laboratory results that demonstrated that glyoxylate is formed photochemically in 
seawater. Pyruvate, in contrast, showed no clear trend with depth; its distribution in 
the water column may be primarily controlled by biological processes rather than by 
photochemical processes. Biological processes are generally thought to control the 
spatial and temporal distribution of simple organic metabolites in seawater. Our results 
show that photochemical processes may also be important in the marine cycling of some 
biochemical compounds. 
1985 
King, C. A. (1987) Organochlorines in bottlenose dolphins, (Tursiops truncatus) and Pygmy 
sperm whales (Kogia breviceps) from southeastern Florida. M. S. Thesis, University of 
Miami, Coral Gables, Fla. 92 pp. 
Organochlorine concentrations in melon tissue from Atlantic bottlenose dolphins 
(Tursiops truncatus) and pygmy sperm whales (Kogia breviceps) were determined to 
test the hypotheses that there are intraspecific differences in concentrations in 
relation to body length and sex, and that there are interspecific differences related to 
distribution and diet. Melon samples from 15 bottlenose dolphins and 18 pygmy sperm 
whales stranded in southeastern Florida were analyzed for chlorinated pesticides and 
PCBs using a modified version of the standard EPA method. One specimen each of these 
two species was found in Florida Bay. These two species were chosen for study because 
of their frequency of stranding, and differences in their distribution and feeding habits. 
PCB (Aroclor 1254), heptachlor epoxide, 4,4'-DDT, and 4,4'-DDE were detected in all 
melon samples; heptachlor, dieldrin, 4,4'-DDD, 2,4'-DDT, 2,4'-DDE, and lindane were 
detected infrequently. In both bottlenose dolphins and pygmy sperm whales, 
concentrations of PCB and chlorinated pesticides were significantly higher in males than 
in females. There was no significant correlation between body length (as a measure of 
age) and organochlorine concentrations Results demonstrated that bottlenose dolphins 
had significantly higher concentrations of chlorinated pesticides and PCB than pygmy 
sperm whales, as predicted by distribution and diet. When compared to levels of PCBs 
and DDT previously reported in odontocetes, concentrations of DDT in pygmy sperm 
whales and bottlenose dolphins in the present study are within the low range of global 
contamination. Concentrations of PCB in pygmy sperm whales are also within the low 
range of global contamination of odontocetes, while bottlenose dolphins, particularly 
males, had concentrations of PCB within the high range. Information from the present 
study can be applied as baseline data in the future monitoring of organochlorine 
concentrations in bottlenose dolphins from southeastern Florida. Continued monitoring is 
suggested since the future management of these dolphins should take into account the 
impact of contamination by organochlorines, especially PCB's. 
1985 0 
Quinn, T. M., and D. F. Merriam (1985) Florida Bay revisited: development of a shallow- 
water carbonate facies mosaic in response to Holocene transgression. Geol. Soc. Amer. 
Abj^, 17:694. 
[ABSTRACT ONLY. DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] A complex 
shallow-water carbonate facies mosaic has developed in Florida Bay in response to the 
Holocene transgression. This complex facies mosaic is incorporated in the sedimentary 
record of most Florida Bay islands and consists, in upward succession, of: (1) a 
freshwater low-Mg calcite mud facies; (2) a transgressive basal peat facies; (3); 
packstone and wackestone facies; (4) an organic-rich skeletal and pelletoidal 
wackestone facies; (5) an intercalated upper peat facies; and (6) a supratidal mudstone 
and wackestone facies. Detailed sediment analyses have revealed that facies 3, 4, and 
5 are absent from portions of numerous Florida Bay islands. Islands whose sedimentary 
records consist of the supratidal mudstone and wackestone facies (6) directly 
297 
