Table 4. — Surface values of total phosphorus, 1952-66, total nitrogen, 1961-66,' and nitrogen-phosphorus ratio (N/P) ^ for 



areas of Tampa Bay, Fla. — Continued 



1962-53 1964 1965 1966 1957 1968 1959 1960 

 P PPPPPPP 



1963 



1964 



1966 



Area II— Hillsborough Bay— Continued 



May- 41.0 42.7 46.4 . 



June...- - 38.3 23.2 30.7 . 



July.- - --- 77.4 22.7 43.6 . 



August 60.9 29.5 73.9 . 



September 23.9 59.2 23.3 56.7 26.0 60.1, 



October - - 50.5 31.4 49.7 16 9 44.1 , 



November - 75.3 32.6 - 67.4 . 



December - 41.4 16.4 60.7 22.1 47.6. 



69.6 

 90.7 

 96.5 

 73.3 

 71.8 



28.6 

 26.4 

 10.1 

 11.2 

 23.0 

 18.7 

 19.9 

 18.2 



Yearly mean-. 

 N/P-- 



21.3 



66 6 25.9 

 1.0 



53. 4 26. 9 60. 8 



Area III— Tampa Bay: 



January - 22.8 



February - -- - 23.6 - 



March - 28.3 



April --.. 3.5 23.7 



May 22.6 



June 22.7 



July. - - 20.9 



August - - --- 21.1 



September- 9.2 279 60.7 



October 36.7 



November 21.1 34.3 



December- --- - -- 23.5 26.1 



24.5 

 23.0 



24.2 

 26.9 



32.6 

 24.5 

 19.6 

 18.0 



21.0 23.2 



46 8 

 31.3 



37.7 

 40.6 

 42.1 

 29.0 

 33.4 

 42.2 

 48.2 



19.6 

 31.0 

 24.9 

 24.3 

 20.7 

 20.5 

 18.8 

 29.1 

 31.4 

 14.5 



36.6 

 28.5 

 44.1 

 54.0 

 31.4 

 30.0 

 32.1 

 34.0 



37 9 



33.3 



22.6 

 26.0 

 9.6 

 25.2 

 22.0 

 18.4 

 26.0 

 27.0 

 19.0 



33.0 

 69.3 

 37 6 



38.6 10.4 



28.7 . 

 26.0 

 20.7 , 

 28.7 . 

 27.4 . 

 20.0 



80.2 

 1.1 



71.4 

 49.4 

 42.0 

 44.7 



20.2 

 19.1 

 24.6 

 21.0 

 20.6 



26 8 

 31.3 

 58.3 

 76.6 

 37.0 

 46.0 

 44.8 

 50.1 

 56.5 

 61.9 

 61.1 

 46.7 



19.4 



19.7 

 11.4 

 31.7 

 20.8 

 10.1 

 10.7 

 28.6 

 17.5 

 17.9 

 18.1 



Yearly mean.. 

 N/P 



6.4 23.6 36.7 24.1 



37 2 23.4 

 .7 



36. 6 22. C 

 .7 



31.3 



67. 4 21. 1 

 1.1 



48. 8 18. 1 

 1.2 



Area IV — Tampa Bay Entrance; 



January 2.1 



26.9 

 18.1 



February - 13.6 3.9 



March 9.7 8.4 



AprU 4.9 3.9 



May 1.7 3.6 



June - 9.8 4.9 



July 5.4 4.6 



August 4.4 



September 4.2 21.6 15.9 6.4 39.0 



October - - 18.3 9.5 10.6 46.4 



November 12.7 .-- 6.3 36.2 



19.6 

 47.3 

 34.2 



7.7 

 4.7 

 3.9 



5.2 

 6.1 



2.8 



5.7 

 16 2 

 13.4 



33. 3 10. 9 



46.4 

 31.3 

 36.7 

 26.8 

 24.9 

 36.3 

 23.2 



3.0 

 8.6 

 4.5 



7.7 



28.0 14.3 



22.0 

 20.6 

 29.4 

 23.6 

 27.1 

 32.6 

 22.0 

 33.7 

 28.0 



10.6 



8.6 

 7.1 

 8.8 

 9.6 

 10.6 

 14 4 

 11.6 



26.1 . 



21.2 . 

 19.4 . 

 12.8 . 

 28.7 . 



11.7 . 



39.0 . 



23.1 . 



22.8 . 

 17.6 . 

 21.0 . 



32. 7 11. 4 



62. 6 11. 3 



37.9 10.6 



63. 1 5. 6 



December, 



4.0 



3.6 25.3 13.6 34.4 



.0 28.6 7.9 13.7 32.7 5.8 



14.7 

 13.0 

 44.0 

 42.0 

 34.0 

 47.6 

 37.8 

 39.4 

 61.6 

 62.3 

 44.8 

 47.7 



6.2 

 5.6 

 16.2 

 13.7 

 8.6 

 13.9 

 10.4 

 10.3 

 17.4 

 17.3 

 15.0 

 12.0 



Yearly mean. 

 N/P.._ 



14. 6 9. 2 



32. 6 7. S 

 2.6 



32.0 8.6 26 8 9.! 

 1.3 1.3 



21.4 43.8 8.9 



39. 9 12. 2 

 1.5 



Area V — Boca Ciega Bay: 



January -.. 1.4 



February - 4.1 



March 2.2 



April- 2.4 2.2 



May 2.6 



June -- 3.7 



July --- 2.6 



August 2.8 



September.- - -. 3.7 



October 1.5 



November .8 2.3 



December - - 1. 1 



3.9 

 4.4 

 4.1 , 

 5.8 . 

 5.3 



6.4 . 

 7 . 

 5.9 



2.5 . 

 3.1 



67 4 

 39.0 

 30.3 

 43.2 



8.6 

 11.3 



27.6 

 22.8 

 37 2 

 28.7 

 47.4 

 39.4 

 40.7 

 32.8 

 38.6 



3.3 

 3.3 



3.2 

 4.9 

 2.0 



10.6 

 7 8 

 9.7 



14.4 



26.2 

 35.3 



4.0 



36.8 

 29.7 



26.1 

 33.3 

 32.6 

 26.7 



39.4 

 29.0 

 31.8 



4.7 

 11.8 

 13.2 



4.4 

 10.1 

 13.4 

 11.4 



9.0 

 18.1 



4.3 



3.1 



23.3 

 26 7 

 26.4 

 14.7 



42. 1 3. 9 



1.6 



7.9 



61.9 

 42.1 

 56.1 

 42.4 

 38.6 



15.4 

 10.1 

 14.3 

 6.7 

 4.2 



Yearly mean. 

 N/P--- , 



.8 2.4 



42. 5 8. 

 3.0 



32. 6 9. 4 

 1.7 



33.6 9.6 46.4 9.1 



6.7 

 4.4 

 9.1 

 6.0 

 15.1 

 10.2 

 11.2 

 11.4 

 15.3 

 14.2 

 8.9 

 7.6 



45.1 

 2,0 



10.0 



' Oduni. 1953; Hutton et al., 1956; Finucane and Dragovich. 1959. 1966; 

 Dragovich et al., 1961; Saloman et al., 1964; Dragovich et al., 196C; Saloman 

 and Taylor, 1968. 



' To calculate the nitrogen-phosphorus ratio, ^g.at./l. values for nitrogen 

 and phosphorus have been converted to parts per million (p. p.m.) by multi- 

 plying by 0.014 (nitrogen) and 0,031 (phosphorus). 



EFFECTS OF HYDKALLIC DREDGING AXD COASTAL DEVELOPMENT IN BOCA CIEGA BAY, FLA. 



