"In March, a month of heavy rainfall, 

 a drastic increase in phosphorus content 

 was noted in all areas except at stations 

 located 20-40 miles offshore. In April 

 and May, the precipitation continued to 

 be heavy and in May a nominal increase 

 of phosphorus content in the areas 20 to 

 40 miles offshore was observed. . , ." 

 [p. 82.] 



DRAGOVICH, ALEXANDER. 



1960a. Copper in Tampa Bay and adjacent 

 neritic and river waters, ij Galveston 

 Biological Laboratory fishery research 

 for the year ending June 30, 1960, 

 p. 65. U.S. Fish Wildl. Serv., Circ. 92. 



Information in this progress report 

 published in Dragovich and May (1963). 



DRAGOVICH, ALEXANDER. 



1960b. Hydrology of Tampa Bay and adjacent 

 waters. In Galveston Biological Labora- 

 tory fishery research for the year end- 

 ing June 30, 1960, p. 48-51. U.S. Fish 

 Wildl. Serv., Circ. 92. 



"Connparison of the water tempera- 

 tures with incidence of G. breve indi- 

 cates that a relation to temperature may 

 exist, especially during the cold periods. 

 During the winter [59-60] the tennpera- 

 ture of water 20-40 miles offshore was 

 higher than that of inshore waters. This 

 may be important in the survival of G. 

 breve offshore. . . ." [p. 48.] 



It was suggested that "the size of a 

 G. breve population may be important 

 for its survival in Tampa Bay during 

 the onset of a rainy season when a 

 drastic reduction of salinity occurs," 

 [p. 49.] 



It was also suggested that it is pos- 

 sible for surface waters with a slightly 

 reduced salinity to exist at 30 to 40 

 miles offshore. 



The author said that the greatest 

 amount of phosphorus is brought into 

 Tampa Bay by the Alafia River, and the 

 greatest proportion of phosphorus is 

 introduced at the beginning of the rainy 

 season. 



"... No relationship was observed 

 between the incidence of G. breve and 

 nitrate-nitrites." [p. 51.] 



DRAGOVICH, ALEXANDER. 



1961. Relative abundance of plankton off 

 Naples, Florida, and associated hydro- 

 graphic data, 1956-57. U.S. Fish Wildl. 

 Serv., Spec. Sci. Rep. Fish. 372, 

 iii + 41 p. 



Original data from Naples, Fla., for 

 the period March 1956 through August 

 1957. 



DRAGOVICH, ALEXANDER. 



1963. Hydrology and plankton of coastal 

 waters at Naples, Florida. Quart. J. 

 Fla. Acad. Sci. 26(l):22-47. 



In this report on plankton at Naples 

 from March 1956 to August 1957 the 

 following observations on occurrence 

 of Gymnodinium breve in certain tem- 

 perature and salinity ranges are of 

 interest: 



Temperature ranges ('''C.) 



17.0-23.5 23.6-28.4 28.5-31.9 



120 



125 



Total 



numbers 



of samples 126 



Samples 



with G. 



breve 3 9 5 



Salinity ranges (p.p.t.) 



32.4-36.0 36.1-36.9 37.0-38.6 



Total 



numbers 



of samples 126 121 115 



Samples 



writh G. 



breve 9 4 1 



DRAGOVICH, ALEXANDER, JOHN H. FINU- 

 CANE, and BILLIE Z. MAY. 

 1961. Counts of red tide organisms, Gymno- 

 dinium breve , and associated oceano- 

 graphic data from Florida west coast, 

 1957-59. U.S. Fish Wildl. Serv., Spec. 

 Sci. Rep. Fish. 369, iii + 175 p. 



This report continues the presenta- 

 tion of original data (see Finucane and 

 Dragovich, 1959) on red tide and asso- 

 ciated ecological conditions. It covers 

 the period from July 1957 through 

 December 1959 and the area from 

 Anclote Keys to Cape Sable. 



DRAGOVICH, ALEXANDER, JOHN H. FINU- 

 CANE, JOHN A. KELLY, JR., and BILLIE 

 Z. MAY. 

 1963. Counts of red-tide organisms, 

 Gymnodinium breve , and associated 

 oceanographic data from Florida west 

 coast, 1960-61. U.S. Fish Wildl, Serv., 

 Spec. Sci. Rep. Fish. 455, iii + 40 p. 



This paper continues the presentation 

 of original data on red tide and asso- 

 ciated oceanographic data from the west 

 coast of Florida (see Finucane and 

 Dragovich, 1959, and Dragovich, Finu- 

 cane, and May, 1961). This report, how- 

 ever, includes observations on am- 

 monia, total and inorganic nitrogen, 

 silicon, calcium, and alkalinity. 



30 



