WIEBE ET AL.: RELATION OF VOLUME, WET AND DRY WEIGHTS, AND CARBON 



10. T 



i 



I 



5:! 0.01 



0.001 

 0.01 



01 1. 10. 



DRY WEIGHT (mg/m^) 



i 1 I I M III 



100. 



1^" 



t 



0.1 



S 



K 0.01 i 



0.001 



0.0001 



0.01 



o 



H — I 1 II M i nn 1 — I I I I n il 1 — I I 



0.1 1. 10. 



DRY WEIGHT (mg/m^) 



100. 



10.x 



i 



I 

 I 



0.01 



O001 



0.0001 



0.001 0.01 0.1 



WET WEIGHT (g/m^) 



Figure 5.-Plots of Be et al. (1971) and Be (footnote 5) data used 

 in calculating geometric mean regression lines relating wet 

 weight and displacement volume to dry weight, and 

 displacement volume to wet weight. For symbols, see Table 1. 



Y' ± fgsVVarFor X' + t^^V^airX'. 



Antilogging provides multiplicative limits for the 

 untransformed data. For example, suppose an es- 

 timate of carbon is desired having measured a 

 displacement volume (Y) of 0.1 cc/m^. Using 

 Equation 1 in Table 2 and Expression (6) the 

 following values result: 



Log (upper Upper Log (lower Lower 

 Log (Y) Log (X) X(mg/m') limit) limit limit) limit 

 -1.0 0.557 3.61 0.916 8.25 0.198 1.58 



Thus, the antilogged estimate of carbon is 3.6% of 

 the displacement volume with upper and lower 

 95% limits of 8.3% and 1.6%. 



Comparison of the regressions based upon the 

 data of Be et al. (1971) and Be (footnote 5) with the 



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