increased away from the mainland toward the Keys and the Gulf. Trends in the 
free/combined ratios of averaged amino acid concentrations at selected depths indicate 
that free amino acids may be incorporated into soluble polymers in the interval between 
12 and 60 cm. Overall, total amino acid and total carbohydrate concentrations 
decreased progressively with increasing depth in the sediment column. Beta- 
aminoglutaric acid was tentatively identified in 53 out of 62 core segments. Its 
concentration decreased with depth in all cores but one. The amino acid composition of 
organic matter dissolved in pore water and adsorbed to mineral surfaces in carbonate 
sediments differs significantly from the amino acid composition of organic matter in 
non-carbonate sediments. 
1982 0 
Manker, J. P., A. R. Hill, and C. S. Johnston (1982) Toxic metal concentrations and 
distribution in Tavernier and Tarpon Basin - Florida Bay. 59th Ann. Mtg. of the Georgia 
Acad. Science, Columbus, GA, April 23 - 24, 1982. Ga. J. Sci. . 40(1-2):21. 
[ABSTRACT ONLY. DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] Sediment* 
toxic metal distribution studies have been completed in two backwater basins of Florida 
Bay. Although the natural environmental setting for each basin was similar, the 
concentrations of Pb and Zn were found to be greater in the basin adjacent to Tavernier 
Key as compared to Tarpon Basin adjacent to Key Largo. Chromium and Co 
concentrations were not appreciably different in the two basins. Lead concentrations 
ranged from 12 to 150 pig/g and from 10 to 24 ng/g in Tavernier and Tarpon Basin 
respectively. Zinc was found to have a maximum concentration of 38 ^g/g in Tavernier 
Basin and 24 jig/g in Tarpon Basin. The major source of Pb contamination in Tavernier 
Basin is from marine and automotive internal combustion engine emissions. A storm 
sewage drainage system, which drains the major highway in that part of the Florida 
Keys, empties into the basins via a single pipe. Tavernier Basin is also a high use 
marina area. In conjunction with the toxic metal investigation a survey of bottom flora 
and fauna populations was carried out in both basins. No benthic fauna exists in the 
Tavernier basin, and little difference was found in number and variety of plant species 
between basins. 
1982 0 
Odum, W. E., C. C. Mclvor, and T. J. Smith (1982) The ecology of the mangroves of South 
Florida: A community profile. FWS/OBS-81/24. Fish and Wildlife Service, Bureau of Land 
Management, New Orleans, LA. 144 pp. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] This citation is a description of 
the ecology of mangrove communities of South Florida. The subjects covered include 
mangroves, microorganisms, plants other than mangroves, invertebrates, fishes, 
amphibians, reptiles, birds, mammals, economic value of ecosystem, and management. 
No abstract or summary is available. 
1982 0 
Parks, J. M., P. J. Lagas, M. A. Cable, R. D. Becker, S. I. Michelson, C. Lensch, and E. B. 
Evenson (1982) Florida Bay carbonate mud banks: possible additional factor in mode of 
deposition exemplified by Ramshorn Spit. Geol. Soc. Am., Abstr., 14(7):58. 
[NO COPY OF PAPER AVAILABLE. ABSTRACT FROM SCHMIDT (1991).] Holocene 
carbonate mudbanks in Florida Bay have been attributed to the turtle grass, Thalassia 
testudinum, which traps fine sediment on contact with slime coating on its leaves, acts 
as a baffle to promote the deposition of suspended sediment by slowing current flow, 
and prevents sediment erosion with its rhizomes. However, Ramshorn Spit is 
Sediment samples were collected and analyzed in this study. This is not mentioned in the published abstract. Personal 
communication, J. P. Manker, Georgia Southwestern College, Americus, GA. 
268 
