DOI: 10.1038/ngeo1926
论文题名: Seafloor oxygen consumption fuelled by methane from cold seeps
作者: Boetius A. ; Wenzhöfer F.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期: 9 起始页码: 725
结束页码: 734
语种: 英语
Scopus关键词: cold seep
; continental slope
; fluid flow
; hydrothermal vent community
; methane
; oxygen
; seafloor
; Animalia
英文摘要: The leakage of cold, methane-rich fluids from subsurface reservoirs to the sea floor at specific sites on continental slopes, termed cold seeps, sustains some of the richest ecosystems on the sea bed. These seep-fuelled communities utilize around two orders of magnitude more oxygen per unit area than non-seep seafloor communities. Much of the oxygen is consumed by microbes and animal-microbe symbioses that use methane as an energy source. The proportion of methane consumed varies with fluid flow rate, ranging from 80% in seeps with slow fluid flow to less than 20% in seeps where fluid flow is high. Assuming the presence of a few tens of thousands of active cold seep systems on continental slopes worldwide, we estimate that the total efflux of methane to the overlying ocean could reach 0.02 Gt of carbon annually. As much more methane is lost from continental slopes, be it through emission to the hydrosphere or consumption by microbes, than can be produced, we suggest that a substantial fraction of the methane that fuels seep ecosystems is sourced from deep carbon buried kilometres under the sea floor. © 2013 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106702
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: HGF MPG Group on Deep Sea Ecology and Technology, Alfred-Wegener-Institute Helmholtz, Centre for Polar and Ocean Research, 27515 Bremerhaven, Germany; Max Planck Institute for Marine Microbiology, Celsiusstr. 1, 28359 Bremen, Germany; MARUM-Center for Marine Environmental Sciences, University Bremen, 28359 Bremen, Germany
Recommended Citation:
Boetius A.,Wenzhöfer F.. Seafloor oxygen consumption fuelled by methane from cold seeps[J]. Nature Geoscience,2013-01-01,6(9)