Results 41 to 50 of about 8,420 (233)

Ancient and Modern Geochemical Signatures in the 13,500-Year Sedimentary Record of Lake Cadagno

open access: yesFrontiers in Earth Science, 2022
Although lake sediments are globally important organic carbon sinks and therefore important habitats for deep microbial life, the deep lacustrine biosphere has thus far been little studied compared to its marine counterpart.
Jasmine S. Berg   +12 more
doaj   +1 more source

Genomes of three bacteriophages from the deep subsurface aquifer

open access: yesData in Brief, 2019
Viral particles have been detected in the underground biosphere where they could be one of the main factors impacting microbial diversity, biogeochemistry and evolution.
Vitaly V. Kadnikov   +5 more
doaj   +1 more source

Accessing the energy-limited and sparsely populated deep biosphere: achievements and ongoing challenges of available technologies

open access: yesProgress in Earth and Planetary Science, 2023
Microbes in marine sediments detected and counted by direct observation of membrane-filtered sediment samples stained with acridine orange. This technique can still be applied to high-biomass (> 105 cells/cm3) sedimentary habitats, such as organic-rich ...
Yuki Morono
doaj   +1 more source

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

New Water Oxidation Mechanism in Photosystem II Resolves Major Experimental Controversies

open access: yesAngewandte Chemie, EarlyView.
In Photosystem II Oxygen Evolving Complex, we discovered the O3‐O6 peroxide at lower energy. Assignment of the O3 ligated by histidine (His337) as a slow exchanging substrate and its coupling with O6 give the O─O bond formation mechanism most consistent with all currently available experimental data. Proposal shows how protein environment can steer the
Yulia Pushkar
wiley   +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

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

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

The deep continental subsurface: the dark biosphere [PDF]

open access: yesInternational Microbiology, 2018
Although information from devoted geomicrobiological drilling studies is limited, it is clear that the results obtained so far call for a systematic exploration of the deep continental subsurface, similar to what has been accomplished in recent years by the Ocean Drilling Initiatives.
Escudero, Cristina   +2 more
openaire   +3 more sources

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed‐in tariffs for renewable energy sources (RE) from wind, solar, and biogas. Empirical studies suggest that the policy was creating windfall effects for landowners and attribute farmland use ...
Lars Isenhardt   +6 more
wiley   +1 more source

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