Garnet-filled trails associated with carbonaceous matter mimicking microbial filaments in Archean basalt [0.03%]
含石榴石碎屑与类似微生物丝状体的碳质物质在太古宙玄武岩中的发现
K Lepot,P Philippot,K Benzerara et al.
K Lepot et al.
The study of the earliest traces of life on Earth can be complicated by abiotically formed biomorphs. We report here the finding of clustered micrometer-sized filaments of iron- and calcium-rich garnets associated with carbonaceous matter i...
Biotic and abiotic controls on iron oxyhydroxide formation in the gill chamber of the hydrothermal vent shrimp Rimicaris exoculata [0.03%]
控制热液口虾Rimicaris exoculata鳃室内铁oxyhydroxide形成的生物和非生物因素
C Schmidt,L Corbari,F Gaill et al.
C Schmidt et al.
A unique feature of the shrimp, Rimicaris exoculata, from the Rainbow hydrothermal vent field is the abundance of iron oxyhydroxides in its branchial chamber. These minerals accumulate throughout the molting cycle and are intimately associa...
Soft X-ray spectromicroscopy of nickel sorption in a natural river biofilm [0.03%]
自然河流生物膜中镍吸附的软X射线显微光谱研究
A P Hitchcock,J J Dynes,J R Lawrence et al.
A P Hitchcock et al.
Scanning transmission X-ray microscopy (STXM) at the C 1s, O 1s, Ni 2p, Ca 2p, Mn 2p, Fe 2p, Mg 1s, Al 1s and Si 1s edges was used to study Ni sorption in a complex natural river biofilm. The 10-week grown river biofilm was exposed to 10 mg...
Experimental silicification of the extremophilic Archaea Pyrococcus abyssi and Methanocaldococcus jannaschii: applications in the search for evidence of life in early Earth and extraterrestrial rocks [0.03%]
极端嗜热古菌Pyrococcus abyssi和Methanocaldococcus jannaschii的实验硅化作用及其在寻找早期地球和地外岩石生命证据方面的应用
F Orange,F Westall,J-R Disnar et al.
F Orange et al.
Hydrothermal activity was common on the early Earth and associated micro-organisms would most likely have included thermophilic to hyperthermophilic species. 3.5-3.3 billion-year-old, hydrothermally influenced rocks contain silicified micro...
Seaweed attachment to bedrock: biophysical evidence for a new geophycology paradigm [0.03%]
海藻附着于基岩：新的地球物理范例的实验证据
L Morrison,M Feely,D B Stengel et al.
L Morrison et al.
Seaweeds are amongst the most obvious and ecologically important components of rocky shore communities worldwide but until now little has been known about the processes involved in their attachment. This multidisciplinary study investigated...
Transformation of vivianite by anaerobic nitrate-reducing iron-oxidizing bacteria [0.03%]
厌氧硝酸盐呼吸铁氧化菌对 Vivianite 的转化作用研究
J Miot,K Benzerara,G Morin et al.
J Miot et al.
In phosphate-rich environments, vivianite (Fe(II)(3)(PO(4))(2), 8H(2)O) is an important sink for dissolved Fe(II) and is considered as a very stable mineral due to its low solubility at neutral pH. In the present study, we report the minera...
Effect of biological soil crusts on soil elemental concentrations: implications for biogeochemistry and as traceable biosignatures of ancient life on land [0.03%]
生物土壤结皮对土壤元素浓度的影响：对生物地球化学及陆地生命古生物学追踪标志的启示
H Beraldi-Campesi,H E Hartnett,A Anbar et al.
H Beraldi-Campesi et al.
Biological soil crusts (BSCs) are topsoil biosedimentary structures built by photosynthetic microbes commonly found today on arid soils. They play a role in soil stabilization and the fertility of arid lands, and are considered modern analo...
Comparative Study
Geobiology. 2009 Jun;7(3):348-59. DOI:10.1111/j.1472-4669.2009.00204.x 2009
Temperature dependence of greenhouse gas emissions from three hydromorphic soils at different groundwater levels [0.03%]
不同地下水位下三种水分形态土壤中的温室气体排放的温度敏感性
S Vicca,I A Janssens,H Flessa et al.
S Vicca et al.
Wetlands contribute considerably to the global greenhouse gas (GHG) balance. In these ecosystems, groundwater level (GWL) and temperature, two factors likely to be altered by climate change, exert important control over CO(2), CH(4) and N(2...
Late-Holocene succession of dinoflagellates in an Antarctic fjord using a multi-proxy approach: paleoenvironmental genomics, lipid biomarkers and palynomorphs [0.03%]
基于多指标方法的南极峡湾末次间冰期以来藻腰鞭毛虫更替：古环境基因组学、脂类生物标志物和孢粉微体化石记录
A C Boere,B Abbas,W I C Rijpstra et al.
A C Boere et al.
Recent work has shown that paleoenvironmental genomics, i.e. the application of genomic tools to analyze preserved DNA in sedimentary records, is a promising approach to reconstruct the diversity of past planktonic communities. This provide...
Geobiological investigations using secondary ion mass spectrometry: microanalysis of extant and paleo-microbial processes [0.03%]
利用二次离子质谱进行古生物地质学调查：现生和古代微生物过程的微观分析
V J Orphan,C H House
V J Orphan
The application of secondary ion mass spectrometry (SIMS) has tremendous value for the field of geobiology, representing a powerful tool for identifying the specific role of micro-organisms in biogeochemical cycles. In this review, we highl...