52 



Table 4-4 



Progressive Effects of Low Dissolved Oxygen Concentrations on 

 Modem Shelf Faunas; from Tyson and Pearson 1991 



Dissolved Oxygen Range (mg-l"') 



Effect on Fauna 



2.8- 1.4 



Avoidance and migration by nekton 

 and some mobile epifauna. 



2.0- 



- 1.4 



1.4- 



■ 1.0 



1.4- 



■0.7 



Behavioral responses to stress by 

 stenoxic benthic fauna. 



Emergence of euryoxic infauna. 



Physical inactivity. Duration or 

 severity of conditions exceeds 

 homeostatic capabilities and 

 mortalities. 



Monitoring Cruise at the Western Long Island Sound Disposal Site, June 1991 



