DOI: 10.1111/gbi.12078
Scopus记录号: 2-s2.0-84898843388
论文题名: Anaerobic methanotrophic community of a 5346-m-deep vesicomyid clam colony in the Japan Trench
作者: Felden J. ; Ruff S.E. ; Ertefai T. ; Inagaki F. ; Hinrichs K.-U. ; Wenzhöfer F.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2014
卷: 12, 期: 3 起始页码: 183
结束页码: 199
语种: 英语
Scopus关键词: Archaea
; Bacteria (microorganisms)
; Bivalvia
; Desulfobulbaceae
; Sulfurovum
; Vesicomyidae
; methane
; RNA 16S
; sulfate
; anaerobic growth
; animal
; archaeon
; bacterial phenomena and functions
; bacterium
; biota
; bivalve
; chemistry
; DNA sequence
; genetics
; hydrothermal vent
; isolation and purification
; lipid metabolism
; metabolism
; microbiology
; molecular genetics
; Pacific Ocean
; phylogeny
; physiology
; polymerase chain reaction
; sediment
; Anaerobiosis
; Animals
; Archaea
; Bacteria
; Bacterial Physiological Phenomena
; Biota
; Bivalvia
; Geologic Sediments
; Hydrothermal Vents
; Lipid Metabolism
; Methane
; Molecular Sequence Data
; Pacific Ocean
; Phylogeny
; Polymerase Chain Reaction
; RNA, Ribosomal, 16S
; Sequence Analysis, DNA
; Sulfates
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: Vesicomyidae clams harbor sulfide-oxidizing endosymbionts and are typical members of cold seep communities where active venting of fluids and gases takes place. We investigated the central biogeochemical processes that supported a vesicomyid clam colony as part of a locally restricted seep community in the Japan Trench at 5346 m water depth, one of the deepest seep settings studied to date. An integrated approach of biogeochemical and molecular ecological techniques was used combining in situ and ex situ measurements. In sediment of the clam colony, low sulfate reduction rates (maximum 128 nmol mL-1 day-1) were coupled to the anaerobic oxidation of methane. They were observed over a depth range of 15 cm, caused by active transport of sulfate due to bioturbation of the vesicomyid clams. A distinct separation between the seep and the surrounding seafloor was shown by steep horizontal geochemical gradients and pronounced microbial community shifts. The sediment below the clam colony was dominated by anaerobic methanotrophic archaea (ANME-2c) and sulfate-reducing Desulfobulbaceae (SEEP-SRB-3, SEEP-SRB-4). Aerobic methanotrophic bacteria were not detected in the sediment, and the oxidation of sulfide seemed to be carried out chemolithoautotrophically by Sulfurovum species. Thus, major redox processes were mediated by distinct subgroups of seep-related microorganisms that might have been selected by this specific abyssal seep environment. Fluid flow and microbial activity were low but sufficient to support the clam community over decades and to build up high biomasses. Hence, the clams and their microbial communities adapted successfully to a low-energy regime and may represent widespread chemosynthetic communities in the Japan Trench. In this regard, they contributed to the restricted deep-sea trench biodiversity as well as to the organic carbon availability, also for non-seep organisms, in such oligotrophic benthic environment of the dark deep ocean. © 2014 The Authors. Geobiology Published by John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85196
Appears in Collections: 影响、适应和脆弱性
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作者单位: Helmholtz-Max Planck Research Group for Deep Sea Ecology and Technology, Max Planck Institute for Marine Microbiology, Bremen, Germany; Max Planck Institute for Marine Microbiology, Department of Molecular Ecology, Bremen, Germany; MARUM Center for Marine Environmental Sciences and Department of Geosciences, University of Bremen, Bremen, Germany; Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, Kochi, Japan; Helmholtz-Max Planck Research Group for Deep Sea Ecology and Technology, Alfred Wegener Institute for Polar and Marine Research, Bremen, Germany; MARUM Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
Recommended Citation:
Felden J.,Ruff S.E.,Ertefai T.,et al. Anaerobic methanotrophic community of a 5346-m-deep vesicomyid clam colony in the Japan Trench[J]. Geobiology,2014-01-01,12(3)