Results 41 to 50 of about 81,545 (276)

Deglacial carbon cycle changes observed in a compilation of 127 benthic δ13C time series (20–6 ka) [PDF]

open access: yesClimate of the Past, 2018
We present a compilation of 127 time series δ13C records from Cibicides wuellerstorfi spanning the last deglaciation (20–6 ka) which is well-suited for reconstructing large-scale carbon cycle changes, especially for comparison with isotope ...
C. D. Peterson   +2 more
doaj   +1 more source

Microbial communities in dark oligotrophic volcanic ice cave ecosystems of Mt. Erebus, Antarctica. [PDF]

open access: yes, 2015
The Earth's crust hosts a subsurface, dark, and oligotrophic biosphere that is poorly understood in terms of the energy supporting its biomass production and impact on food webs at the Earth's surface.
Anitori, Roberto P   +5 more
core   +2 more sources

Cultural Values of Landscapes in the Practical Work of Biosphere Reserves

open access: yesLand, 2023
The purpose of this paper is to investigate the role of the landscape’s cultural values in the practical work of biosphere reserves and to identify what opportunities there are to increase awareness and knowledge about these values.
Ingegärd Eliasson   +4 more
doaj   +1 more source

Global hydrogen reservoirs in basement and basins [PDF]

open access: yes, 2017
The authors are grateful to the Science and Technology Facilities Council (STFC) for funding, through Grant NE/G00322X/1. Samples were kindly contributed by K. Condie, M.J. Hole, and D. Muirhead.
Blamey, Nigel, Parnell, John
core   +1 more source

Evidence for Seismogenic Hydrogen Gas, a Potential Microbial Energy Source on Earth and Mars [PDF]

open access: yes, 2016
M thanks the STFC for a PhD studentship and the NASA Astrobiology Institute for additional funding (NNAI13AA90A; Foundations of Complex Life, Evolution, Preservation and Detection on Earth and Beyond).
Blamey, Nigel J F   +2 more
core   +1 more source

Enrichment of rare methanogenic Archaea shows their important ecological role in natural high-CO2 terrestrial subsurface environments

open access: yesFrontiers in Microbiology, 2023
IntroductionLong-term stability of underground CO2 storage is partially affected by microbial activity but our knowledge of these effects is limited, mainly due to a lack of sites. A consistently high flux of mantle-derived CO2 makes the Eger Rift in the
Zeyu Jia   +8 more
doaj   +1 more source

New perspectives in benthic deep-sea microbial ecology

open access: yesFrontiers in Marine Science, 2015
Deep-sea ecosystems represent the largest and most remote biome of the biosphere. They play a fundamental role in global biogeochemical cycles and their functions allow existence of life on our planet. In the last 20 years enormous progress has been made
Cinzia eCorinaldesi
doaj   +1 more source

Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 247-262., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival   +3 more
wiley  

+10 more sources

Sources and Fluxes of Organic Carbon and Energy to Microorganisms in Global Marine Sediments

open access: yesFrontiers in Microbiology, 2022
Marine sediments comprise one of the largest microbial habitats and organic carbon sinks on the planet. However, it is unclear how variations in sediment physicochemical properties impact microorganisms on a global scale.
James A. Bradley   +6 more
doaj   +1 more source

Rapid changes in ice core gas records Part 2: Understanding the rapid rise in atmospheric CO2 at the onset of the Bølling/Allerød [PDF]

open access: yes, 2010
During the last glacial/interglacial transition the Earth's climate underwent rapid changes around 14.6 kyr ago. Temperature proxies from ice cores revealed the onset of the Bølling/Allerød (B/A) warm period in the north and the start of the Antarctic ...
Buiron, D.   +4 more
core   +2 more sources

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