Ecology of Algae, Protozoa, Fungi and Viruses 39 



(since even marine microbiologists like the objects of their re- 

 searches must live and reproduce, and since their families de- 

 mand a normal life and opportunities). 



REFERENCES 



1. Baas Becking, L. G. M. and Mackay, M.: Biological processes in the 



estuarine environment. VI. The influence of Enteromorpha on its 

 environment. Koniukl. Ned. Akad. Wetenschap. Froc, B5.9: 109-123, 

 1956. 



2. Braarud, T.: The ecology of marine phytoplankton. Eighth International 



Congress Botany, Stockhohn, 178-185, 1956. 



3. Lucas, C. E.: External metaboHtes in the sea. Pap. Mar. Biol. Oceanog. 



Deep-Sea Research, 3 ( suppl. ): 139-148, 1955. 



4. Lucas, C. E.: External metabolites and productivity. Cons. Expl. Mer. 



Rapp. et Froc. Verb., ii4: 155-158, 1958. 



5. Parker, B. C. and Bold, H. C: Biotic relationships between soil algae 



and other microorganisms. Am. J. Botany, 48:185-197, 1961. 



6. Wood, E. J. F.: Diatoms in the Ocean Deeps. Facific Sci., 10:377-381, 



1956. 



