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中国地质大学科学技术发展院石炜(博士生),李超等 BGEG国家重点实验室 Geology, January 24,2018, Sulfur isotope evidence for transient marine-shelf oxidation during the Ediacaran Shuram Excursion
早期地球；海洋；氧化模式；地球；碳循环；
2021/10/21
近日，中国地质大学生物地质与环境地质国家重点实验室李超教授团队在国际著名地学期刊《Geology》上发表了题为“Sulfur isotope evidence for transient marine-shelf oxidation duringthe Ediacaran Shuram Excursion”的学术论文，该论文通过定量数值模拟的方法首次发现了埃迪卡拉纪碳循环剧烈扰动时期（又称“Shu...
Anaerobic ammonium oxidation (anammox) bacteria and sulfide-dependent denitrifiers coexist in the water column of a meromictic south-alpine lake
Anaerobic ammonium oxidation bacteria sulfide-dependent denitrifiers coexist in the water column a meromictic south-alpine lake
2014/4/2
In addition to organotrophic denitrification, alternative pathways, such as anaerobic ammonium oxidation(anammox) or sulfide-dependent denitrification may be important modes for the removal of fixed n...
Oxygen isotopic fractionation and exchange during bacterial nitrite oxidation
Oxygen isotopic fractionation exchange bacterial nitrite oxidation
2014/4/17
We elucidate the controls on thed18 O values of microbially produced nitrate by tracking thed18O of nitrite and nitrate during bacterial nitrite oxidation, which is the final step of the nitrification...
Oxygen isotopic exchange and fractionation during bacterial ammonia oxidation
fractionation during bacterial ammonia oxidation Oxygen isotopic
2014/4/16
We examined the oxygen isotopic systematics for ammonia oxidation, the first step in the regeneration of
nitrate from ammonium. In particular, oxygen isotopic fractionation and exchange with water we...
Potential carbon fixation via methane oxidation in well-oxygenated riverbed gravels
via methane oxidation well-oxygenated riverbed gravels
2014/4/16
Due to a combination of local methanogenesis and high background concentrations in the groundwater, water
in the River Lambourn is 51 times supersaturated with methane (162 nmol CH4 L21
). Pore-wate...
Phosphorus release with carbonate dissolution coupled to sulfide oxidation in Florida Bay seagrass sediments
Phosphorus release carbonate dissolution
2014/4/17
We hypothesized that CaCO3 dissolution, coupled to sulfide oxidation, is an important mechanism by which
solid-phase inorganic P (iP) becomes available to seagrass in tropical carbonate sediments. To...
Anaerobic ammonium oxidation in deep-sea sediments off the Washington margin
deep-sea sediments off Anaerobic ammonium
2014/4/17
The significance of anaerobic ammonium oxidation (anammox) for nitrogen removal in deep continental
margin sediments was studied with 15N amendments to suboxic sediments collected from 2800–3100-m wa...
Rates and regulation of anaerobic ammonium oxidation and denitrification in the Black Sea
Rates and regulation anaerobic ammonium oxidation denitrification Black Sea
2014/4/18
We performed incubation experiments with 15N-labeled nitrogen compounds to investigate the vertical distribution of pathways of N2 production through the suboxic zone of the central Black Sea and the ...
Anaerobic ammonium oxidation in the Peruvian oxygen minimum zone
Anaerobic ammonium oxidation Peruvian oxygen minimum zone
2014/4/22
We investigated the microbial pathways of nitrogen (N) loss in an April 2005 transect through the Peruvian oxygen minimum zone (OMZ) at 12°S latitude using short anaerobic incubations with 15N-labeled...
Enhanced methane oxidation in an estuarine turbidity maximum
Enhanced methane oxidation estuarine turbidity maximum
2014/4/22
Methane and suspended particulate matter (SPM) concentrations, monitored bimonthly during one hydrological year (2003-2004) along 70 km transects in the tidal regions of the Garonne and Dordogne river...
Anaerobic ammonium oxidation in the oxygen-deficient waters off northern Chile
Anaerobic ammonium oxidation oxygen-deficient waters off northern Chile
2014/5/5
We investigated the pathways of N2 production in the oxygen-deficient water column of the eastern tropical South Pacific off Iquique, Chile, at 20°S, through short anoxic incubations with 15N-labelled...
Photo-oxidation of dissolved organic matter in river water and its effect on trace element speciation
Photo-oxidation dissolved organic matter in river water trace element speciation
2014/5/4
To investigate the effect of photodegradation of fluvial dissolved organic matter (DOM) on dissolved trace element distributions, we performed a 3-week incubation of water from the lower Pearl River (...
Biological CO oxidation in the Sargasso Sea and in Vineyard Sound, Massachusetts
Biological CO oxidation Sargasso Sea Vineyard Sound Massachusetts
2014/5/9
In situ dissolved carbon monoxide (CO) in oligotrophic waters follows a diel cycle varying from 0.3 to 0.5 nmol L-1 before dawn to 2.5 to 3 nmol L-1 in early afternoon, when photo-production of CO exc...
Environmental control on anaerobic oxidation of methane in the gassy sediments of Eckernfo¨rde Bay (German Baltic)
anaerobic oxidation gassy sediments
2014/5/13
We investigated the effect of seasonal environmental changes on the rate and distribution of anaerobic oxidation
of methane (AOM) in Eckernfo¨rde Bay sediments (German Baltic Sea) and identifie...
Pathways of organic carbon oxidation in a deep lacustrine sediment, Lake Michigan
Pathways of organic carbon oxidation deep lacustrine sediment Lake Michigan
2014/5/19
Rates of microbial iron reduction and other pathways of organic carbon (Corg) oxidation were investigated in sediment from a 100-m deep site in Lake Michigan. Total benthic mineralization rates of 6.8...