31. ELEUTERIUS, L.N. , "The Seagrasses of Mississippi," Journal of the 

 Mississippi Academy of Saienae, Vol., 22, 1977, pp. 57-79. 



Biological features of the local species of seagrass, including produc- 

 tivity and decompositional aspects, are reviewed. New information is 

 presented on the reproductive biology, productivity, culture, and salinity 

 tolerance with notes on the local distribution of seagrasses. Thalassia 

 testudinum (turtlegrass) has been studied in more detail than Halodule 

 heaudettei (shoalgrass) , Cymodoaea filiformis (manateegrass), or Ealophila 

 engetmanii. Most research on T. testudinum has been on morphology, produc- 

 tivity, and decomposition. Major factors affecting the distribution are also 

 explored. 



32. ELEUTERIUS, L.N. , and MILLER, G.J., "Observations on Seagrasses and 

 Seaweeds in Mississippi Sound Since Hurricane Camille," Journal of the 

 Mississippi Academy of Science, Vol. 21, 1976, pp. 58-63. 



33. FERNALD, M.L., and WIEGAND, K.M., "The Genus Ruppia in Eastern North 

 America," Rhodora, Vol. 16, No. 187, July 1914, pp. 119-127. 



This study shows that in North America there are several clearly definable 

 variants or a combination of variable characteristics in Ruppia maritima. 

 Whether these should be regarded as different species is questionable. 



34. FRY, B., and PARKER, P.L., "Animal Diet in Texas Seagrass Meadows: 6 ^^C 

 Evidence for the Importance of Benthic Plants," Estuarine and Coastal 

 Marine Science, Vol. 8, No. 6, June 1979, pp. 499-509. 



More than 340 animals from Texas estuarine and offshore seagrass beds were 

 analyzed for their stable carbon isotope ratios (6^^ values). Fish and 

 shrimp from seagrass beds had significantly more C by an average of 3.3 to 

 5.1 parts per thousand than comparable animals collected offshore. One poly- 

 chaete worm species, Diopatra auprea, collected in seagrass meadows were as 

 much as 8.3 parts per thousand enriched in C compared to specimens from 

 areas where phytoplankton were the major primary producers. The differences 

 in 6-^^C values are attributed to differences in diet. The data support the 

 hypothesis that seagrasses and other benthic plants in Texas bays are signifi- 

 cant sources of nutrition for juvenile shrimp and fish. 



35. FRY, B., SCALAN, R.S., and PARKER, P.L., "Stable Carbon Isotope Evidence 

 for Two Sources of Organic Matter in Coastal Sediments: Seagrasses and 

 Plankton," Geoahimica et Cosmoahimica Acta, Vol. 41, Pergamon Press, Inc., 

 New York, 1977, pp. 1875-1877. 



Organic carbon from sediments collected in Texas seagrass meadows was rich 

 in a stable isotope of carbon (^^C) by an average of 6.6 parts per thousand 

 relative to organic carbon from offshore sediments. Within the south Texas 

 bay system, delta ^^c values became increasingly more typical of offshore 

 sediments with increasing distance from seagrass meadows. This permits the 

 use of carbon isotope data as a measure of the relative contributions of sea- 

 grasses and plankton to sedimentary organic matter. 



36. FUSS, CM., and KELLY, J. A., "Survival and Growth of Seagrasses Trans- 

 planted Under Artificial Conditions, Bulletin of Marine Science, Vol. 19, 

 No. 2, Apr. 1969, pp. 351-365. 



Survival and growth of turtlegrass {Thalassia testudinum) and shoalgrass 

 (Diplanthera wrightii) transplanted in aquariums and through-flow seawater 



15 



