370 ZEEMAN AND GRUNEWALD 



TABLE 1 



MANOVA RESULTS FOR PRIMARY PRODUCTIVITY 



MEASUREMENTS, WITH THE RATES OF THREE SIZE 



FRACTIONS AS DEPENDENT VARIABLES 



*Significant at a = 0.05. 



for all three fractions at station KD when a AT was present across 

 the condenser. The difference is more noticeable for the < 10- and 

 > 64-jum fractions. We should note that, on three of the four dates 

 with no AT, only one pump was in operation. (Flow rates were 

 1.086 X 10-^ and 1.56 x 10^ m^/min with one and two pumps 

 operating, respectively.) Thus mechanical effects may play an 

 important role. 



The results of a two-way MANOVA run on data from stations 

 KD and FRB for individual dates, with station and sample as 

 independent variables, are shown in Table 2. On 8 of the 18 dates. 



