Element biointermediate

Some biointermediate elements, such as calcium, have residence times longer than the biolimiting elements. In the case of calcium, this element is a major component of... 

If f) is greater than 1, the water mass is supersaturated and calcium carbonate will spontaneously precipitate until the ion concentrations decrease to saturation levels. When Cl is less than 1, the water mass is undersaturated. If calcium carbonate is present, it will spontaneously dissolve imtil the ion product rises to the appropriate saturation value. Although calcium is a biointermediate element, it is present at such high concentrations that PIC formation and dissolution causes its concentration to vary by less... 

Biointermediate element An element whose marine distributions are controlled by both physical and biogeochemical processes. 

CaCOj Precipitation and Dissolution Ca may serve as an example for the application of the Broecker model of a biointermediate element. The warm surface seawater is several times oversaturated with respect to calcite and aragonite. Spontaneous nucleation does not occur under these conditions in the sea (e.g., inhibition by Mg ). 

Table 9.1 contains a summary of recycling efficiencies for a variety of representative elements. The results fall into three groups, which have been termed biolimiting, biointermediate, and biounlimited. The biolimiting elements have 1 and, thus, are almost... 

Table 9.1 Broecker Box Model unlimited Elements. Ratios and Recycling Efficiencies for Representative Biolimiting, Biointermediate, and Bio-... 

Table 15.6 gives a summary of calculations for some examples of biolimiting, biointermediate, and biounlimited elements. For biolimiting elements g is close to unity and/ < 0.1 for biounlimiting elements g must be very small... 

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