globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12141
Scopus记录号: 2-s2.0-84937967398
论文题名:
Modeling the carbon cycle in Lake Matano
作者: Kuntz L.B.; Laakso T.A.; Schrag D.P.; Crowe S.A.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2015
卷: 13, 期:5
起始页码: 454
结束页码: 461
语种: 英语
Scopus关键词: anoxic conditions ; bacterium ; carbon cycle ; chemical composition ; methane ; methanogenesis ; organic carbon ; Proterozoic ; sediment core ; Greater Sunda Islands ; Lake Matano ; Malili Lakes ; South Sulawesi ; Sulawesi ; Sunda Isles ; carbon ; carbon dioxide ; methane ; anaerobic growth ; carbon cycle ; Indonesia ; isotope labeling ; lake ; metabolism ; Anaerobiosis ; Carbon ; Carbon Cycle ; Carbon Dioxide ; Indonesia ; Isotope Labeling ; Lakes ; Methane
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Lake Matano, Indonesia, is a stratified anoxic lake with iron-rich waters that has been used as an analogue for the Archean and early Proterozoic oceans. Past studies of Lake Matano report large amounts of methane production, with as much as 80% of primary production degraded via methanogenesis. Low δ13C values of DIC in the lake are difficult to reconcile with this notion, as fractionation during methanogenesis produces isotopically heavy CO2. To help reconcile these observations, we develop a box model of the carbon cycle in ferruginous Lake Matano, Indonesia, that satisfies the constraints of CH4 and DIC isotopic profiles, sediment composition, and alkalinity. We estimate methane fluxes smaller than originally proposed, with about 9% of organic carbon export to the deep waters degraded via methanogenesis. In addition, despite the abundance of Fe within the waters, anoxic ferric iron respiration of organic matter degrades <3% of organic carbon export, leaving methanogenesis as the largest contributor to anaerobic organic matter remineralization, while indicating a relatively minor role for iron as an electron acceptor. As the majority of carbon exported is buried in the sediments, we suggest that the role of methane in the Archean and early Proterozoic oceans is less significant than presumed in other studies. © 2015 John Wiley & Sons Ltd.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85139
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.


作者单位: Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Departments of Microbiology and Immunology and Earth, Ocean, and Atmospheric Sciences, University of British Columbia, Vancouver, Canada

Recommended Citation:
Kuntz L.B.,Laakso T.A.,Schrag D.P.,et al. Modeling the carbon cycle in Lake Matano[J]. Geobiology,2015-01-01,13(5)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Kuntz L.B.]'s Articles
[Laakso T.A.]'s Articles
[Schrag D.P.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Kuntz L.B.]'s Articles
[Laakso T.A.]'s Articles
[Schrag D.P.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Kuntz L.B.]‘s Articles
[Laakso T.A.]‘s Articles
[Schrag D.P.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.