49 



Table 4-3 



Progressive Effects of Low Oxygen on Modern Shelf Faunas; 

 From Tyson and Pearson, 1991 



Dissolved Oxygen Range (mg-1 1 ) Effect on Fauna 



2.8 - 1.4 Avoidance and migration by nekton 



and some mobile epifauna. 



2.0 - 1.4 Behavioral responses to stress by 



stenoxic benthic fauna. 



1.4 - 1.0 Emergence of euryoxic infauna. 



1.4-0.7 Physical inactivity. Duration or 



severity of conditions exceeds 

 homeostatic capabilities and 

 mortalities. 



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



