Results 71 to 80 of about 3,897 (205)

High latitude terrestrial carbon isotope and mercury perturbations across the Late Triassic Carnian Pluvial Episode in Northwestern China

Scientific Reports
The Carnian Pluvial Episode (CPE) was a Late Triassic interval of global environmental changes and biological turnovers linked to C-cycle perturbation and global warming.
Tastulek Haserbek, Li Tian, Jinyuan Huang, Wenchao Shu, Yuchu Liu, Xia Hua, David B. Kemp, Guido Roghi, Greta Alverà, Piero Gianolla, Yong Du, Huyue Song, Haijun Song, Daoliang Chu, Yiran Cao, Yi Shi, Jacopo Dal Corso   +16 more
doaj   +1 more source

Freezing Tolerance of Thermophilic Bacterial Endospores in Marine Sediments

Frontiers in Microbiology, 2019
Dormant endospores of anaerobic, thermophilic bacteria found in cold marine sediments offer a useful model for studying microbial biogeography, dispersal, and survival.
Margaret A. Cramm, Anirban Chakraborty, Carmen Li, S. Emil Ruff, Bo Barker Jørgensen, Casey R. J. Hubert   +5 more
doaj   +1 more source

Learning Geomicrobiology as a Team Using Microbial Mats, a Multidisciplinary Approach

, 2014
Microbial mats are one of the best suited laminar organo-sedimentary ecosystems for students from different educational backgrounds to visualize the direct relationship between microbes and minerals.
Lilliam Casillas-martinez, Pieter T. Visscher, Carlos Rios-velazquez   +2 more
core   +1 more source

Two worlds beneath: Distinct microbial strategies of the rock-attached and planktonic subsurface biosphere

Microbiome
Background Microorganisms in groundwater ecosystems exist either as planktonic cells or as attached communities on aquifer rock surfaces. Attached cells outnumber planktonic ones by at least three orders of magnitude, suggesting a critical role in ...
Alisha Sharma, Kirsten Küsel, Carl-Eric Wegner, Olga Maria Pérez-Carrascal, Martin Taubert   +4 more
doaj   +1 more source

Formate, acetate and propionate as substrates for sulfate reduction in sub-arctic sediments of Southwest Greenland.

Frontiers in Microbiology, 2015
Volatile fatty acids (VFAs) are key intermediates in the anaerobic mineralization of organic matter in marine sediments. We studied the role of VFAs in the carbon and energy turnover in the sulfate reduction zone of sediments from the sub-arctic ...
Clemens eGlombitza, Marion eJaussi, Hans eRøy, Marit-Solveig eSeidenkrantz, Marit-Solveig eSeidenkrantz, Bente Aagaard Lomstein, Bente Aagaard Lomstein, Bo Barker Jørgensen   +7 more
doaj   +1 more source

The Impact of Host Rock Geochemistry on Bacterial Community Structure in Oligotrophic Cave Environments. [PDF]

International Journal of Speleology, 2007
Despite extremely starved conditions, caves contain surprisingly diverse microbial communities. Our research is geared toward understanding what ecosystems drivers are responsible for this high diversity. To asses the effect of rock fabric and mineralogy,
Hazel A. Barton, Nicholas M. Taylor, Michael P. Kreate, Austin C. Springer, Stuart A. Oehrle, Janet L. Bertog   +5 more
doaj  

Microbial Community Structure and Arsenic Biogeochemistry in Two Arsenic-Impacted Aquifers in Bangladesh

mBio, 2017
Long-term exposure to trace levels of arsenic (As) in shallow groundwater used for drinking and irrigation puts millions of people at risk of chronic disease.
Edwin T. Gnanaprakasam, Jonathan R. Lloyd, Christopher Boothman, Kazi Matin Ahmed, Imtiaz Choudhury, Benjamin C. Bostick, Alexander van Geen, Brian J. Mailloux   +7 more
doaj   +1 more source

Metatranscriptomics of microbial biofilm succession on HDPE foil: uncovering plastic-degrading potential in soil communities

Environmental Microbiome
Background Although plastic pollution is increasing worldwide, very little is known about the microbial processes that take place once plastic debris is incorporated into the soil matrix.
Joana MacLean, Alexander Bartholomäus, Roberts Blukis, Susanne Liebner, Dirk Wagner   +4 more
doaj   +1 more source

Geomicrobiology in cave environments: past, current and future perspectives

, 2007
Redox Geochemistry conference in 1994 was a watershed event in the history of cave geomicrobiology studies within the US. Since that time, studies of cave geomicrobiology have accelerated in number, complexity of techniques used, and depth of the results
Hazel A. Barton, Barton, Hazel A., Northup, Diana E., Diana E. Northup   +3 more
core  

Sulfur microenvironments as hotspots for biogenic pyrite formation

Scientific Reports
Pyrite (FeS2) is the end-product of bacterial sulfur cycling in reduced sedimentary environments. Sulfate-reducing bacteria (SRB) are mostly considered for biogenic pyrite formation due to their significant contribution to sulfide production at ambient ...
Fatih Sekerci, Stefan Fischer, Prachi Joshi, Stefan Peiffer, Andreas Kappler, Muammar Mansor   +5 more
doaj   +1 more source