Contributions of Carbonates to Carbon Dioxide Release From a Calcareous Soil in Response to Experimental Warming

Soil Science ◽  
2019 ◽  
Vol 184 (2) ◽  
pp. 52-59
Author(s):  
Chunhua Zhang ◽  
Yongyu Sun ◽  
Guoyong Tang ◽  
Fanyan Liu
Keyword(s):  
Carbon Dioxide ◽  
Calcareous Soil ◽  
Experimental Warming ◽  
Carbon Dioxide Release

Microbial efficiency in a meromictic reservoir

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Grażyna Mazurkiewicz-Boroń ◽  
Teresa Bednarz ◽  
Elżbieta Wilk-Woźniak
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Consumption ◽  
Release Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Metabolic Efficiency ◽  
Sulphur Compounds ◽  
Carbon Dioxide Release ◽  
Microbial Efficiency ◽  
Ion Contents

Microbial efficiency in a meromictic reservoirIndices of microbial efficiency (expressed as oxygen consumption and carbon dioxide release) were determined in the water column of the meromictic Piaseczno Reservoir (in an opencast sulphur mine), which is rich in sulphur compounds. Phytoplankton abundances were low in both the mixolimnion (up to 15 m depth) and monimolimnion (below 15 m depth). In summer and winter, carbon dioxide release was 3-fold and 5-fold higher, respectively, in the monimolimnion than in the mixolimnion. Laboratory enrichments of the sulphur substrate of the water resulted in a decrease in oxygen consumption rate of by about 42% in mixolimnion samples, and in the carbon dioxide release rate by about 69% in monimolimnion samples. Water temperature, pH and bivalent ion contents were of major importance in shaping the microbial metabolic efficiency in the mixolimnion, whilst in the monimolimnion these relationships were not evident.

Abrupt CO2 release to the atmosphere under glacial and early interglacial climate conditions

Science ◽  
2020 ◽  
Vol 369 (6506) ◽  
pp. 1000-1005
Author(s):  
C. Nehrbass-Ahles ◽  
J. Shin ◽  
J. Schmitt ◽  
B. Bereiter ◽  
F. Joos ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Intertropical Convergence Zone ◽  
Meridional Overturning Circulation ◽  
Before Present ◽  
Freshwater Input ◽  
Warm Climate ◽  
Climate Conditions ◽  
Carbon Dioxide Release ◽  
Meridional Overturning ◽  
Co2 Release

Pulse-like carbon dioxide release to the atmosphere on centennial time scales has only been identified for the most recent glacial and deglacial periods and is thought to be absent during warmer climate conditions. Here, we present a high-resolution carbon dioxide record from 330,000 to 450,000 years before present, revealing pronounced carbon dioxide jumps (CDJ) under cold and warm climate conditions. CDJ come in two varieties that we attribute to invigoration or weakening of the Atlantic meridional overturning circulation (AMOC) and associated northward and southward shifts of the intertropical convergence zone, respectively. We find that CDJ are pervasive features of the carbon cycle that can occur during interglacial climate conditions if land ice masses are sufficiently extended to be able to disturb the AMOC by freshwater input.

scholarly journals Real‐time monitoring of carbon dioxide emissions from a shallow carbon dioxide release experiment

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Hyun‐Jun Kim ◽  
Seung Hyun Han ◽  
Seongjun Kim ◽  
Daegeun Ko ◽  
Seong‐Taek Yun ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Real Time ◽  
Carbon Dioxide Emissions ◽  
Real Time Monitoring ◽  
Release Experiment ◽  
Carbon Dioxide Release

Inhibition of yeast respiration and fermentation by benomyl, carbendazim, isocyanates, and other fungicidal chemicals

1987 ◽  
Vol 33 (2) ◽  
pp. 157-161 ◽  
Author(s):  
Mikio Chiba ◽  
Alan W. Bown ◽  
David Danic
Keyword(s):  
Carbon Dioxide ◽  
Parent Compound ◽  
Oxygen Electrode ◽  
Breakdown Product ◽  
Carbon Dioxide Release ◽  
Saccharomyces Cerevesiae ◽  
Manometric Determination

The inhibition of yeast (Saccharomyces cerevesiae) metabolism by fungicidal chemicals was investigated. Glucose- or ethanol-dependent yeast respiration was measured with an oxygen electrode, and manometric determination of carbon dioxide release was used to measure fermentation. Both respiration and fermentation were inhibited more by benomyl than by identical molar concentrations of its breakdown product, carbendazim. Butyl isocyanate, another benomyl breakdown product, inhibited respiration more but inhibited fermentation less than the parent compound. Of the isocyanates tested, hexyl isocyanate was the most inhibitory towards both activities. Captan was more active and iprodione less active than benomyl. Because benomyl rapidly broke down to carbendazim when it was prepared in 80% ethanol, only 59% of the dissolved benomyl was intact when it was added to yeast to determine its effect on respiration or fermentation.

Monitoring effects of a controlled subsurface carbon dioxide release on vegetation using a hyperspectral imager

2009 ◽  
Vol 3 (5) ◽  
pp. 626-632 ◽  
Author(s):  
Charlie J. Keith ◽  
Kevin S. Repasky ◽  
Rick L. Lawrence ◽  
Steven C. Jay ◽  
John L. Carlsten
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Release
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