in describing the data. When fit to the data using a least-squares fitting procedure, they 
produced nearly identical lines explaining 90% of the variance in the data. The 
estimates of the P/I model parameters a and P max produced by the four different 
formulations varied widely, however, so parameter values generated using one model 
cannot be used in other models. Green photosynthetic leaves accounted for only 15.0% 
of the total biomass of Florida Bay T. testudinum. The remaining 85% was apportioned 
into below ground short shoots, rhizomes and roots. Leaves had higher respiration 
rates (7.4 fig O 2 g' 1 min' 1 ) than the below ground structures (0.9 to 4.6 |ig O 2 g' 1 
min' 1 ), and accounted for 42.6% of total plant respiration. The P/I curve and 
respiration data were used to build a daily carbon budget for Florida Bay T. testudinum. 
Estimated carbon fixation rates agreed closely with previously collected field 14 C 
uptake measurements. Under average summer light conditions, the budget was positive 
as deep as 4 m, suggesting that plants can survive at this depth. H sat was 0 h at depths 
greater than 3 m, however. 
1991 0 
Lidz, B. H., and E. A. Shinn (1991) Paleoshorelines, reefs, and a rising sea: South Florida, 
USA. J. Coastal Res. . 7(1):203-29. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] The porous limestone bedrock, 
thin sediment cover, and tectonic stability of the Florida Platform during the post 15 ka 
BP provide an exceptionally suitable setting for reconstruction of paleoshorelines and 
onshore projection of future shorelines in a rising-sea scenario. Paleoshorelines for 8, 
6, 4 and 2 ka BP show that: (1) a series of limestone islands formed, then drowned, 
along the outer platform; (2) a distinct trough, called Hawk Channel, separated the 
outer islands from shore; (3) the lower Keys flooded earlier and more rapidly than the 
rest of the Keys; and (4) Florida Bay and tidal passes through the middle Keys into the 
Bay developed within the past 4 ka BP. During the Quaternary, topographic highs were 
preferential sites for coral growth. Bathed by clear oceanic waters, reefs near the 
platform flourished. As sea level rose, reefs developed on the platform margin and 
were gradually displaced to more shoreward bedrock highs. Upon platform flooding, 
water quality deteriorated and reef luxuriance diminished. Projection of future 
shorelines onto land shows that most land forming the Florida Keys would flood in a rise 
of 1 to 2 m and that a rise of little more than 5 m would submerge all land. Offshore 
reefs would die, while nearshore reefs would shift landward as the mainland shoreline 
migrated northward. Onshore topographic highs would become numerous small islands 
as the Keys flooded, until all drowned. The submerged highs would then become 
preferred sites for coral growth, until water quality and depth exceeded the optimum 
for survival. 
1991 0 
Reynolds, J. E., and D. K. Odell (1991) Manatees and Duaonqs . Facts on File, NY. 192 pp. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] This book contains chapters on 
the evolution of manatees and dugongs, and. the species found in Florida, the Antilles, 
West Africa and the Amazon. The chapter on the Florida manatee contains descriptions 
of the anatomy, senses, and behavior of this species in Florida waters. 
1991 0 
Rude, P. D. (1991) On the marine geochemistry of fluorine. Ph. D. Dissertation. State 
University of New York, Stony Brook, NY. 206 pp. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] Dissolved fluoride concentrations 
in marine sediment pore water often differ from those found in overlying seawater. The 
common explanation for these differences has been reactions of F-bearing phosphatic 
phases. Fluoride concentrations during diagenesis could vary due to reactions involving 
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