1.8 

 m 1.6 

 § 1.4 



CO 



X 



1.2 



!: 1.0 



0.8 



E 



o 

 in 



o< 



FATHEAD MINNOWS 

 RAINBOW TROUT 



« 



I L 



J I I L 



1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 

 DISSOLVED OXYGEN, mg/l 



Figure 4. Effect of dissolved oxygen on the acute toxicity of ammonia to 



fathead minnows and rainbow trout. 



128 



