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<br />. <br /> <br /> , " <br /> % . <br /> Z.IO ~ <br /> Z U ~ <br /> . . . <br /> . . 0 <br /> . . ~ U <br /> 2.00 C . <br /> U . <br /> ~ . z <br /> . <br /> . . . z <br /> . . 0 . <br /> " > . " . u z <br /> 0 . 0 . % ~. <br /> Z . " 0 <br /> . z . ~ ~ o~ <br /> 1.110 ~ . u ~~ <br /> . , . 0 z. <br />','f;j \ . ~ au <br />. ~ z~ <br />. 1.10 o~ <br />0 ~. <br />z -" <br />~ .. <br />> "" <br />, <br />. "" <br />. <br />. <br />> <br />0 .., <br /> I.SO <br /> "" <br /> . ., <br /> .00 <br /> <br /> <br /> <br /> <br />[f"_1 <br /> <br />EF-~ "'''-1 .loA-I <br /> <br />AIl-! AIl-" AII-' ,1,11-6 "".7 AR-8 ,1,11-9 <br /> <br />Figure 20. - Mean diversity indices for aquatic macroinvertebrates at all river stations from April <br />1979 to September' 980. <br /> <br />. <br />. <br />~ <br />> 1200 <br />. <br />. <br />0 1100 COPPER <br />0 <br />. <br />. <br />z .'00 ZINC <br />. <br />0 <br />. <br />. ''''' C40MIUIrIl <br />. <br />~ ."" LEAD z <br />~ ~ <br />., <br />~z 0 <br /> 0 ''''' z 0 <br />> <br />>~ . . <br />. . . <br />. ."" 0 z <br />z> . <br /> . . 2 <br />00 . <br />~ , . <br />'... '00 , . <br />~ ~ > . <br />. . 0 u <br /> . ,; \ <br />~ . <br />. ."" . 0 <br />" \ . <br />0 , <br /> u <br />. >00 ~ <br />Z . <br />0 . <br /> 0 <br />. "0 u <br />. <br />. % <br />, . <br />z <br />. '00 f <br />u <br />z 0 <br />8 z <br />z 0 <br />. , , <br />~ <br />~ ~ ~ ~ . . <br /> . . <br /> STATION <br /> <br /> <br />Figure 21. - The mean heavy metal content of brown trout livers collected at selected stations by <br />electrofishing on October 2. 1979 <br /> <br />32 <br />