100 



I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 

 1995 1996 1997 1998 



1999 



Figure 4-8: Percent of dissolved inorganic nitrogen contributed by ammonium at all water column stations 

 (except Station 62) for each sampling date. 



I I I I I I I I I I I I I I I I I I I I I 

 1 998 1 999 



Figure 4-9: Phosphate concentrations at all water column stations (except Station 62) for each sampling date. 



Chapter Four ♦ 4-11 



