46 



1 JOHN VLASTELICIA 



2 BI OLOGICAL STUDIES 



3 To relate the findings of the oceanographic 



4 studies to the Project's general objectives, a number of 



5 biological studies were conducted. These biological 



6 studies demonstrated that sulfite waste liquor, sludge deposijts, 



7 and the resulting conditions of degraded water quality 

 g are harmful to marine life. The damages observed varied 

 9 from the rapid kill of juvenile salmon in the zone of 



acute pollution to the relatively subtle but equally 



10 



12 

 13 



15 

 16 

 17 



11 damaging effects on oysters reared in the zone of chronic 



pollution. The biological studies were designed to 

 either measure the reaction of the test organisms to pulp 



14 wastes and water quality parameters through field and 



laboratory bioassay techniques or to determine changes 

 in biologic population characteristics related to waste 

 levels and distance from the waste source. 



18 JUVENILE SALMON STUDIES 



19 One of the most significant biologicax 



20 studies conducted waa that involving juvenile salmon. 



21 The anadromous fishery of Puget Sound includes the chinook, 



22 the silver, the sockeye, pink, and chum species of salmon 



23 and the steelhead, sea-run cutthroat and dolly varden 



24 species of trout. After spending most of their adult 



25 life in saltwater, these fish return to the tributaries 



