wind speeds > 5 m s' 1 . When the low-level wind blows parallel to the peninsula, sea- 
breeze circulation is strong and area rainfall is greater than average. When the wind 
blows across the peninsula, the sea breeze is absent or weak and rainfall is below 
average. This report is based on data from the Key West, Miami, Tampa and Cape 
Kennedy weather stations recorded from 1973 - 1976 and satellite data for the same 
time period. 
1974 0 
Heald, E. J., W. E. Odum, and D. C. Tabb (1974) Mangroves in the estuarine food chain. 
Environments of South Florida: Present and Past. Memoir 2. P. J. Gleason (ed.). Miami 
Geological Society, Coral Gables, FL. 182-91. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] Discussion centers around the 
seemingly different roles of red and black mangroves in estuarine food chains. Red 
mangroves, the majority of which are intertidal or riverine, produce large quantities 
of detrital material upon which is based a good chain from microorganisms to top 
carnivores of sport and commercial value. Many black mangrove communities, by 
virtue of their location, are probably not significant exporters of detritus to adjacent 
estuaries. Their importance lies apparently in the mosquito killifish food chain 
culminating in the same top level carnivores as the red mangrove-based system. 
1987 0 
Moffler, M. D., and M. J. Durako (1987) Reproductive biology of the tropical-subtropical 
seagrasses of the southeastern United States. Fla. Mar. Res. Publ. . 42:77-88 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] Studies of reproductive biology in 
seagrasses of the southeastern United States have addressed descriptive morphology 
and anatomy, reproductive physiology, seed occurrence, and germination. Halodule 
wrightii Aschers., Halophila engelmannii Aschers., Syringodium filiforme Kutz., and 
Thalassia testudinum Banks ex Konig are dioecious; Halophila decipiens Ostenfeld and 
Ruppia maritima L. are monoecious. In Halop johnsonii Eiseman, only female flowers are 
known. With the exception of R. maritima, which has hydroanemophilous pollination, 
these species have hydrophilous pollination. Recent reproductive-ecology studies 
suggest that reproductive patterns are due to phenoplastic responses and/or genetic 
adaptation physico-chemical environmental conditions. Laboratory and field 
investigations indicate that reproductive periodicity is temperature controlled, but 
proposed mechanisms are disputed. Water temperature appears to influence floral 
development and may be important in determining subsequent flower densities and 
fruit/seed production. Flowering under continuous light in vitro, suggests that 
photoperiod plays a limited role in floral induction. Flower expression and anthesis, 
however, may be influenced by photoperiod. Floral morphoontogenetic studies of T. 
testudinum field populations demonstrated the presence of early-stage inflorescence 
during short- and long-day photoperiods, further suggesting day neutrality in this 
species. High initial reproductive efforts, annual variation in male sex expression, 
secondary sex characters, and possible interaction of ramet age with sex expression 
have also been detected. 
1993 0 
Rood, B. E., J. Delfino, J. Gottgens, C. Earle, T. Crisman, L. Garcia, and N. Ushakoff (1993) 
Increased mercury accumulation rates in Florida Everglades sediment. American Chemical 
Soc., Natl. Mtg., Denver, CO. Abs., ACS, 205(1-2):ENVR32. 
[ABSTRACT ONLY, DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] This study of 
Hg in Everglades sediment was initiated after elevated fish Hg levels were identified 
from this region. The goal of this study was to determine: (1) baseline historic Hg 
concentrations, (2) chronological changes in Hg accumulation rates, and (3) spatial 
374 
