1,721,383 research outputs found
Data from the ESA BioRock experiment
No full textSets of data from the ESA BioRock experiment showing biomining/bioleaching of elements (rare earth elements). Experiment on board of the International Space Station to study microbe-mineral interactions in space.
Data in support of the manuscript: Cockell et al. (2020) Space station biomining experiment demonstrates rare earth element extraction in microgravity and Mars gravity. Nature Communications (in review)
Martian impact fracturing pervasively influences habitability
No full textThis file is a Jupiter notebook file of the data used to calculate the fracturing volume and surface area as laid out by Cockell, CS and Collins (2024) Martian impact fracturing pervasively influences habitability. Journal of Geophysical Research. The equations used to calculate that data are shown in that paper.This file is a Jupiter notebook file of the data used to calculate the fracturing volume and surface area as laid out by Cockell, CS and Collins (2024) Martian impact fracturing pervasively influences habitability. Journal of Geophysical Research. The equations used to calculate that data are shown in that paper
BioRock rare earth element leaching data
No full textSets of data from the ESA BioRock experiment showing biomining/bioleaching of elements (rare earth elements). Experiment on board of the International Space Station to study microbe-mineral interactions in space. Data in support of the manuscript: Cockell et al. (2020) Space station biomining experiment demonstrates rare earth element extraction in microgravity and Mars gravity. Nature Communications (in review).Cockell, Charles. (2020). BioRock rare earth element leaching data, [dataset]. University of Edinburgh. https://doi.org/10.7488/ds/2908
Archaea in Past and Present Geobiochemical Processes and Elemental Cycles
Full text linkFor a long time, Archaea have been considered as an ancient prokaryotic group comprising specialists restricted to narrow ecological niches. This opinion might have been supported by the characteristics of the first well-investigated isolates, being strictly anaerobic (methanogens), halophilic (haloarchaea), or thermophilic (various groups). This is, however, just the tip of the iceberg. Archaea are abundant in all ecosystems. Representatives of the whole domain span the widest range of ecological adaptations from psychrophilic to hyperthermophilic. They tolerate the widest range of pH as well as salt concentrations and use all types of substrates comprising all kinds of organic molecules as well as reduced inorganic compounds
Kerogen-rich shales and coals: Key drivers of microbial life and carbon cycling in the deep biosphere
No full textDNA sequence data of DNA from kerogens after microbial enrichment. These data are for sequences of bacteria inhabiting laboratory microcosms of kerogens inoculated with a lab culture. They are sequences associated with incoulation of four primary kerogen types.DNA sequence FASTA files of microbial communities from the work: Kerogen-rich shales and coals: Key drivers of microbial life and carbon cycling in the deep biospher
Limitations to a microbial iron cycle on Mars
Full text linkAnaerobic microbial metabolisms found on the Earth are the most plausible candidates for understanding potentially analogous energy gathering metabolisms on Mars. The iron-rich nature of Mars raises questions on whether the planet could support energy acquisition by iron-cycling microorganisms. This review paper addresses what is known about the redox couples that support microbial iron cycling on Earth, and evaluates evidence to date of the presence or absence of relevant redox constituents on Mars. We give particular focus to iron reduction. These constituents include the presence and prevalence of ferric iron-bearing minerals that may serve as terminal electron acceptors, and the likelihood of organic compounds (exogenous and endogenous) or hydrogen residing in the near- or sub-surface as a source of electron donors. Whilst it is feasible that redox couples for iron cycling may exist, or have existed in the past, current knowledge suggests that for chemolithotrophs (iron oxidation) Mars may be an electron acceptor limited world and that for chemoorganotrophs (iron reduction) Mars may be limited in widespread, readily available electron donors, particularly in its subsurface. There are several major limitations in this assessment due to lack of experimental data on Earth, and lack of measurements on Mars. We outline a series of high priority in-situ measurements that are necessary to fully evaluate the potential for a Martian biological iron cycle. Our conclusions also apply to the search for a Martian biological sulphur cycle.</p
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