DOI: 10.1111/gbi.12185
Scopus记录号: 2-s2.0-85027924975
论文题名: Microbial diversity and activity in seafloor brine lake sediments (Alaminos Canyon block 601, Gulf of Mexico)
作者: Crespo-Medina M. ; Bowles M.W. ; Samarkin V.A. ; Hunter K.S. ; Joye S.B.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2016
卷: 14, 期: 5 起始页码: 483
结束页码: 498
语种: 英语
Scopus关键词: carbon
; hydrogen sulfide
; methane
; sulfate
; brine
; concentration (composition)
; deep sea
; dissolved inorganic carbon
; diversity index
; geochemistry
; habitat type
; halocline
; hydrogen
; hydrogen sulfide
; lacustrine deposit
; methane
; microbial activity
; microbial community
; nutrient
; oxidation
; particulate organic carbon
; reduction
; seafloor
; species diversity
; species richness
; statistical analysis
; sulfate
; archaeon
; bacterium
; biota
; chemistry
; classification
; Gulf of Mexico
; isolation and purification
; lake
; metabolism
; microbiology
; oxidation reduction reaction
; sediment
; Archaea
; Bacteria
; Biota
; Carbon
; Geologic Sediments
; Gulf of Mexico
; Hydrogen Sulfide
; Lakes
; Methane
; Oxidation-Reduction
; Sulfates
; Alaminos Canyon
; Atlantic Ocean
; Gulf of Mexico
; Archaea
; Bacteria (microorganisms)
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: The microbial communities thriving in deep-sea brines are sustained largely by energy rich substrates supplied through active seepage. Geochemical, microbial activity, and microbial community composition data from different habitats at a Gulf of Mexico brine lake in Alaminos Canyon revealed habitat-linked variability in geochemistry that in turn drove patterns in microbial community composition and activity. The bottom of the brine lake was the most geochemically extreme (highest salinity and nutrient concentrations) habitat and its microbial community exhibited the highest diversity and richness indices. The habitat at the upper halocline of the lake hosted the highest rates of sulfate reduction and methane oxidation, and the largest inventories of dissolved inorganic carbon, particulate organic carbon, and hydrogen sulfide. Statistical analyses indicated a significant positive correlation between the bacterial and archaeal diversity in the bottom brine sample and NH4+ inventories. Other environmental factors with positive correlation with microbial diversity indices were DOC, H2 S, and DIC concentrations. The geochemical regime of different sites within this deep seafloor extreme environment exerts a clear selective force on microbial communities and on patterns of microbial activity. © 2016 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85097
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Marine Sciences, University of Georgia, Athens, GA, USA
Recommended Citation:
Crespo-Medina M.,Bowles M.W.,Samarkin V.A.,et al. Microbial diversity and activity in seafloor brine lake sediments (Alaminos Canyon block 601, Gulf of Mexico)[J]. Geobiology,2016-01-01,14(5)