Some Relationships of Phytoplankton to Environment 

 30 r 



281 



Salinity 7oo 



Fig. 3. Salinity-temperature relations of certain dinoflagellates in the Indian 



and Pacific Oceans. 



species in the two oceans. It is too early yet to diaw definite 

 conclusions, but the work indicates that this method of study 

 ( Figs. 2, 3 ) may be productive of ecological information for many 

 plankton species, and may be useful in delimiting the influence of 

 certain biological water masses. 



An interesting discovery is that of certain antarctic diatom 



