Tim C Sweere,Alexander J Dickson,Derek Vance
Tim C Sweere
Nickel and zinc are both bio-essential micronutrients with a nutrient-like distribution in the modern ocean, but show key differences in their biological functions and geochemical behavior. Eukaryotic phytoplankton, and especially diatoms, ...
The diagenetic fate of collagen as revealed by analytical pyrolysis of fossil fish scales from deep time [0.03%]
由深时化石鱼鳞的分析裂解揭示的胶原蛋白成岩运命
Raman Umamaheswaran,Suryendu Dutta,Guntupalli V R Prasad et al.
Raman Umamaheswaran et al.
The mechanism of protein degradation has remained a topic of debate (specifically concerning their preservation in deep time), which has recently been invigorated due to multiple published reports of preservation ranging from Miocene to the...
Eric Alexander Runge,Muammar Mansor,Andreas Kappler et al.
Eric Alexander Runge et al.
Deep-sea hydrothermal systems provide ideal conditions for prebiotic reactions and ancient metabolic pathways and, therefore, might have played a pivotal role in the emergence of life. To understand this role better, it is paramount to exam...
Noah J Planavsky,Dan Asael,Alan D Rooney et al.
Noah J Planavsky et al.
Phosphorus (P) is typically considered to be the ultimate limiting nutrient for Earth's biosphere on geologic timescales. As P is monoisotopic, its sedimentary enrichment can provide some insights into how the marine P cycle has changed thr...
James A Bradley,Christopher B Trivedi,Matthias Winkel et al.
James A Bradley et al.
Glacier and ice sheet surfaces host diverse communities of microorganisms whose activity (or inactivity) influences biogeochemical cycles and ice melting. Supraglacial microbes endure various environmental extremes including resource scarci...
Jeffrey M Dick,Grayson M Boyer,Peter A Canovas rd et al.
Jeffrey M Dick et al.
Thermodynamic characterization of the relative stabilities of chemical compounds is a pillar of conceptual models in various fields of geosciences. Analogous models applied to genomes can yield new information about the relationship between...
Reduction in animal abundance and oxygen availability during and after the end-Triassic mass extinction [0.03%]
三叠纪末次大灭绝及之后动物数量减少和氧气供应降低
Pulkit Singh,Wanyi Lu,Zunli Lu et al.
Pulkit Singh et al.
The end-Triassic biodiversity crisis was one of the most severe mass extinctions in the history of animal life. However, the extent to which the loss of taxonomic diversity was coupled with a reduction in organismal abundance remains to be ...
A re-examination of the mechanism of whiting events: A new role for diatoms in Fayetteville Green Lake (New York, USA) [0.03%]
费耶特维尔格林湖(美国纽约)水华事件机制的再研究——浮游植物中硅藻的新角色
Chloe Stanton,Ben Davis Barnes,Lee R Kump et al.
Chloe Stanton et al.
Whiting events-the episodic precipitation of fine-grained suspended calcium carbonates in the water column-have been documented across a variety of marine and lacustrine environments. Whitings likely are a major source of carbonate muds, a ...
Analysis of archaeal core ether lipids using Time of Flight-Secondary Ion Mass Spectrometry (ToF-SIMS): Exploring a new prospect for the study of biomarkers in geobiology [0.03%]
飞行二次离子质谱（ToF-SIMS）分析古生菌核心醚脂的研究——探讨地生物学生物标志物研究的新方向
V Thiel,J Toporski,G Schumann et al.
V Thiel et al.
The capability of Time of Flight-Secondary Ion Mass Spectrometry (ToF-SIMS) of analysing molecular archaeal biomarkers in geobiological samples was tested and demonstrated. Using a bismuth cluster primary ion source, isopranyl glycerol di- ...
K M Eek,A L Sessions,D P Lies
K M Eek
One of the outstanding current problems in both geobiology and environmental microbiology is the quantitative analysis of in situ microbial metabolic activities. Techniques capable of such analysis would have wide application, from quantify...