83. NELSON, W.G. , "A Comparative Study of Amphipods in Seagrasses from Florida 

 to Nova Scotia," Bulletin of Marine Saienaey Vol. 30, No. 1, Jan. 1980, 

 pp. 80-89. 



Amphipods associated with seagrass beds were studied along a latitudinal 

 range from Florida to Nova Scotia. Samples were divided into the Acadian, 

 Virginian, and Caribbean faunal provinces and compared with respect to mean 

 density, number of species, diversity, and evenness of amphipods. No signifi- 

 cant differences in these parameters among the faunal provinces were found. 

 For samples from Zosteva marina sites, density of amphipods decreased with 

 increasing latitude. Samples from Thalassia testudinim sites had signifi- 

 cantly lower values of density, number of species, and evenness than either 

 Eatodule wrightii or Z. marina sites. Significant differences were found 

 between the most northern sites and the most southern sites in the size and 

 relative abundance of epifaunal species (but not infaunal species). These 

 differences may be due to a difference in predation intensity at the two 

 locations. 



84. ODUM, H.T., "Productivity Measurements in Texas Turtle Grass and the 

 Effects of Dredging an Intracoastal Channel," University of Texas Marine 

 Science Institute, Institute of Marine Science, Austin, Vol. 9, 1963, 

 pp. 48-53. 



Benthic chlorophyll a and diurnal oxygen productivity were measured in 

 turtlegrass beds containing Thalassia testudiwn and Diplanthera wrightii in 

 Redish Bay, Texas, before and after the dredging of an intracoastal canal. 

 Moderate values of photosynthesis (2 to 8 grams of oxygen per square meter per 

 day) were observed in the spring of 1959 following a period of shading by tur- 

 bid dredge waters, but exceptionally high values (12 to 38 grams per square 

 meter per day) were recorded the following spring in those areas not smothered 

 with silt. Chlorophyll a in 1959 averaged 0.0338 gram per square meter but 

 increased to 0.68 gram per square meter the following summer. 



85. ODUM, H.T., "Tropical Marine Meadows," Coastal Eeologiaal Ecosystems of 

 the United States, H.T. Odum, B.J. Copeland, and E.A. McMahan, eds.. 

 Vol. 1, Conservation Foundation, Washington, D.C., June 1974, pp. 442-487. 



The biology of tropical marine meadows and underwater grassy vegetation in 

 Florida, Texas, Puerto Rico, and the Bahamas is discussed. 



86. O'GOWER, A.K., and WACASEY, J.W. , "Animal Communities Associated with 

 Thalassia, Diplanthera, and Sand Beds in Biscayne Bay. I. Analysis of 

 Communities in Relation with Water Movements," Bulletin of Marine Saienae , 

 Vol. 17, No. 1, Mar. 1967, pp. 175-210. 



Random samples collected from Diplanthera, Thalassia, and sand beds in the 

 shallow sublittoral zones at Key Biscayne and Virginia Key, Florida, indicated 

 both dissimilarities and similarities between the communities inhabiting these 

 environments. The data on occurrences and densities of species in these com- 

 munities were analyzed, and associations of densities and selected environ- 

 mental factors were determined. 



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