mangroves".Nature Climate Change (2024).