55 



Table 4. Correlation coefficients for diatom variables, which are 

 based on proportions, sedimentary concentrations and 

 annual accumulation rates of periphyton and plankton, 

 with water quality, macrophyte and morphometric 

 variables. Keys Pond was removed from periphyton 

 concentration data because of an anomalously high diatom 

 concentration value (see Fig. 5). * = p < 0.05. 







correlation 



coefficient 











prob. > 1 r 1 



under Ho: rho = 











sample size 

















log 



log 



log 





PERI- 



PLNK- 



PERl- 



PLNK- 



PERI- 



PLNK- 





PROP 



PROP 



CONC 



CONC 



ACCM 



ACCM 



logio 



*-0.610 



*0.613 



*0.410 



*0.644 



0.377 



*0.630 



total P 



<0.001 



<0.001 



0.030 



<0.001 



0.053 



<0.001 





29 



29 



28 



29 



27 



27 





*-0.566 



*0.573 



*0.507 



*0.656 



0.347 



*0.578 



TSI(AVG) 



0.001 



0.001 



0.006 



<0.001 



0.076 



0.002 





29 



29 



28 



29 



27 



27 





*-0.404 



*0.402 



0.309 



*0.492 



0.300 



*0.517 



pH 



0.030 



0.031 



0.109 



0.007 



0.130 



0.006 





29 



29 



28 



29 



27 



27 



Specific 



-0.223 



0.215 



0.204 



*0.387 



*0.392 



*0.480 



conductance 0.244 



0.262 



0.298 



0.038 



0.041 



0.011 





29 



29 



28 



29 



27 



27 



Percent- 



*0.445 



*-0.438 



-0.220 



-0.353 



-0.180 



-0.280 



area 



0.038 



0.042 



0.339 



0.107 



0.422 



0.206 



coverage 



22 



22 



21 



22 



22 



22 



Percent- 



0.258 



-0.243 



-0.105 



-0.186 



-0.280 



-0.203 



volume 



0.176 



0.204 



0.596 



0.333 



0.158 



0.311 



infestation 



29 



29 



28 



29 



27 



27 



