气候变化领域集成服务门户(CCPortal): Rates and pathways of CH4 oxidation in ferruginous Lake Matano, Indonesia

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DOI	10.1111/gbi.12325
	Rates and pathways of CH4 oxidation in ferruginous Lake Matano, Indonesia
	Sturm A.; Fowle D.A.; Jones C.; Leslie K.; Nomosatryo S.; Henny C.; Canfield D.E.; Crowe S.A.
发表日期	2019
ISSN	14724677
起始页码	294
结束页码	307
卷号	17 期号:3
英文摘要	This study evaluates rates and pathways of methane (CH4) oxidation and uptake using 14C-based tracer experiments throughout the oxic and anoxic waters of ferruginous Lake Matano. Methane oxidation rates in Lake Matano are moderate (0.36 nmol L−1 day−1 to 117 μmol L−1 day−1) compared to other lakes, but are sufficiently high to preclude strong CH4 fluxes to the atmosphere. In addition to aerobic CH4 oxidation, which takes place in Lake Matano's oxic mixolimnion, we also detected CH4 oxidation in Lake Matano's anoxic ferruginous waters. Here, CH4 oxidation proceeds in the apparent absence of oxygen (O2) and instead appears to be coupled to some as yet uncertain combination of nitrate (NO-3), nitrite (NO-2), iron (Fe) or manganese (Mn), or sulfate (SO2-4) reduction. Throughout the lake, the fraction of CH4 carbon that is assimilated vs. oxidized to carbon dioxide (CO2) is high (up to 93%), indicating extensive CH4 conversion to biomass and underscoring the importance of CH4 as a carbon and energy source in Lake Matano and potentially other ferruginous or low productivity environments. © 2018 John Wiley & Sons Ltd
关键词	carbon dioxide lake water methane methanotrophy oligotrophic environment oxidation reduction Greater Sunda Islands Lake Matano Malili Lakes Malili Lakes South Sulawesi Sulawesi Sunda Isles methane chemistry Indonesia lake oxidation reduction reaction Indonesia Lakes Methane Oxidation-Reduction
语种	英语
来源机构	Geobiology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133235
推荐引用方式 GB/T 7714	Sturm A.,Fowle D.A.,Jones C.,et al. Rates and pathways of CH4 oxidation in ferruginous Lake Matano, Indonesia[J]. Geobiology,2019,17(3).
APA	Sturm A..,Fowle D.A..,Jones C..,Leslie K..,Nomosatryo S..,...&Crowe S.A..(2019).Rates and pathways of CH4 oxidation in ferruginous Lake Matano, Indonesia.,17(3).
MLA	Sturm A.,et al."Rates and pathways of CH4 oxidation in ferruginous Lake Matano, Indonesia".17.3(2019).