TABLE 5 
ARSENATE 
_ SPECIES _ uG »L ~1 
ISOCHRYSIS GALBANA 2 
RHIZOSOLENIA FRAGILISSIMA 2.5 
SKELETONEMA COSTATUM 5 
AMPHIDINIUM CARTERAE 10 
CHAETOCHEROS PSEUDOCRINITUM 20 
THALASSIOSIRA PSEUDONANA >100 
TETRASELMIS CONTRACTA >100 
SENSITIVITY OF DIFFERENT SPECIES OF PHYTOPLANKTON TO 
ARSENATE. ARSENATE CONCENTRATIONS SHOWN ARE THOSE 
NECESSARY TO CAUSE A 50% REDUCTION IN GROWTH RATE. 
57 
