CONTENTS 



Part I. Introduction, hydrology and methods (A.C.H. and E.R G.) page i 



General introduction j 



Geography and hydrology of South Georgia and adjacent areas ... 3 



Methods in the field I7 



Description of cruises undertaken 10 



Laboratory methods and their accuracy 2C 



Part II. The phytoplankton (A.C.H.) 30. 



Introduction 30 



List of phytoplankton species _t 1 



Distribution , 2 



Diatomacea i 2 



Dinoflagellata 62 



Protococcoideae 64 



Chrysomonadineae 64 



Silicoflagellata 64 



Relative importance of different organisms 64 



Comparison of the phytoplankton of different regions 65 



Phytoplankton production in relation to hydrology 76 



Seasonal changes in the phytoplankton 87 



Arctic and Antarctic phytoplankton 87 



Part III. The zooplankton, Section I (E.R. G.) 88 



Introduction 88 



List of zooplankton species 89 



Comparison of the composition of the catches of the different nets . . 92 



Distribution of zooplankton 93 



Protozoa 93 



Coelenterata 103 



Ctenophora 107 



Nemertinea 107 



Chaetognatha 107 



Polychaeta 113 



Crustacea 117 



Ostracoda 117 



Copepoda 119 



Cirripedia 193 



