1973 0 
Craighead, F. C. (1973) The effects of natural forces on the development and maintenance 
of the Everglades, Florida. Research Reports - National Geographic Society, 1966:49-66. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] The author first visited the 
Florida Everglades in 1917 in connection with a study of Paradise Key made under the 
auspices of the Smithsonian Institution. At that time he visited Lake Okeechobee and 
boated down the Caloosahatchee River to Fort Myers. Although the destruction of native 
vegetation was even then well under way, much was still preserved and made a lasting 
impression that motivated him to return to Homestead on his retirement in 1949. His 
work with the US Department of Agriculture from 1911 to 1949 frequently brought 
him into the forests of the state and increased his interests in its ecological problems. 
Since 1953, he collaborated with the Everglades National Park, and from 1961 the Park 
contributed to the expenses pertaining to these studies. In 1966 a research grant from 
the National Geographic Society allowed him to continue and expand the studies of this 
ecologically critical region. Preliminary studies have shown that natural forces, such 
as the rising sea, recent sedimentation (5,000 yrs or less), hurricanes, changing 
water levels, drought and resulting fires, and even the alligator can have catastrophic 
effects on the life and death of plant communities in south Florida and can profoundly 
affect the wildlife. Several investigators during the past four decades have called 
attention to the worsening conditions in the natural environments of south Florida. The 
present studies have attempted to throw more light on the natural processes of change, 
to point out their intensification by man, and to offer suggestions toward better 
management of this complex environment. 
1973 0 
Roberts, A. A., J. G. Palacas and I. C. Frost (1973) Determination of organic carbon in 
modern carbonate sediments. J. Sed. Petrol. . 43(4): 1157-9. 
[NO COPY OF PAPER AVAILABLE. ABSTRACT FROM SCHMIDT (1991).] In the routine 
analysis for organic carbon in modern unconsolidated sediments the initial step 
commonly is to remove the carbonate carbon by acid treatment and to analyze directly 
the organic carbon in the residue. As much as 44% of the organic carbon in modern 
carbonate sediments from Florida Bay is solubilized and lost during the acid treatment. 
Therefore, the amount of carbon in these, and in similar modern sediments, must also 
be included in the analysis for an accurate determination of the percentage of total 
organic carbon in the sample. 
1973 0 
Jones, J. I., R. E. Ring, M. O. Rinkel, and R. E. Smith (eds.) (1973) A summary of knowledge 
of the eastern Gulf of Mexico. State University System of Florida, Institute of 
Oceanography (SUSIO), Gainesville, FL. 
[NO COPY OF PAPER AVAILABLE. ABSTRACT FROM SCHMIDT (1991).] This report 
represents a compilation and evaluation of selected studies of the significant natural 
and artificial environmental characteristics of the eastern Gulf of Mexico and provides 
an overview of the current status of knowledge and information on past and on-going 
studies which are significant for a more complete understanding of the environment and 
ecology of the area. An extensive geological literature has been developed in this region 
since it is one of the major petroleum producing regions of the world and since a 
number of major commercial fisheries are located in this region there is an extensive 
literature regarding this aspect as well. Some of the more general statements made on 
the major topics addressed in this report are briefly summarized as follows: the 
climate of the report area is characterized by a subtropical high-pressure belt, with 
the period from March to September characterized by a clockwise atmospheric 
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