Results 211 to 220 of about 18,838 (247)
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Fungi in Deep Subsurface Environments
2018The igneous crust of the oceans and the continents represents the major part of Earth's lithosphere and has recently been recognized as a substantial, yet underexplored, microbial habitat. While prokaryotes have been the focus of most investigations, microeukaryotes have been surprisingly neglected.
Ivarsson, Magnus +3 more
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Modelling of deep subsurface for geohazard risk assessment
2021Exploitation of subsurface natural resources, and subsurface storage of energy residues, may cause subsurface and surface deformation and damage to property. Deformation is generally difficult to assess and prove, although economical, environmental and societal interests are huge in terms of strain on granting concessions, (potential) damage claims etc.
Orlic, B., Eijs, R. van
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Denitrification in deep subsurface sediments
Geomicrobiology Journal, 1989Abstract Dissimilatory nitrate reduction (denitrification) in subsurface sediments by indigenous microflora was investigated in samples obtained over a range of depths from 0 to 289 m. Denitrifying activity in sediment samples retrieved from similar stratigraphic horizons at four different sites was determined by measuring the accumulation of N2O using
A.J. Francis, J.M. Slater, C.J. Dodge
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Characterizing the Deep Terrestrial Subsurface Microbiome
2018A large portion of the earth's biomass resides in the subsurface and recent studies have expanded our knowledge of indigenous microbial life. Advances in the field of metagenomics now allow analysis of microbial communities from low-biomass samples such as deep (>2.5 km) shale core samples.
Rebecca A, Daly +2 more
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Geomicrobiology and Metagenomics of Terrestrial Deep Subsurface Microbiomes
2016Fractures in the deep subsurface of Earth's crust are inhabited by diverse microbial communities that participate in biogeochemical cycles of the Earth. Life on Earth, which arose c. 3.5-4.0 billion years ago, reaches down at least 5 km in the crust. Deep mines, caves, and boreholes have provided scientists with opportunities to sample deep subsurface ...
Itävaara, M. +4 more
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Deep subsurface microbial processes
Reviews of Geophysics, 1995Information on the microbiology of the deep subsurface is necessary in order to understand the factors controlling the rate and extent of the microbially catalyzed redox reactions that influence the geophysical properties of these environments. Furthermore, there is an increasing threat that deep aquifers, an important drinking water resource, may be ...
Lovley, Derek, Chapelle, Francis H
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The deep subsurface biosphere is alive and well
Trends in Microbiology, 2005For the first time, metabolically active bacterial cells have recently been quantified in deep marine sediments. In contrast to previous total cell counts that do not differentiate between active cells and inactive or dormant cells, these quantifications using oligonucleotide hybridization probes target active cells and their ribosomal (r)RNA.
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Deep Biosphere: Microbiome of the Deep Terrestrial Subsurface
2019Deep biosphere represents an unexplored realm of planetary life residing underneath the continental and oceanic crusts that constitutes majorly of prokaryotic life forms bacteria and archaea. Microbial communities which reside within various deep subsurface environments form a significant but largely unknown portion of the Earth’s biosphere.
Pinaki Sar +4 more
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Deep-sea smokers: Windows to a subsurface biosphere?
Geochimica et Cosmochimica Acta, 1993Since the discovery of hyperthermophilic microbial activity in hydrothermal fluids recovered from "smoker" vents on the East Pacific Rise, the widely accepted upper temperature limit for life (based on pure culture data) has risen from below the boiling point of water at atmospheric pressure to approximately 115 degrees C.
J W, Deming, J A, Baross
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Integrated Geomechanical Modelling for Deep Subsurface Damage
63rd EAGE Conference & Exhibition, 2001Government, E&P and mining industry increasingly demand fundamental insight and accurate predictions on subsurface and surface deformation and damage due to exploitation of subsurface natural resources, and subsurface storage of energy residues (e.g. CO2).
Wees, J.D. van +5 more
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