* Station or site mean significantly different from controls (alpha=0.05). 



** Mean response significantly different from controls and 80% or less than control response. 



ns Mean response not significantly different from controls. 



The data from this test indicated several spatial patterns in toxicity among the stations and sites (Fig- 

 ures 13 and 14). Many of the stations and sites in the lower East River, upper East River, and western 

 Long Island Sound were toxic, whereas none were toxic in the adjacent lower Hudson River and only 

 one was toxic in the upper New York Harbor. Second, many of the stations and sites in Arthur Kill, 

 western Raritan Bay, central Raritan Bay, and Sandy Hook Bay were toxic, whereas only one of the 

 stations in adjacent lower New York Harbor and outer bay/New York Bight was toxic. Also, none of 

 the three sites in lower Raritan River was toxic. There was considerable heterogeneity in toxicity 

 within Raritan Bay, but not in the outer bay/New York Bight, where all samples and sites were non- 

 toxic. 



54 



