Alteration of iron-rich lacustrine sediments by dissimilatory iron-reducing bacteria [0.03%]
铁还原菌对富铁湖泊沉积物的改造作用研究进展
S A Crowe,J A Roberts,C G Weisener et al.
S A Crowe et al.
The reduction of Fe during bacterial anaerobic respiration in sediments and soils not only causes the degradation of organic matter but also results in changes in mineralogy and the redistribution of many nutrients and trace metals. Underst...
The effect of methanogen growth on mineral substrates: will Ni markers of methanogen-based communities be detectable in the rock record? [0.03%]
产甲烷菌生长对矿物基质的影响及其在岩石记录中的镍标志元素的可探测性？
Elizabeth M Hausrath,Laura J Liermann,Christopher H House et al.
Elizabeth M Hausrath et al.
Methanogens, thought to be present on early Earth, have a high requirement for Ni, suggesting that Ni utilization could be a potential biosignature for methanogens if enhanced Ni extraction from surrounding minerals accompanies methanogenic...
Control of hydrogen partial pressures on the rates of syntrophic microbial metabolisms: a kinetic model for butyrate fermentation [0.03%]
氢分压对协同微生物代谢速率的控制：丁酸发酵的动力学模型
Q Jin
Q Jin
A new model describing the rate of syntrophic butyrate fermentation is constructed based on a thermodynamically consistent rate law and the metabolic pathway. This model takes into account the mechanism of reverse electron transfer and prop...
Micro-scale sulphur isotope evidence for sulphur cycling in the late Archean shallow ocean [0.03%]
晚太古代浅海硫循环的微尺度硫同位素证据
B S Kamber,M J Whitehouse
B S Kamber
We report in situ secondary ion mass spectrometer sulphur isotope data for sedimentary pyrite from the 2.52 Ga Upper Campbellrand Subgroup, Transvaal, South Africa. The analysed sedimentary rocks represent a transition in depositional envir...
W W Fischer,A Pearson
W W Fischer
Hopanes and steranes are found almost universally in the sedimentary rock record where they often are used as proxies for aerobic organisms, metabolisms, and environments. In order to interpret ancient lipid signatures confidently we requir...
A review of microbial-environmental interactions recorded in Proterozoic carbonate-hosted chert [0.03%]
地球前寒武纪碳酸盐岩中微生物-环境相互作用的再认识
Kelsey R Moore,Mirna Daye,Jian Gong et al.
Kelsey R Moore et al.
The record of life during the Proterozoic is preserved by several different lithologies, but two in particular are linked both spatially and temporally: chert and carbonate. These lithologies capture a snapshot of dominantly peritidal envir...
Metabarcoding reveals high diversity of benthic foraminifera linked to water masses circulation at coastal Svalbard [0.03%]
metabarcoding解码揭示出与斯瓦尔巴德沿海水域团系循环相关的底栖有孔虫的高多样性
Ngoc-Loi Nguyen,Joanna Pawłowska,Inès Barrenechea Angeles et al.
Ngoc-Loi Nguyen et al.
Arctic marine biodiversity is undergoing rapid changes due to global warming and modifications of oceanic water masses circulation. These changes have been demonstrated in the case of mega- and macrofauna, but much less is known about their...
Low oxygen levels with high redox heterogeneity in the late Ediacaran shallow ocean: Constraints from I/(Ca + Mg) and Ce/Ce* of the Dengying Formation, South China [0.03%]
南中国震旦系登封段丁屋层中碘离子与镁钙同位素及铈异常：揭示埃迪卡拉纪浅海低氧及氧化还原异质性
Yi Ding,Wei Sun,Shugen Liu et al.
Yi Ding et al.
Most previous studies focused on the redox state of the deep water, leading to an incomplete understanding of the spatiotemporal evolution of the redox-stratified ocean during the Ediacaran-Cambrian transition. In order to decode the redox ...
An experimental study on post-mortem dissolution and overgrowth processes affecting coccolith assemblages: A rapid and complex process [0.03%]
关于浮游有孔虫死后溶解和次生增生过程的实验研究——一个快速且复杂的过程
Katarína Holcová,Filip Scheiner
Katarína Holcová
Coccolith dissolution together with post-mortem morphological features are immensely important phenomena that can affect assemblage compositions, complicate taxonomic identification as well as provide valuable palaeoenvironmental insights. ...