CONTENTS 



Page 



Introduction 1 



Sampling methods and laboratory techniques 1 



Distribution of Gymnodinium breve 3 



Geographic distribution 3 



Monthly occurrence 3 



Vertical distribution 3 



Environmental factors 8 



Temperature 8 



Precipitation 8 



Salinity 8 



Relation of temperature to occurrence of Gymnodinium breve 13 



Relation of salinity to occurrence of Gymnodinium breve 14 



The role of land nutrients and precipitation in the distribution of 



Gymnodinium breve 14 



Comparison of distribution of Gymnodinium breve in 1964-65 with that 



previously reported 14 



Literature cited 15 



