EFFECTS OF THERMAL ALTERATION 



575 



TABLE 2 



MEAN DIVERSITY (D), AVERAGE NUMBER OF 



TAXA (T). AND TOTAL NUMBER OF LARGER 



FISH-FOOD ORGANISMS (N) FOR NINE PERIODS 



FOR THE CHANNEL DREDGE SAMPLES* 



*Mean diversity (D) is calculated by averaging station 

 diversities during the period and given ± standard deviation; D's 

 compared with Duncan's new multiple range test are not 

 significantly different (P > 0.05) if underlined by a common line. 



