f'. 



■!^%„ ' ■::, 



DIATOMS AS INDICATORS OF HISTORICAL 

 MACROPHYTE BIOMASS IN FLORIDA LAKES 



By 



THOMAS JAMES WHITMORE 



A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL 



OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT 



OF THE REQUIREMENTS FOR THE DEGREE OF 



DOCTOR OF PHILOSOPHY 



UNIVERSITY OF FLORIDA 



1991 



