BIOTIC STREAM RESPONSES TO STREAM REAERATION 



37 



(b) Variety of organisms is inversely proportional to the degree of 

 pollution. 



(c) Scavenger populations may be tremendous in extreme pollution 

 and decrease rapidly with stream recovery. 



(d) The more serious the condition of pollution, the less are the oxygen 

 requirements of the existing biota. 



I ■ . . 1 %wfft 



Fig. 4. Sampling stations, north fork of Flambeau river. 



(e) Biotic responses to stream pollution are superimposed upon the 

 responses to natural stream conditions. 



(f) The value of these criteria is jeopardized by the presence of toxic 

 types of trade wastes. 



With this summary as a brief review, we are ready to examine the 

 sanitary and biotic status of the Flambeau River. 



Procedure and Data 



Sampling stations were selected at various stream intervals as shown 

 in Figure 4, beginning 7.1 miles above Park Falls and extending 39.1 miles 



