Results 101 to 110 of about 363 (122)
Does oligotrophy favor chemoautotrophy over photoautotrophy?
Progress in OceanographyEyal Rahav +2 more
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Dynamics of sigmaCO2 in a surficial sandy marine sediment: the role of chemoautotrophy [PDF]
Aquatic Microbial Ecology, 1997 Net consumption and production of CO2 in the surface layers of a sandy marine sediment were examined with a depth resolution of 1 mm. A transient state diagenetic model fitted to measured porewater profiles of total inorganic carbon (ZCOz) in open incubated sediment plugs revealed 3 distinct zones.
Erik Kristensen
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Studies on the Question of Chemoautotrophy in Chilomonas paramecium
Physiological Zoology, 1950exaly +3 more sources
Chemoautotrophy as a strategy in the ecology of indigenous soil bradyrhizobia
Soil Biology and Biochemistry, 1989Le but de l'etude est de determiner si Bradyrhizobium japonicum vivant dans le sol peut se developper en autotrophie chimique en etant en competition avec d'autres bacteries qui oxydent H 2 . Les populations de B.j. sont detectees et denombrees par immunofluorescence. La croissance chimio-autotrophique de B.j.
S.E. viteri, E.L. schmidt
exaly +2 more sources
Geobiology, 2016
AbstractThe aqueous concentration of lead [Pb(II)] in geochemical environments is controlled by the solubility of Pb‐bearing minerals and their weathering products. In contaminated soils, a common method for in situ stabilization of Pb(II) is the addition of phosphate to convert more redox sensitive sulfide minerals into sparingly soluble pyromorphite [
A B, Walczak +4 more
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AbstractThe aqueous concentration of lead [Pb(II)] in geochemical environments is controlled by the solubility of Pb‐bearing minerals and their weathering products. In contaminated soils, a common method for in situ stabilization of Pb(II) is the addition of phosphate to convert more redox sensitive sulfide minerals into sparingly soluble pyromorphite [
A B, Walczak +4 more
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HAGFISH IN THE NEW ZEALAND FJORDS ARE SUPPORTED BY CHEMOAUTOTROPHY OF FOREST CARBON
Ecology, 2007Forest litter is often considered to be a minor energy source to marine communities due to its refractory nature. Large volumes of forest litter are deposited in the New Zealand fjords, and likely recycled into available energy by microbial activity.
Rebecca J, McLeod, Stephen R, Wing
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Wasserstoffaktivierung und Chemoautotrophie bei Actinomyceten
Archiv f�r Mikrobiologie, 19611. 133 strains of actinomycetes comprising 11 genera were tested for their ability to grow chemolithotrophically; 9 strains were stimulated by hydrogen on an organic medium under reduced partial pressure of O2 (8%). 2. Even after repeated subculturing, a number of strains grew well on mineral medium with H2 as the sole energy source and ...
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Archiv f�r Mikrobiologie, 1968
Fluoroacetate was extremely toxic toThiobacillus neapolitanus strainC, retarding growth even at 10-9m. Inhibition could be relieved by relatively high concentrations of acetate or propionate. Inhibited cultures eventually recovered from inhibition and grew in the presence of fluoroacetate over the concentration range 10-9 to 10-5m.
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Fluoroacetate was extremely toxic toThiobacillus neapolitanus strainC, retarding growth even at 10-9m. Inhibition could be relieved by relatively high concentrations of acetate or propionate. Inhibited cultures eventually recovered from inhibition and grew in the presence of fluoroacetate over the concentration range 10-9 to 10-5m.
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Microbial control of organic carbon in marine sediments: Coupled chemoautotrophy and heterotrophy
Marine Biology, 1980The chemoautotrophic fixation of carbon dioxide is responsible for an appreciable component of the organic matter apparent as a carbon-rick peak at 40 cm sub-bottom in the marine muds of Halifax Harbour, Nova Scotia, Canada. Dissolved oxygen and sulfide profiles show that the 40 cm horizon represents a transitional environment from aerobic to ...
P. E. Kepkay, J. A. Novitsky
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Chemoautotrophy Enhances Iron and Phosphorus Recycling From Sediments at Deep‐Sea Methane Seeps
Global Biogeochemical CyclesAbstractMethane‐rich cold seeps are oases of life in the deep sea, where microbial chemosynthesis of organic matter sustains thriving ecosystems independent of sunlight‐derived energy. Here, we reveal a previously overlooked role of chemoautotrophy at seeps as powerful recyclers of scarce nutrients iron (Fe) and phosphorus (P).
Yuxuan Lin +8 more
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