with the sediments of Florida Bay. However, sampling on a one-mile square grid pattern 
has revealed the presence of a sub-marl autochthonous peat over a much larger area 
than previously shown. At one site several miles south of mainland Florida, peat forms 
the entire sedimentary sequence. Eleven cores from the islands and ‘banks' were 
analyzed petrographically, palynologically, and chemically and a limited number of age 
determinations were made. Petrographic and palynological studies of the peats show 
that a terrestrial vegetation occupied a large portion of the Bay in the recent past. 
Basal peat sediments indicate that much of the area involved was covered with 
freshwater marsh and swamp environments with the saline mangrove environment 
which now characterizes the Bay gradually encroaching from the south and west. 
Fresh-water peat types encountered include water lily peat, saw grass-arrowhead 
peat, and buttonbush peat. The environments associated with these peats became 
progressively more saline. Fresh-water peats are overlain by brackish buttonwood 
peat which is, in turn, overlain by saline mangrove peats. In most places the 
transgressive sequence is completed by several feet of marine carbonate mud. The now 
discontinuous occurrences of peat appear to represent remnants of more extensive peat 
layers, some of which may have been continuous with those of mainland Florida. The 
peats display unexpectedly low pyrite concentrations as well as total S contents. 
Evidence suggests that this is the result of the lack of available iron and hence a failure 
to fix the available S in the sulfide form. 
1978 0 
DeBellevue, E., H. T. Odum, J. Browder, and G. Gardner (1978) Energy analysis of the 
Everglades National Park. Rep. T-527. South Florida Research Center, Everglades National 
Park, Homestead, FL. 34 pp. 
[NO COPY OF PAPER AVAILABLE. ABSTRACT FROM SCHMIDT (1991).] This report 
presents the first attempt, using an energy analysis, to show a National Park as an 
integral part of a larger system. The most important components and interactions with 
the model are shown using energy circuit diagrams representing subsystems such as 
mangrove, saltwater, sawgrass, marine meadows, etc. Pathways are evaluated 
numerically using available data and comparative values are given by the energy 
analysis. An analysis of the park fishery based on commercial and recreational catches 
at Flamingo was made using the retail price of fish as their value to the economy. A 
ratio of fossil fuel energy input using coal equivalents was made and related to 
increased water supply on the parks value to the regional system. Results included a 
land use map of park subsystems, an evaluated Everglades National Park model and 
summary diagrams. A floodway, from Lake Okeechobee to Conservation Area III, was 
proposed by the authors to restore natural flow to the park, and to serve agriculture 
and urban development. 
1978 0 
Gilbert, C. R. (ed.) (1978) Rare and endangered biota of Florida. Vol. 4. Fishes. University 
Press of Florida, Gainesville, FL. 58 pp. 
[NO COPY OF PAPER AVAILABLE. ABSTRACT FROM SCHMIDT (1991).] A classification 
and description of Florida's aquatic ecosystems was provided along with definitions of 
status categories and a list of included species of fish. Those 
rare/endangered/threatened species known to occur in the coastal areas of the 
Everglades National Park include key silverside, Menidia conchorum , Rivulus Rivulus 
marmoratus, mangrove mosquitofish Gambusia rhizophorae. 
238 
