and disturbance. The mangrove swamps of Florida and Puerto Rico are 

 the main subject, but information from other regions is included. 

 (B.W. and author's introduction) 



Keywords: mangroves, coastal ecosystems, Florida, Puerto Rico 



I-A-6 



University of North Carolina Institute of Marine Sciences. 1974. Shallow 

 salt ponds. Pages 300-314 j_n H.T. Odum, B.J. Copeland, and E.A. McMahan, 

 eds., Coastal ecological systems of the United States, Vol. 2. The 

 Conservation Foundation, Washington, D.C. 



yery shallow marine waters with good tide, wind, and wave circulation 

 develop ecosystems in which bottom vegetation is a major photosynthetic 

 producer such as the eel grass, turtle grass, and algal bottoms. 

 Many small marine estuaries of pond size not regularly flushed by 

 the rivers belong in this category. 



Examples of this type of estuary are given, and data are included 

 for Great Pond, Falmouth, Massachusetts; Nantucket Island, Massachusetts; and 

 Martha's Vineyard, Massachusetts. Information on refraction and 

 transport patterns, topography, sedimentary properties, tidal currents, 

 bottom vegetation, seasonal succession, characteristics of a low 

 salinity salt pond, and photosynthetic production characteristics 

 is presented graphically. (B.W.) 



Keywords: tidal lakes, aquatic ecosystems, eelgrass, turtlegrass, algae, 

 Massachusetts, U.S. coastal regions 



I-A-7 



Phillips, R.C. 1974. Temperate grass flats. Pages 244-299 ^H H.T. Odum, 

 B.J. Copeland, and E.A. McMahan, eds., Coastal ecological systems of 

 the United States, Vol. 2. The Conservation Foundation, Washington, D.C, 



The author presents a summary of the literature on temperate grass 

 flats and a general analysis of the eelgrass ( Zostera marina L.) 

 system, the single most important north temperate seagrass system. 



Sections are included on: geographic distribution, the ecology of 

 eelgrass, seasonal pattern of activity, principal inputs and outputs 

 of energy, principal food chains, characteristic mineral cycles, the 

 economic value of the eelgrass system, disturbances and effects on 

 the system, the interaction of the eelgrass system with developing 

 civilization, and research needs and gaps in knowledge of the system. 



