RICE, THEODORE R. 



1954. Biotic influences affecting population 

 growth of plamktonic algae. Fish Wildl. 

 Serv., Fish. Bull. 54:ii+p. 227-245. 



"It is concluded that antagonistic sub- 

 stctnces arising fronn the metabolism 

 of phytoplankton are important, at least 

 in fresh-water ponds, in influencing the 

 seasonal fluctuations in total phyto- 

 plankton numbers and in the numbers 

 of each species, as well as in causing 

 a definite succession of species." [p. 

 244.] 



ROBINSON, REX J., and THOMAS G. THOMP- 

 SON. 

 1948. The determination of phosphates in 

 sea water. J. Mar. Res. 7(1):33-41. 



The authors stated, "If the samples 

 of sea water contain much plankton 

 this should be rennoved by filtration 

 or centrifugalization. However, it is 

 only in extreme cases when such a 

 procedure is necessary." [p. 38.] Not 

 discussed are errors in phosphorus 

 determinations from particulate phos- 

 phorus in unfiltered samples. 



ROTBERG, M. 



1958. The thiannine requirements of 

 Prymnesium parviim (Chrysomonadina). 

 Bull. Res. Counc. Israel 7B:208-210. 



ROUNSEFELL, GEORGE A. 



1958. Large-scale experimental control of 

 red tide. In Annual report of the Gulf 

 Fishery Investigations for the year end- 

 ing June 30, 1958, U.S. Fish Wildl. Serv., 

 p. 76-77. 



Information herein published by 

 Rounsefell and Evans (1958). 



ROUNSEFELL, GEORGE A., and JOHN E. 

 EVANS. 

 1958. Large-scale experinnental test of cop- 

 per sulfate as a control for the Florida 

 red tide. U.S. Fish Wildl. Serv., Spec. 

 Sci. Rep. Fish. 270, vi + 57 p. 



Gives results of the first large-scale 

 attempt to control overblooming of the 

 red-tide organism, Gymnodinium breve . 

 ". . . About 16 square miles stretching 

 along 32 miles of shoreline from Anclote 

 Key to Pass-a-Grille Beach, off St. 

 Petersburg, Florida, were dusted with 

 copper sulfate (CUSO4.5 H2O) at about 

 20 pounds to the acre by crop -dusting 

 planes. . . ." [p. iii,] 



In March 1958, after the completion 

 of the manuscript of this report, a 

 selected panel of 14 biologists versed 



in this field of research were invited 

 by the Director of the Bureau of Com- 

 mercial Fisheries to a symposium on 

 red tide held at Galveston, Tex. It was 

 the concensus of this group, after ma- 

 ture consideration of the copper sulfate 

 experiment, that the combination of 

 excessive cost, short duration of con- 

 trol, and possibility of harnn to other 

 marine life renders application of the 

 method inadvisable. 



RYTHER, JOHN H. 



1955. Ecology of autotrophic marine dino- 

 flagellates with reference to red water 

 conditions. In Frank H. Johnson 

 (editor). The luminescence ofbiological 

 systenns, p. 387-414. Amer. Ass. 

 Advance. Sci., Wash. D.C. 



"The dense populations of dinoflagel- 

 lates which create 'red water' conditions 

 are known only in the tropics or in 

 temperate water during the warnner 

 (and usually the warmest) time of the 

 year. . . . 



"Such fragmentary physiological evi- 

 dence as is available concerning the 

 temperature relations of dinoflagellates 

 appears to support the view that they 

 are predominantly a warm- water group. 

 Barker (1935), who is one of the pioneers 

 in developing successful culture methods 

 for dinoflagellates, observed optimal 

 temperatures for the growth of some 

 14 species between 18° and 25° C. 

 Braarud and Pappas (1951) noted a 

 temperature optimum for Peridinium 

 triquetrum at 18° C, while Nordli ( 1 953) 

 found that Ceratium fusus and C. furca 

 grew most rapidly at temperatures of 

 15° and 20 C respectively. Provasoli 

 (personal communication) finds tem- 

 peratures of 20-25° C most suitable for 

 growing Gyrodinium californicum . . . ." 

 [p. 389-390.] 



The author gave the following table 

 to show preferred salinities: 



"While all the species have salinity 

 optima well below that of full sea water, 

 it is perhaps of even greater significance 

 that they are also able to grow within 



60 



