Quantity of organic matter

In bog formations extensive quantities of organic matter are stored during glacial periods. These processes could be a critical link in the explanation of large climatic changes that have occurred in the past. 

The order Mollisol is distributed throughout the Ohio and Upper Mississippi Valleys. The Mollisol for this study is of the Woodburn Series and was collected from Benton County, Oregon. The soil is typically described as montmorilloni-tic and contains moderate quantities of organic matter. It may be slightly acidic to moderately alkaline. 

From expcilmente made upon numb of the water lately supplied to Liverpool, and which proved itself to be a most eligible subject for examination, from the -quantity of organic matter, hoth animal and vegetal, and nitrates, which it contained, the Editor arrived at very satisfactory conclusions, that the object proposed by the patentee may be completely falfilled. 

Sulfate reduction occurs mainly in sediments, with rates controlled by the quality and quantity of organic matter, S042- availability, bioturbation, abundance of dissolved O2 in overlying waters, rates of sulfide reoxidation, and availability of iron-sulfide minerals. 

The quantity of litter input provides the second critical link between NPP and decomposition because NPP governs the quantity of organic matter inputs to decomposers. When biomes are compared at steady state, heterotrophic respiration (i.e., the carbon released by processing of dead plant material by decomposer organisms and animals) is approximately equal to NPP. In other words, net ecosystem production (NEP), the rate of net carbon sequestration, is approximately zero at steady state, regardless of climate or ecosystem type. This indicates that the quantity and quality of organic matter inputs to soils, as determined by... 

Some typical initial and final experimental weight ratios are listed in Table V for comparison. These values give an indication of the relative quantity of organic matter in each of the shales under investigation, and of the progress of the reaction at 500°C. 

PrecipUaHon processes are only adapted to hard waters, and are de s ed to separate the excess of calcium salt, and at the same time a considerable quantity of organic matter, which is mechanically carried down with the preeijiitate. e method usually followed consists in the addition of lime (in the form of lime-water), in just Bofi cieut ontity to neutralize the excess of carbon dioxide present w the water, llie added lime, together with the calcium salt naturally present in the -water, is then precipitated, except that small portion of calcium carbonate which the water, freed from carbon dioxide, is capable of dissolving. To determine when sufficient lime-water has been added, take a sample from time to time during the addition, and test it with solution of silver nitrate until a brown precipitate is formed. At this point cease the addition of lime-water and mix the limed water with further portions of the haid water, until a sample, treated with silver-nitrate solution, gives a yellowish in place of a brown color. 

The quality and quantity of organic matter inputs interact to drive soil metabolic activity (Zak et ai, 1994). Hence, annual soil... 

Total organic carbon (TOC) The TOC defines the quantity of organic matter, including both bitumen and kerogen, of the source rock at current conditions. 

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